RMS versus Peak
lineup
think power not voltage
a 6db level of voltage peaks above the RMS usage requires 16 times the power!! RMS was determined from a CRO on the output. Peaks measured with CLIO. This is empirical NOT theorising. Sure there is room for error ( impedance assumed etc) but I suggest the orders of magnitude still hold.
I remember even in old analogue days how surprisingly high the peak voltages were coming off a cartridge and the headroom provided by tube phono stages' higher rail voltages giving them an advantage.
Even with only 16 bits and highish recording levels there is plenty of room for dynamics on CD's. I think you may underestimate the peak voltages present.
cheers
lineup
think power not voltage
a 6db level of voltage peaks above the RMS usage requires 16 times the power!! RMS was determined from a CRO on the output. Peaks measured with CLIO. This is empirical NOT theorising. Sure there is room for error ( impedance assumed etc) but I suggest the orders of magnitude still hold.
I remember even in old analogue days how surprisingly high the peak voltages were coming off a cartridge and the headroom provided by tube phono stages' higher rail voltages giving them an advantage.
Even with only 16 bits and highish recording levels there is plenty of room for dynamics on CD's. I think you may underestimate the peak voltages present.
cheers
dynamic range
Actually if you sample pop CD's from the 90's on, they have had the guts compressed right out of them. This is just stupid engineering practice which achieves nothing.
Check this out:
http://www.audioholics.com/techtips/specsformats/LPvsCDformats2.php
tells vinyl freaks what they already knew!! But also shows they is a considerable power requirement above average.
cheers
Actually if you sample pop CD's from the 90's on, they have had the guts compressed right out of them. This is just stupid engineering practice which achieves nothing.
Check this out:
http://www.audioholics.com/techtips/specsformats/LPvsCDformats2.php
tells vinyl freaks what they already knew!! But also shows they is a considerable power requirement above average.
cheers
apologies for error
my apologies. my brain is going!! double voltage is 6db whereas double power is 3db.
so 6db voltage increase is 4 times power NOT 16 times!!
( I hope I got it right :-(
there is plenty of evidence of peaks over 11db higher however so the high power requirement can still occur.
cheers
my apologies. my brain is going!! double voltage is 6db whereas double power is 3db.
so 6db voltage increase is 4 times power NOT 16 times!!
( I hope I got it right :-(
there is plenty of evidence of peaks over 11db higher however so the high power requirement can still occur.
cheers
Re: dynamic range
Not really stupid engineering, because it has a purpose.
http://www.diyaudio.com/forums/showthread.php?s=&postid=747754&highlight=#post747754
The music labels are the boss here, the engineers do what they are asked for.
Ultimately, it's all a bunch of idiots. 😀
hifryer said:
Not really stupid engineering, because it has a purpose.
http://www.diyaudio.com/forums/showthread.php?s=&postid=747754&highlight=#post747754
The music labels are the boss here, the engineers do what they are asked for.
Ultimately, it's all a bunch of idiots. 😀
Then i change the switch to the other amplifier...here is the image when i did that.
I think it is not difficult to evaluate.
All of us.... each one of us have the "Hiper Quality Measurement Instrument!"...our own face expression.
We do not need to complicate... just watch your face when listening...just that!
It is clear what amplifier is the best...just that!
regards,
Carlos
I think it is not difficult to evaluate.
All of us.... each one of us have the "Hiper Quality Measurement Instrument!"...our own face expression.
We do not need to complicate... just watch your face when listening...just that!
It is clear what amplifier is the best...just that!
regards,
Carlos
Attachments
Hi Carlos,
One eye closed is good or bad?
Have you found an amplifier that makes you close both eyes?
Thanks
Raja
One eye closed is good or bad?
Have you found an amplifier that makes you close both eyes?
