You have agreement Gaetan..... i have learned and still learning
Into this forum and because of Hugh Dean.... books reading helped and years building have helped too...but really the fast evolution i had was because this forum.
And each day learning more.... each day i conclude i do not know enougth because appear new things i have never imagined.
The collection of his mails (Hugh) are precious, and there are precious things written there.... secrets, interesting ideas, and explanation how to create amplifiers...how to evaluate...the importance of testing, how the parts selection matters, the research, the audible testings, the comparisons, speakers and the importance, not so enormous as people imagine, of measurements.
regards,
Carlos
Into this forum and because of Hugh Dean.... books reading helped and years building have helped too...but really the fast evolution i had was because this forum.
And each day learning more.... each day i conclude i do not know enougth because appear new things i have never imagined.
The collection of his mails (Hugh) are precious, and there are precious things written there.... secrets, interesting ideas, and explanation how to create amplifiers...how to evaluate...the importance of testing, how the parts selection matters, the research, the audible testings, the comparisons, speakers and the importance, not so enormous as people imagine, of measurements.
regards,
Carlos
When I first subscribed here it was because I had some good general working knowlege of electronics, but not really much experience with amplifiers, yet I had always wanted to build one. One of the first sites I saw was actually Rod Elliot's, and I must say his articles are top class. and must-reads for any beginner with an electronics background.
Likewise I have learned much from the many great designs and designers published here, to which I am all truely grateful.
I am a programmer by trade, and one of the things I actually find offensive is the open source movement. Why ? Well, I understand that there is a place for open source code, and have made use of it myself - but these guys do not understand that there is a place for such things as intellectual property, and demand all code written should be free to everyone. Much that is done with computers now would not have been written if the designer had not been given financial incentive to do so. Everyone has the right to profit from their hard graft!
I'm sure the same applies with electronics. This is why I have absolutely no problem with people like Hugh and Rod who make a living off of DIY kits. NO ONE has the right to demand schematics or anything else for free.
To end this before it turns into a rant, I would like to say a big thanks to all the guys here who have shared their knowlege with everyone and myself. Even if it goes over my head (the maths stuff usually!) I enjoy reading it 🙂
Likewise I have learned much from the many great designs and designers published here, to which I am all truely grateful.
I am a programmer by trade, and one of the things I actually find offensive is the open source movement. Why ? Well, I understand that there is a place for open source code, and have made use of it myself - but these guys do not understand that there is a place for such things as intellectual property, and demand all code written should be free to everyone. Much that is done with computers now would not have been written if the designer had not been given financial incentive to do so. Everyone has the right to profit from their hard graft!
I'm sure the same applies with electronics. This is why I have absolutely no problem with people like Hugh and Rod who make a living off of DIY kits. NO ONE has the right to demand schematics or anything else for free.
To end this before it turns into a rant, I would like to say a big thanks to all the guys here who have shared their knowlege with everyone and myself. Even if it goes over my head (the maths stuff usually!) I enjoy reading it 🙂
Not wishing to go off topic for too long but...
you seem to be refering to GPL protected software and missing and missrepresenting the cultural position of the "free as in Freedom" software movement. Which is; do as your wish with you code, but in the event that you use existing GPL protected code, share the changes under the same terms you enjoyed. Seems reasonable to me.
If you wish to use code freely as in free beer then there are other licenses such as BSD which has no restrictions on the openness or closedness of the resulting code.
If you obey the terms of the license under which the code is released everyone is happy just as with commercial licenses in the "real world" but without the non disclosure terms.
you seem to be refering to GPL protected software and missing and missrepresenting the cultural position of the "free as in Freedom" software movement. Which is; do as your wish with you code, but in the event that you use existing GPL protected code, share the changes under the same terms you enjoyed. Seems reasonable to me.
If you wish to use code freely as in free beer then there are other licenses such as BSD which has no restrictions on the openness or closedness of the resulting code.
If you obey the terms of the license under which the code is released everyone is happy just as with commercial licenses in the "real world" but without the non disclosure terms.
Years ago Jaycee, the schematics use to came together the user manual
This used to be this way because customers wanted to know what they had inside the case... this was so common, was standard, so normal as equipment arrived protected using styrofoam, plastic bags (even they do not use to swim) and cartoon package.... cartoon box.