Thanks
Raja
Re: As i love to simplify things...i discover a sound quality meter
I think that sound is not very good, Carlos
😀
I guess it is your cheap MP3 player - and not your AKSA
destroyer X said:
I think that sound is not very good, Carlos
😀
I guess it is your cheap MP3 player - and not your AKSA
HIFRYER
"I agree. But this is not currently available. Maybe when everything is digital in the whole signal path ( soon) we will buy software with various controls and effects. 1,000W will be commonplace and sound good.
In the meantime, I had the thought ( not original) of adding a pot to an SRPP preamp stage so as to vary distortion by varying the plate load. Could dial in the sound you like ;-)
But the problem is it seems more complex than that in that you don't seem to be able to "cure" an over-clinical SS power amp by adding an over-tubey pre-amp!"
The idea of a "magic box" adding distorsion in a controlled manner is an old idea which should have been submitted to many tests before saying anything about the sound of amplifiers. Such tests have been rarely reported, and, when they were, it was more in the context of loudspeakers than amplifiers.
I am not entirely sure of my hypothesis about the sound of amplifiers, however, the more I dig the subject, the more it tends to be confirmed. I'd like to see it rigorously tested.
It is not very difficult to get distorsion in a controlled manner using analog circuits. There is a Ian Hickman's circuit to make beautifully graded harmonics (1 diode, a couple of op-amps and some resistors). For separate second and third harmonic generation,
designers of analog muscial instruments may help.
~~~~~~~ Forr
§§§
"I agree. But this is not currently available. Maybe when everything is digital in the whole signal path ( soon) we will buy software with various controls and effects. 1,000W will be commonplace and sound good.
In the meantime, I had the thought ( not original) of adding a pot to an SRPP preamp stage so as to vary distortion by varying the plate load. Could dial in the sound you like ;-)
But the problem is it seems more complex than that in that you don't seem to be able to "cure" an over-clinical SS power amp by adding an over-tubey pre-amp!"
The idea of a "magic box" adding distorsion in a controlled manner is an old idea which should have been submitted to many tests before saying anything about the sound of amplifiers. Such tests have been rarely reported, and, when they were, it was more in the context of loudspeakers than amplifiers.
I am not entirely sure of my hypothesis about the sound of amplifiers, however, the more I dig the subject, the more it tends to be confirmed. I'd like to see it rigorously tested.
It is not very difficult to get distorsion in a controlled manner using analog circuits. There is a Ian Hickman's circuit to make beautifully graded harmonics (1 diode, a couple of op-amps and some resistors). For separate second and third harmonic generation,
designers of analog muscial instruments may help.
~~~~~~~ Forr
§§§
Yes, that compression is terrible...i also dislike this.
But there are moments, as you told very well, that some compression is usefull..... automobiles for instance.
I remember the old days, when FM stations are only transmitting for testing purposes....wonderfull.....sound had dinamics...no compressor, and adjusted to avoid the limiters to enter in action avoiding excessive deviation in the FM carrier.
Sounded nice, compared with our turntables, as the stations were using better master tapes or even better cartridges and better Long Plays..... i have found some musics with dinamics, searching in "relaxing music" and "new age music"....and those i prefer.
That ideas to create harmonics to evaluate is nice....the first result that will be clear to everyone, is that some distortion is nice, also that amplifiers with very low distortion sounds terrible.... alike food without salt.
Many surprises will appear, as everything is harmony....harmonics is the base of the good music.
Distortion of those harmonics, increase of them, creation of others...this will be bad......but depending of the case, may be very good.
Do you remember when music was generated by sinthetizers using only a single voice...do you remember what an awfull thing?...them many voices, harmonics were produced, the music turn rich and warm.
This thread is very nice, OBiwan, frier and others are posting very interesting ideas.
The French one also has nice ideas....good thread, no bad boys here, and all guys very skilled.
congratulation to you all....very rich ideas.
regards,
Carlos
But there are moments, as you told very well, that some compression is usefull..... automobiles for instance.
I remember the old days, when FM stations are only transmitting for testing purposes....wonderfull.....sound had dinamics...no compressor, and adjusted to avoid the limiters to enter in action avoiding excessive deviation in the FM carrier.
Sounded nice, compared with our turntables, as the stations were using better master tapes or even better cartridges and better Long Plays..... i have found some musics with dinamics, searching in "relaxing music" and "new age music"....and those i prefer.
That ideas to create harmonics to evaluate is nice....the first result that will be clear to everyone, is that some distortion is nice, also that amplifiers with very low distortion sounds terrible.... alike food without salt.
Many surprises will appear, as everything is harmony....harmonics is the base of the good music.
Distortion of those harmonics, increase of them, creation of others...this will be bad......but depending of the case, may be very good.
Do you remember when music was generated by sinthetizers using only a single voice...do you remember what an awfull thing?...them many voices, harmonics were produced, the music turn rich and warm.
This thread is very nice, OBiwan, frier and others are posting very interesting ideas.
The French one also has nice ideas....good thread, no bad boys here, and all guys very skilled.
congratulation to you all....very rich ideas.
regards,
Carlos
Re: Yes, that compression is terrible...i also dislike this.
Amen!
You know, on very good acoutic guitar (most are spanish), when you hit a string and let it resonate, it will make sound for a long time, on the best ones for 30 seconds, and even more. The sound goes gradually decreasing.
Putting things into perspective, on good recordings, listened on a good system, there are things like this, you can hear strings resonating and fingers slipping, the singer breathing, the echoes and the ambience of the recording location.
All this with various instruments playing simultaneously and a singer, and everything is easy to follow, all the musical details are easily assimilated, with no mental efford.
We can close our eyes, relax and enjoy the music, the expression on the face is pure joy.
Normal hi-fi is not this, it's just bass - mids - treble.
In this occasion, we make a bad face and close our right eye. 😛
destroyer X said:
Amen!
You know, on very good acoutic guitar (most are spanish), when you hit a string and let it resonate, it will make sound for a long time, on the best ones for 30 seconds, and even more. The sound goes gradually decreasing.
Putting things into perspective, on good recordings, listened on a good system, there are things like this, you can hear strings resonating and fingers slipping, the singer breathing, the echoes and the ambience of the recording location.
All this with various instruments playing simultaneously and a singer, and everything is easy to follow, all the musical details are easily assimilated, with no mental efford.
We can close our eyes, relax and enjoy the music, the expression on the face is pure joy.
Normal hi-fi is not this, it's just bass - mids - treble.
In this occasion, we make a bad face and close our right eye. 😛
I think that over-praising easily gives us some kind of smell.
As if to try to hide something bad behind.
Easily turns out as a bad advertisement . . .
Regards
jh
As if to try to hide something bad behind.
Easily turns out as a bad advertisement . . .
Regards
jh
Well, my dear Kilobyte confused...everything has the "worst side"
If you gain 60 Zilion Billionen Dollares in lottery....you will lost the peace in the first moment.
People will try to robber you!
You will have to search for a bank...no!...many banks...not to have problems.
And that money...all that money in papper!...they may burn!..so, you will have Gold Bars.
But Gold bars shines...and they are heavy, also, if someone enter your home...hehe...can stole your Gold bars...also they can fell down between your fingers and smash you foot finger, and when passing can Guilhotine other thing...ahahahaha
Well...you must keep the gold hidden....have to make a hole!...yeah, a hole.....but someone can watch you diging a hole!...so...you may be arrested..suspection of murderer and where is the one you killed?
People when start to smile at you...what are they meaning?, are they smilling to you?...or smiling to your Gold?
And you daugther...she always kissed you...but now on...is that because of your money?
If you travell, you will not have conditions to know what is going on in your home.... are your wife buying 4 Ferraris and 3 lamborghinis with your money?...is your daugther boy friend digging that hole to stole your gold.
Well...if we decide to watch the negative things....we can lost our peace....better to observe the positive things and go living, because lies...they are everywhere...or you accept them, or better to not read, not listen, not talk and not write....also may be better not to think.