Well.... in my mind this is not too old.... i felt as something that happened "yesterday".... in the reality those things finished 28 years ago.
We had in mind, in the past, that we had the rigth to repair our audio equipments and electronics by ourselves...not really having the obligation (have to, must go to the dealer) to send units to the ones could repair them.
The great value we found was electronics that had not used special customized parts.... we understood those days that ever repair shop in the town, every technician should be able to fix our equipment, so, inside standard parts, the ones easy to obtain into the local electronic market.... no rarities inside, nothing exclusive, nothing customized, no black boxes filled with secrets inside.
And this is my culture, ancient culture maybe, but i could see some advantages on that to customers alike i was... Philips equipments, audio appliances, tape recorders and Television arrived having the schematic very well made, using special paper and wonderfull graphics...very clear... those days you could compare in an easier way.
Now a days i turn angry..... feeling they are trying to make me as someone stupid, as i cannot know what is inside... even if they put stones inside, to sell the audio amplifier as something heavy (we feel this powerfull...human nature...if heavy, if big, then it is powerfull)..... i use to feel this sittuation a scandalous.... they sell black boxes... you do not even imagine what you have inside... have the factory installed 2 electrolitic condensers, each one having 1000uf, to reduce manufacturing costs?.... you do not know.... no schematics.... only adresses to their repair dealers.
You may be young my dear..... i am 57..... maybe you have born when those things were already "the standard behavior from manufacturers...the black secrecy box!".....maybe normal to you... i turn red with angry.... manufacturers seems to me alike Caribean dirty pirates.
Related software...the rigth to pay...the need to pay them...well.. this is some kind of philosophie only the wealthy countries can think about.... here, when it is hard to earn more than 600 dollares each month (if you are luck and have college).... of course people do not like to pay 300 dollares by a software, and they will try to have them free..otherwise they will not eat to pay the software..... instead to spend those 300 bucks to buy food they will pay the software..... so.... or they do not pay, or they will have to eat the software.
regards,
Carlos
This used to be this way because customers wanted to know what they had inside the case... this was so common, was standard, so normal as equipment arrived protected using styrofoam, plastic bags (even they do not use to swim) and cartoon package.... cartoon box.
Well.... in my mind this is not too old.... i felt as something that happened "yesterday".... in the reality those things finished 28 years ago.
We had in mind, in the past, that we had the rigth to repair our audio equipments and electronics by ourselves...not really having the obligation (have to, must go to the dealer) to send units to the ones could repair them.
The great value we found was electronics that had not used special customized parts.... we understood those days that ever repair shop in the town, every technician should be able to fix our equipment, so, inside standard parts, the ones easy to obtain into the local electronic market.... no rarities inside, nothing exclusive, nothing customized, no black boxes filled with secrets inside.
And this is my culture, ancient culture maybe, but i could see some advantages on that to customers alike i was... Philips equipments, audio appliances, tape recorders and Television arrived having the schematic very well made, using special paper and wonderfull graphics...very clear... those days you could compare in an easier way.
Now a days i turn angry..... feeling they are trying to make me as someone stupid, as i cannot know what is inside... even if they put stones inside, to sell the audio amplifier as something heavy (we feel this powerfull...human nature...if heavy, if big, then it is powerfull)..... i use to feel this sittuation a scandalous.... they sell black boxes... you do not even imagine what you have inside... have the factory installed 2 electrolitic condensers, each one having 1000uf, to reduce manufacturing costs?.... you do not know.... no schematics.... only adresses to their repair dealers.
You may be young my dear..... i am 57..... maybe you have born when those things were already "the standard behavior from manufacturers...the black secrecy box!".....maybe normal to you... i turn red with angry.... manufacturers seems to me alike Caribean dirty pirates.
Related software...the rigth to pay...the need to pay them...well.. this is some kind of philosophie only the wealthy countries can think about.... here, when it is hard to earn more than 600 dollares each month (if you are luck and have college).... of course people do not like to pay 300 dollares by a software, and they will try to have them free..otherwise they will not eat to pay the software..... instead to spend those 300 bucks to buy food they will pay the software..... so.... or they do not pay, or they will have to eat the software.
regards,
Carlos
By jaycee : NO ONE has the right to demand schematics or anything else for free
Perhaps ASKA should just SELL the schematic.