For instance, why not to think...there are moments that i feel that i am beautifull....and i am not!...so...i am lying to myself.
ahahahaha...not way to scape...better to relax, or the pain will be bigger...or longer...or harder.
regards,
Carlos
jeje...hehe...hahah...hôhôhô
If you gain 60 Zilion Billionen Dollares in lottery....you will lost the peace in the first moment.
People will try to robber you!
You will have to search for a bank...no!...many banks...not to have problems.
And that money...all that money in papper!...they may burn!..so, you will have Gold Bars.
But Gold bars shines...and they are heavy, also, if someone enter your home...hehe...can stole your Gold bars...also they can fell down between your fingers and smash you foot finger, and when passing can Guilhotine other thing...ahahahaha
Well...you must keep the gold hidden....have to make a hole!...yeah, a hole.....but someone can watch you diging a hole!...so...you may be arrested..suspection of murderer and where is the one you killed?
People when start to smile at you...what are they meaning?, are they smilling to you?...or smiling to your Gold?
And you daugther...she always kissed you...but now on...is that because of your money?
If you travell, you will not have conditions to know what is going on in your home.... are your wife buying 4 Ferraris and 3 lamborghinis with your money?...is your daugther boy friend digging that hole to stole your gold.
Well...if we decide to watch the negative things....we can lost our peace....better to observe the positive things and go living, because lies...they are everywhere...or you accept them, or better to not read, not listen, not talk and not write....also may be better not to think.
For instance, why not to think...there are moments that i feel that i am beautifull....and i am not!...so...i am lying to myself.
ahahahaha...not way to scape...better to relax, or the pain will be bigger...or longer...or harder.
regards,
Carlos
jeje...hehe...hahah...hôhôhô
Re: Well, my dear Kilobyte confused...everything has the "worst side"
Well I have no daughter.
So, we should be positive to avoid a negative fact . . . ? ? ?
Ahahahahahahahaha . . . . . . . . . . . . . . . . . . 😀
destroyer X said:
Well I have no daughter.
So, we should be positive to avoid a negative fact . . . ? ? ?
Ahahahahahahahaha . . . . . . . . . . . . . . . . . . 😀
ASPEN AMPLIFIERS - AKSA - Hugh Dean
The image is borrow from:
diyaudio topic: New home for AKSA 55
When me, lineup, started this topic, it was because I wanted to know more of Hugh Dean AKSA amplifiers.
I has heard members who built them be very happy!
And this topic turned out well.
We have got numerous reviews. Most of them positive, naturally.
Remember the quality of an amplifier takes more than a schematic.
Components choice, matching and practical details are as important.
But here you can see a simplified schematic:
destroyer X topic: Attention AKSA 55, Hugh is thinking in let us see schematics
-------------------------------------------------------------------------------
ASPEN AMPLIFIERS
- and Hugh Dean has mentioned some new release: AKSA Lifeforce
- AKSA Lifeforce 100
- AKSA Lifeforce 55
- AKSA SWIFT PREAMPLIFIER
But I think the main products stay the same:
- AKSA 55
- AKSA 100
-------------------------------------------------------------------------------
Any new information or opinion about AKSA designs
are welcome.
Regards
lineup
lineup said:
An externally hosted image should be here but it was not working when we last tested it.
The image is borrow from:
diyaudio topic: New home for AKSA 55
When me, lineup, started this topic, it was because I wanted to know more of Hugh Dean AKSA amplifiers.
I has heard members who built them be very happy!
And this topic turned out well.
We have got numerous reviews. Most of them positive, naturally.
Remember the quality of an amplifier takes more than a schematic.
Components choice, matching and practical details are as important.
But here you can see a simplified schematic:
destroyer X topic: Attention AKSA 55, Hugh is thinking in let us see schematics
-------------------------------------------------------------------------------
ASPEN AMPLIFIERS
- and Hugh Dean has mentioned some new release: AKSA Lifeforce
- AKSA Lifeforce 100
- AKSA Lifeforce 55
- AKSA SWIFT PREAMPLIFIER
But I think the main products stay the same:
- AKSA 55
- AKSA 100
-------------------------------------------------------------------------------
Any new information or opinion about AKSA designs
are welcome.