(piece of paper or paypal download - 20$)
Then poor/cheap people could just look at the product photo
,reverse engineer the layout.
Another way to get a real good amp is by schematic.
Find one that has rave reviews and no "black box"
(JVC super A is a prime example)proprietory circuitry.
Most repair manuals are very liberal with board layouts,
showing grounding techniques, rail layout/decoupling,
general amp topology,etc.in great detail.
As far as the software-off topic analogy I just have to
add my 2 cents. If a business /commercial entity needs
Proprietary code (windows ,etc.) make em' pay the
whole shot cause they profit off of it and most likely
write it off anyway.

The regular folks (most people here).. give each one free
software (really, who the hell can afford stupid $400 vista
ultimate!!)this is the main reason for the "digital divide".
500 copies XP and counting.😀
I really like the ASKA lifeforce 100, in fact, the amp boards
and circuit i'm building right now have a similar layout but
with a little d. self and others thrown in for good measure.
(2 already working-32US$ per amp).
My only problem
with the lifeforce is the price ,come on, 1122 US $. For
that much I could build a dozen amps with 2oz gold
fr4 -end to end blackgates.I would love to have a
pair of lifeforces(beautiful amp with a wonderful layout AND
reviews)but it is priced so far out of my league one can
only dream. I would get my card out for the schematic.
🙂 OS
ostripper said:Perhaps ASKA should just SELL the schematic.
(piece of paper or paypal download - 20$)
Yeah, that would work. Hugh would only need to sell 100 copies each and every week for then next 10 years to make a comfortable living. I'm sure there are 5000 people out there now just waiting for the schematic to be available electronically at a bargain price.
I wonder if unlimited support is thrown in for the $20. 😕
Wait...what would happen if it was only a $10. More people would buy it if it was cheaper. If Hugh could find 100,000 people to sell it too, then he'd be a millionaire overnight! 😀
I believe if the Hugh released to the public the schematic, BOM and PCB design it would become "just another amp available on the intranet", yesterday's news. People would look at the schematic and say, "I built one something like that once before". Unfortunately, us humans don't value things that are free.
BTW: 95% of the AKSA amp schematic is already available in one of the threads here. Most of the rest, can be determined by reading the AKSA, P61 and Digi125 threads. Hugh has actually already given away his AKSA design. He seems a bit more guarded on his latest designs.
regards
Ostripper,
Thanks for your post, I see where you are coming from.
It is unfortunate that you haven't the money to buy my Lifeforce, or my premium flagship, the fully built, retail Soraya, at $US3520 on present exchange rates. But then, only a few people can afford these, understandably.
Fortunately, you are highly skilled at electronics, and reverse engineering the Lifeforce would certainly not be beyond you, although it will take a fair time to get it right as I've taken steps in the layout, as you would doubtless expect, to make it quite difficult to extract that last bit of magic, compensation and phase lead, for example.
The AKSA started (and remains!) a kitset product. Noticing the poor margins and the onerous service demands I decided to make a built/tested module in the Lifeforce, and finally, a retail product only for the Soraya, in order to make a living from it all. This is necessary for a life, after all. It is presently 9pm on a Saturday night in south eastern Oz, and I have made two service responses today, and have two more to go right now. This would rarely happen with a module or retail product.
We live in a world where many international jurisdictions have little regard for intellectual property. Since I retired from the military 15 years ago I've devoted a large portion of my life to audio. Eventually you reach a point where it has to pay, otherwise you are tempted to run girls or sell drugs. I surmise that you have never visited Australia; it is far more expensive to live in this beautiful country than the US, my other favourite country. A good meal in a restaurant in Oz is more expensive than the US, and automobiles, travel, gasoline, services, and utilities are vastly more expensive.
Thus the majority of consumers, and you are but one of many in a privileged country, have champagne taste on beer income. They will expect product, warranty and service backup for prices only possible on 3rd world labor costs. I have to compete in this environment, but my high prices include exceptional service and backup in fluent English and often within mere hours of email inquiry. When you are in trouble, this is priceless! No call center phone waits with me. Just today I've received two service calls, both from the US, graciously negotiated, indeed, both customers are now friends and delightful people.
While Aspen's intentions may be genuine, prices are probably a little too high, but this sort of product backing and honest service has to be paid for somehow, otherwise I'm working for nothing, or maybe $5 an hour at best. Would you work for $5 an hour? Of course not..... we have to eat pizza at the end of the day!!
I have no illusions my AKSA is unique. Of course it isn't, it's simple, almost rudimentary. BUT, it's the result of a huge amount of audio detective work, undertaken over years and necessarily involving huge attention to detail and meticulous assessment. You mentioned you like the layout on the Lifeforce; I can assure you all my designs feature this assiduous design care. Downside is hundreds of hours at the PC working the CAD programs to get it 100% right. Yet it's this attention to detail that does make a better product, I promise you. I see it in just about every part which makes up my '92 Toyota Cressida; everything has been designed with careful thought and maniacal attention to detail; same with a Benz, Caterpillar diesel, or Warsila-Sulzer ship engine.
OTOH, my Soraya, the flagship amp, is unique. There is nothing like it in the audio market. I know this because I have made a lifelong study of the market, and particularly of the technology. I bring no engineering dogma or prejudice to this design; my qualifications lie in Business IT and English language, but I have no prejudice. Just as the subjective 'golden ear' set are pilloried for their amusing ways, I would hold that the EEs can also be prejudiced, particularly in areas where measurement regimes are not yet fully matured. Not true of all, of course, many do understand the ethic of meticulous care and tireless observation of the working environment. My mantra is, and will remain, 'How does it sound'. Significantly, my detractors would not even be interested in my circuits, nor in listening to my products, so their criticisms are based solely on their own prejudices. I'm quite happy with this, because they will not find out the truth, since their minds are closed. Thank God for closed minds, it gives the little guys a foot in the door......
So there you have it. Feel free to email me with a discursive diatribe on my high prices... Be assured I will respond in good humor!!
Cheers,
Hugh
Thanks for your post, I see where you are coming from.
It is unfortunate that you haven't the money to buy my Lifeforce, or my premium flagship, the fully built, retail Soraya, at $US3520 on present exchange rates. But then, only a few people can afford these, understandably.
Fortunately, you are highly skilled at electronics, and reverse engineering the Lifeforce would certainly not be beyond you, although it will take a fair time to get it right as I've taken steps in the layout, as you would doubtless expect, to make it quite difficult to extract that last bit of magic, compensation and phase lead, for example.
The AKSA started (and remains!) a kitset product. Noticing the poor margins and the onerous service demands I decided to make a built/tested module in the Lifeforce, and finally, a retail product only for the Soraya, in order to make a living from it all. This is necessary for a life, after all. It is presently 9pm on a Saturday night in south eastern Oz, and I have made two service responses today, and have two more to go right now. This would rarely happen with a module or retail product.
We live in a world where many international jurisdictions have little regard for intellectual property. Since I retired from the military 15 years ago I've devoted a large portion of my life to audio. Eventually you reach a point where it has to pay, otherwise you are tempted to run girls or sell drugs. I surmise that you have never visited Australia; it is far more expensive to live in this beautiful country than the US, my other favourite country. A good meal in a restaurant in Oz is more expensive than the US, and automobiles, travel, gasoline, services, and utilities are vastly more expensive.
Thus the majority of consumers, and you are but one of many in a privileged country, have champagne taste on beer income. They will expect product, warranty and service backup for prices only possible on 3rd world labor costs. I have to compete in this environment, but my high prices include exceptional service and backup in fluent English and often within mere hours of email inquiry. When you are in trouble, this is priceless! No call center phone waits with me. Just today I've received two service calls, both from the US, graciously negotiated, indeed, both customers are now friends and delightful people.
While Aspen's intentions may be genuine, prices are probably a little too high, but this sort of product backing and honest service has to be paid for somehow, otherwise I'm working for nothing, or maybe $5 an hour at best. Would you work for $5 an hour? Of course not..... we have to eat pizza at the end of the day!!