Regards
lineup
well i have had Aksa 55 few months ago and I will put a small review a wrote for Hugh Dean (I hope he will be happy with it) related Aksa 55.
=====================
Well, my dear fellow friends..... in the past 6 months I was living with a nice little amplifier made by a good guy called Hugh Dean from Aspen Amplifiers. This text that I am writing is because I have had the need to write something positive about that little jewel in our diy comunity. This is because I have seen on this forum in some other forums that some guys try to accuse Mr. Dean of taking to much money for nothing out of our pockets…. Well, the one that has to pay always says that something he is buying is to expensive isn’t it…. Unfortunatelly for them – most of those guys didn’t even listen to what they are trying to accuse.
Well, I hope that this small contribution will help to prevent such things to happen again.
Arround six months ago I started to build Aksa 55 N+ amplifier. The informations that I was provided with were more than enough to help me to build this nice kit. Also, if I have had some questions I was free to ask Mr. Dean to help me with them.
The quality of the pcb boards is very good. They are small but not to small – just about right for the guys that want to have very compact looking amplifier – in fact Mr. Dean has told me that he has invested (during his development time) arround 600 hours to develop the amplifier boards. Well, that is a lot of time – the result is in my opinion very, very good. I did not feel that there is any not normal problems while soldering the boards. I even took the money and solder everything on the boards with WBT silver solder (well – it can't make things worst). Also I have changed every electrolythic capacitor with Black Gate standard type capacitors I was having arround that were the same value as noted in schematic of the amp. I had the feeling that this might be better than use the capacitors provided in the kit. Resistors wer also changed to Dale RN55/60 resistors.... Well, Mr. Pass use them so I thought that they might be better to than the ones in the kit. Yes, yes, I know – I have changed a lot in this kit – but my opinion is that the change is only to a better not worst sound (I hope that I was not wrong).
Anyway, my current system at that time was Onix OA24 preamplifier, Onix SOAP 2 power supply for the amplifier and Onix OA601 power amplifier. The speakers were Rogers LS2a/2 studio monitors and I was having a nice diy dac and Pioneer transport. The system sounded good in my opinion but I wanted more of everything – to develop further so to say.
I decided to take some notes so that I can examine the burning in process so when I first turned the amplifier on I noted no power on thump – the amp was dead quiet like it is not working at all.. The sound was very fast and not sharp – it was faster than my Onix power amplifier. Also the sound was with more air and with huge sounstage. I was very impressed and also happy with the result.
After that first turn on my nightmare with burning in started... Since I don't have to much confidense in myself I did not want to leave the amplifier turned on the whole night...Also I don't have to much time to listen to music during the day so I was playing the amplifier 2-4 hours per day. After I few days of taking notes of what was happening with the sound I decided to stop doing it because the sound was varying a great deal – from simply astonishing to „worst than s..t“ – sorry.... After arround 100-150 hours of listening and sometimes fighting with myself – asking what was in my mind that i build this thing – the amplifier started to settle down and take the final form.
The end result of everything – my Onix is not playing any more (he is to be sold ), I have a tube preamplifier that I am working on right now based arround 12B4 tube (it is preety much in its final stage).... New speakers are also here, Fase Aria. Well, guys this little beauty oppened some new territories I did not hear at my home... The amplifier has a very big capacity – it is VERY emotional amplifier very gentle but this doesn't mean that it doesn't have bass or something – it knows how to make you FEEL the music – this little beauty has taught me to listen to music not the system (even when I was listening on my old speakers and Onix preamplifier) – I forgot to do that. Sometimes I am so satisfied with the feeling that I have in myself while listening to the music from Aria, Aksa, 12B4 combination that I don't want to move a muscle so that the feeling doesn't get scared and go away.... You know...