I have no illusions my AKSA is unique. Of course it isn't, it's simple, almost rudimentary. BUT, it's the result of a huge amount of audio detective work, undertaken over years and necessarily involving huge attention to detail and meticulous assessment. You mentioned you like the layout on the Lifeforce; I can assure you all my designs feature this assiduous design care. Downside is hundreds of hours at the PC working the CAD programs to get it 100% right. Yet it's this attention to detail that does make a better product, I promise you. I see it in just about every part which makes up my '92 Toyota Cressida; everything has been designed with careful thought and maniacal attention to detail; same with a Benz, Caterpillar diesel, or Warsila-Sulzer ship engine.
OTOH, my Soraya, the flagship amp, is unique. There is nothing like it in the audio market. I know this because I have made a lifelong study of the market, and particularly of the technology. I bring no engineering dogma or prejudice to this design; my qualifications lie in Business IT and English language, but I have no prejudice. Just as the subjective 'golden ear' set are pilloried for their amusing ways, I would hold that the EEs can also be prejudiced, particularly in areas where measurement regimes are not yet fully matured. Not true of all, of course, many do understand the ethic of meticulous care and tireless observation of the working environment. My mantra is, and will remain, 'How does it sound'. Significantly, my detractors would not even be interested in my circuits, nor in listening to my products, so their criticisms are based solely on their own prejudices. I'm quite happy with this, because they will not find out the truth, since their minds are closed. Thank God for closed minds, it gives the little guys a foot in the door......
So there you have it. Feel free to email me with a discursive diatribe on my high prices... Be assured I will respond in good humor!!
Cheers,
Hugh
Well said, Hugh. People have no idea of when to stop asking for free info. We have to make some sort of living too, and it is not a wealthy occupation.
Now if we can get the medical doctors to work for free.
Auto mechanics?
Now if we can get the medical doctors to work for free.

Some hobbyists usually think they are allowed to ask everything for free. They are unable to imagine there are hawk eyes waiting for any usable information to get profit from. Everyone of us has a kind of experience like this.
Hugh, your prices for a built amp is not particular high. It costs more to build by hand and sure your customers appreciate that. Don't sell your stuff too cheap!
Mr Bean said:I don't know what all of the fuss is about. I have an old Mullard applications book that is full of these types of circuits. This circuit is typical of that used in the early 70's. I have many old amps sitting in the shed collecting dust with a similar topology.
This amp would be inadequate for my use. I have speakers which dip down to 2 ohms at certain frequencies and amps like this would be destroyed instantly. There is no short circuit protection or muting so it would be easy to destroy this amp.
There is also no load stabilizing network so its stability driving a capacitive load would be questionable.
Sorry for my negative prognosis 🙁
Hello
You can not judge the Aksa on this old Rod Elliot site schematic.
Even that conceptual schematic of the AKSA are better than the old Rod Elliot site Aksa schematic that you show.
And the complete Aksa are more than the conceptual schematic Hugh.
Everything in Aksa are in the details, parts values and subcircuits.
Find somebody who have an Aksa or a Life Force and listen to it, that is the only way to know.
Bye
Gaetan
Here is the link to the conceptual schematic Hugh post;
http://www.diyaudio.com/forums/attachment.php?postid=1652112&stamp=1226042919
Mr Bean (an amusing name indeed.....),
The fuss used to be about the AKSA, not any more, as not many are sold now. I've moved on.
But go right ahead, I've just published something like that in 'Everything Else'. Be my guest, hey, when you get into trouble, why not email me and ask me for some advice?
But you will need component values, types and brands, and while the layout can be partly figured out from the photos, there is still a great deal of work to get the layout right. It's boring work, too, a bit like peeling potatoes or juicing oranges.
And of course, there is always the prejudice that it won't sound good because it's laughably simple. Poor parameters, as PMA has said, only 0.045% at full power 10KHz into 8R. Terrible stability into capacitive loads, hmmm, how is it that I have several customers using the AKSA to drive electrostatic speakers with perfect reliability? With respect, and notwithstanding your obvious facility with the lingo, you do not know all the facts, and display the usual closed mind, sound quality assessed on the basis of a conceptual schematic. AKSA performace is lousy really in a world of 0.002% THD and better. So why the rave around the world over several years about this AKSA? You'd never know until you heard it.....
The hobbyist has then to ask how much is his time worth? $5 an hour, perhaps $10? I put hundreds of hours into the layout, and while that was clearly over the top, it does contribute for reasons of parasitics, which directly impacts compensation and lead, and this in turn intimately affects sonics.
Thanks John, PMA, Carlos, Peter, Greg, Gaetan, Peranders, for your support. John, I certainly do agree about the doctors. I am taking a routine heart test on Monday, cost? $AUD465 for a procedure that takes half an hour, most of which I admit comes back on Medicare. Shame my doctor is not on a forum so I can berate him for not giving the test free! And they are not the bad guys, try the lawyers!!
There is more work expended in devising ways of making a profit from audio than there is in developing new and clever circuits, and this is why I take my hat off to guys like Nelson who clearly have made a go of it, and remained a thoroughly decent fellow in the process.
Cheers,
Hugh
The fuss used to be about the AKSA, not any more, as not many are sold now. I've moved on.
But go right ahead, I've just published something like that in 'Everything Else'. Be my guest, hey, when you get into trouble, why not email me and ask me for some advice?
But you will need component values, types and brands, and while the layout can be partly figured out from the photos, there is still a great deal of work to get the layout right. It's boring work, too, a bit like peeling potatoes or juicing oranges.
And of course, there is always the prejudice that it won't sound good because it's laughably simple. Poor parameters, as PMA has said, only 0.045% at full power 10KHz into 8R. Terrible stability into capacitive loads, hmmm, how is it that I have several customers using the AKSA to drive electrostatic speakers with perfect reliability? With respect, and notwithstanding your obvious facility with the lingo, you do not know all the facts, and display the usual closed mind, sound quality assessed on the basis of a conceptual schematic. AKSA performace is lousy really in a world of 0.002% THD and better. So why the rave around the world over several years about this AKSA? You'd never know until you heard it.....
The hobbyist has then to ask how much is his time worth? $5 an hour, perhaps $10? I put hundreds of hours into the layout, and while that was clearly over the top, it does contribute for reasons of parasitics, which directly impacts compensation and lead, and this in turn intimately affects sonics.
Thanks John, PMA, Carlos, Peter, Greg, Gaetan, Peranders, for your support. John, I certainly do agree about the doctors. I am taking a routine heart test on Monday, cost? $AUD465 for a procedure that takes half an hour, most of which I admit comes back on Medicare. Shame my doctor is not on a forum so I can berate him for not giving the test free! And they are not the bad guys, try the lawyers!!
There is more work expended in devising ways of making a profit from audio than there is in developing new and clever circuits, and this is why I take my hat off to guys like Nelson who clearly have made a go of it, and remained a thoroughly decent fellow in the process.
Cheers,
Hugh
So build the circuit and accept the fact that you will achieve maybe 80-90% of the performance of an AKSA. Given the low cost, this is not a bad result.
But if you want to listen to an AKSA or Life Force, you will have to buy one or pay Hugh for the fruits of all the work and thinking he has done all these years.
If you want a superior amp design but don't want to pay for it with money you will have to pay for it with years of study and hard work. It's also possible that you will simply be lucky. Some of you will do exactly this and will bring forth really exceptional designs... and after all that work, the sweat and worry, and the insights that came to you in the dark of night, you will be ready to give your work away for free? Probably not.
For full disclosure, I've built five AKSAs and two Life Force amps (given two as gifts to family members, one is in our bedroom system, and four are driving the Orions). My preamp is an Aspen GK-1. While I can attest to Hugh's excellent service, and I can say that visitors find the music in my house "very convincing", I have not listened to a lot of other equipment. When I was looking to buy my first serious amp, I was led to Hugh's AKSA amps by the recommendation of a very respected audiophile that most of you would recognize. I have been very happy with the result.
If you are serious: study, build, measure, listen, think, and talk with the best people that you can engage (study what the old guard has done and consider the arguments of the rebels--young and old). You need to really immerse yourself in the problem and be ready to hang in for decades. Build up your own insights and views, get good enough so that your ideas are interesting to the best people in the field, and then talk with them. This is how one makes progress on a difficult problem. Wishing and whingeing will not get you there.