So I must ask You all, how much this feeling is worth to all of us..... Well, to me – a lot – I was looking for it for a long time... finally I found it – and for the reasonable price too.
I must thank to Mr. Dean for his help and ideas – he was allways having time to reply on my (sometimes stupid) questions. He was allways kind – I did not feel at any time that he was angry on somebody or something – was allways calm and helpfull. I want to thank him also for this amplifier that he has developed and no guys I don't have my wallet inside his company, I am telling this because I want to tell it; because I am happy and satisfied.
Best regards and happy diy
===========================================
=====================
Well, my dear fellow friends..... in the past 6 months I was living with a nice little amplifier made by a good guy called Hugh Dean from Aspen Amplifiers. This text that I am writing is because I have had the need to write something positive about that little jewel in our diy comunity. This is because I have seen on this forum in some other forums that some guys try to accuse Mr. Dean of taking to much money for nothing out of our pockets…. Well, the one that has to pay always says that something he is buying is to expensive isn’t it…. Unfortunatelly for them – most of those guys didn’t even listen to what they are trying to accuse.
Well, I hope that this small contribution will help to prevent such things to happen again.
Arround six months ago I started to build Aksa 55 N+ amplifier. The informations that I was provided with were more than enough to help me to build this nice kit. Also, if I have had some questions I was free to ask Mr. Dean to help me with them.
The quality of the pcb boards is very good. They are small but not to small – just about right for the guys that want to have very compact looking amplifier – in fact Mr. Dean has told me that he has invested (during his development time) arround 600 hours to develop the amplifier boards. Well, that is a lot of time – the result is in my opinion very, very good. I did not feel that there is any not normal problems while soldering the boards. I even took the money and solder everything on the boards with WBT silver solder (well – it can't make things worst). Also I have changed every electrolythic capacitor with Black Gate standard type capacitors I was having arround that were the same value as noted in schematic of the amp. I had the feeling that this might be better than use the capacitors provided in the kit. Resistors wer also changed to Dale RN55/60 resistors.... Well, Mr. Pass use them so I thought that they might be better to than the ones in the kit. Yes, yes, I know – I have changed a lot in this kit – but my opinion is that the change is only to a better not worst sound (I hope that I was not wrong).
Anyway, my current system at that time was Onix OA24 preamplifier, Onix SOAP 2 power supply for the amplifier and Onix OA601 power amplifier. The speakers were Rogers LS2a/2 studio monitors and I was having a nice diy dac and Pioneer transport. The system sounded good in my opinion but I wanted more of everything – to develop further so to say.
I decided to take some notes so that I can examine the burning in process so when I first turned the amplifier on I noted no power on thump – the amp was dead quiet like it is not working at all.. The sound was very fast and not sharp – it was faster than my Onix power amplifier. Also the sound was with more air and with huge sounstage. I was very impressed and also happy with the result.
After that first turn on my nightmare with burning in started... Since I don't have to much confidense in myself I did not want to leave the amplifier turned on the whole night...Also I don't have to much time to listen to music during the day so I was playing the amplifier 2-4 hours per day. After I few days of taking notes of what was happening with the sound I decided to stop doing it because the sound was varying a great deal – from simply astonishing to „worst than s..t“ – sorry.... After arround 100-150 hours of listening and sometimes fighting with myself – asking what was in my mind that i build this thing – the amplifier started to settle down and take the final form.
The end result of everything – my Onix is not playing any more (he is to be sold ), I have a tube preamplifier that I am working on right now based arround 12B4 tube (it is preety much in its final stage).... New speakers are also here, Fase Aria. Well, guys this little beauty oppened some new territories I did not hear at my home... The amplifier has a very big capacity – it is VERY emotional amplifier very gentle but this doesn't mean that it doesn't have bass or something – it knows how to make you FEEL the music – this little beauty has taught me to listen to music not the system (even when I was listening on my old speakers and Onix preamplifier) – I forgot to do that. Sometimes I am so satisfied with the feeling that I have in myself while listening to the music from Aria, Aksa, 12B4 combination that I don't want to move a muscle so that the feeling doesn't get scared and go away.... You know...