Good luck,
Peter
But if you want to listen to an AKSA or Life Force, you will have to buy one or pay Hugh for the fruits of all the work and thinking he has done all these years.
If you want a superior amp design but don't want to pay for it with money you will have to pay for it with years of study and hard work. It's also possible that you will simply be lucky. Some of you will do exactly this and will bring forth really exceptional designs... and after all that work, the sweat and worry, and the insights that came to you in the dark of night, you will be ready to give your work away for free? Probably not.
For full disclosure, I've built five AKSAs and two Life Force amps (given two as gifts to family members, one is in our bedroom system, and four are driving the Orions). My preamp is an Aspen GK-1. While I can attest to Hugh's excellent service, and I can say that visitors find the music in my house "very convincing", I have not listened to a lot of other equipment. When I was looking to buy my first serious amp, I was led to Hugh's AKSA amps by the recommendation of a very respected audiophile that most of you would recognize. I have been very happy with the result.
If you are serious: study, build, measure, listen, think, and talk with the best people that you can engage (study what the old guard has done and consider the arguments of the rebels--young and old). You need to really immerse yourself in the problem and be ready to hang in for decades. Build up your own insights and views, get good enough so that your ideas are interesting to the best people in the field, and then talk with them. This is how one makes progress on a difficult problem. Wishing and whingeing will not get you there.
Good luck,
Peter
psp said:So build the circuit and accept the fact that you will achieve maybe 80-90% of the performance of an AKSA. Given the low cost, this is not a bad result.
But if you want to listen to an AKSA or Life Force, you will have to buy one or pay Hugh for the fruits of all the work and thinking he has done all these years.
Well said Peter. I believe anyone who is truly into audio designs knows how difficult it is and rare to come up with something so special its one thing if its by chance but countless hours of spending (time and money) should be compensated if not rewarded. From reading dozens of threads on this forum I believe Aska has contributed much more to the diy community with advises and info than giving away his schematic. Just my opinion
Hello Mr Bean
You can read the thread about Aksa amp listening impressions, you will read from Aksa users what they are thinking about it ;
http://www.diyaudio.com/forums/showthread.php?threadid=71249&perpage=25&pagenumber=1
Bye
Gaetan
You can read the thread about Aksa amp listening impressions, you will read from Aksa users what they are thinking about it ;
http://www.diyaudio.com/forums/showthread.php?threadid=71249&perpage=25&pagenumber=1
Bye
Gaetan
And while we look for what subjective musical impressions people have from AKSA amplifier,
we may also read what a technically experienced member
once told about the AKSA layout PCB.
Like I quoted Fred Dieckmann in this post:
http://www.diyaudio.com/forums/showthread.php?postid=815633#post815633
which is not unique only for this amplifier,
when he refers to component choice and practical details of construction
as being important for the final results.
Just looking at and comparing two schematics can not tell which amplifier is the better one.
Possibly such a compare can give a clue about eventual potential,
but the arrangement of power supply and grounding can alone make the difference between a good and a bad amplifier.
Regards, Lineup
we may also read what a technically experienced member
once told about the AKSA layout PCB.
Like I quoted Fred Dieckmann in this post:
http://www.diyaudio.com/forums/showthread.php?postid=815633#post815633
I think Hugh has tried to share a vital message,The devil is in the details.
BTW the PCB design is one best audio PCBs I ever seen.
Simple topology or not, this a very sophisticated amp and is the result of years of work.
which is not unique only for this amplifier,
when he refers to component choice and practical details of construction
as being important for the final results.
Just looking at and comparing two schematics can not tell which amplifier is the better one.
Possibly such a compare can give a clue about eventual potential,
but the arrangement of power supply and grounding can alone make the difference between a good and a bad amplifier.
Regards, Lineup
Mr Bean said:
If you have found a set of components and values as well as PCB layout that has somehow miraculously transformed this circuit into something that is exceptional then all I can say is that maybe you should go and buy a lottery ticket 😉
Mr Bean its not miracle its careful engineering and listening
heres another reveiw from TNT
http://www.tnt-audio.com/ampli/aksa_e.html
youll find a lot more positive reviews from owners worldwide if your looking for it, the negative reviews Ive seen so far are from people who hasn't even listened to the amp.
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