So I must ask You all, how much this feeling is worth to all of us..... Well, to me – a lot – I was looking for it for a long time... finally I found it – and for the reasonable price too.
I must thank to Mr. Dean for his help and ideas – he was allways having time to reply on my (sometimes stupid) questions. He was allways kind – I did not feel at any time that he was angry on somebody or something – was allways calm and helpfull. I want to thank him also for this amplifier that he has developed and no guys I don't have my wallet inside his company, I am telling this because I want to tell it; because I am happy and satisfied.
Best regards and happy diy
===========================================
Also now I have Lifeforce - smaller version.... and i am extremely happy with it so i wrote this for
===================================
Lifeforce
===================================
O.k. my fellow friends – it is me again with the new tribute related Aspen Amplifiers.... I was listening to this nice little amplifier from Mr. Hugh Dean (Aksa 55 Nirvana Plus edition) for few months – everything settled down – it was very nice to listen to it....My system loved this amplifier but than something happened – Mr. Dean told on his site that he has made an improvement on his fine product that is called Lifeforce....As a true audiophile a worm inside my head started to think – „well, what if this amplifier is even better than this one that i allready have – this one that i allready have is playing very, very nice – i am satisified – i am really, really, really, hmmm......“... Well, you can figure out the rest of the story.
I am listening now for a few months Lifeforce in my system. Boy this little thing is not little at all. It is a grown up monster. It has almost all good qualities of Aksa 55 N+ amplifier but amplified so to say it. It has much more headroom, soundstage is much bigger and better defined, bass is tighter and stronger. The only thing i would say is not better than Aksa 55N+ is treble. Treble is not so silky as it was with Aksa 55 N+, and the amplifier is not playing that emotional as his older sister. Also we can't say that something is wrong with treble – not at all it is very nice and even but not that, almost perfect, silky and emotional so to say it.
I think the best way to compare those two amplifiers would be to say that Aksa 55 N+ is like a woman, a lover, very emotional and with deep feelings – almost sensitive, and Lifeforce is like a friend, strong secure and extremely good sounding – both of them are good, really good but play diferently and are not in the same class (Lifeforce is better in my opinion).
My opinion is that Lifeforce is not that good as Aksa 55 N+ in expresing emotions but everything else is far better than Aksa 55 N+. So if you ask me is it worth aditional paying i would definitelly say – YES. This little things is a serious peace of equipment. It is so good that this amplifier is the last thing that will go out of my house for sure related soundequipment.
Here is a thought that pops inside my head – what would happen if we would use Lifeforce to feed our bass drivers and Aksa 55 N+ to feed our treble drivers. Oh boy....I can't think about it – to expensive for my wallet but we would have the best from both worlds.....feeling secure with tight and strong bass, extremely good soundstage and sweet and silky, emotional treble.... this would be perfect....my oh my,.....
Best regards
================================
===================================
Lifeforce
===================================
O.k. my fellow friends – it is me again with the new tribute related Aspen Amplifiers.... I was listening to this nice little amplifier from Mr. Hugh Dean (Aksa 55 Nirvana Plus edition) for few months – everything settled down – it was very nice to listen to it....My system loved this amplifier but than something happened – Mr. Dean told on his site that he has made an improvement on his fine product that is called Lifeforce....As a true audiophile a worm inside my head started to think – „well, what if this amplifier is even better than this one that i allready have – this one that i allready have is playing very, very nice – i am satisified – i am really, really, really, hmmm......“... Well, you can figure out the rest of the story.
I am listening now for a few months Lifeforce in my system. Boy this little thing is not little at all. It is a grown up monster. It has almost all good qualities of Aksa 55 N+ amplifier but amplified so to say it. It has much more headroom, soundstage is much bigger and better defined, bass is tighter and stronger. The only thing i would say is not better than Aksa 55N+ is treble. Treble is not so silky as it was with Aksa 55 N+, and the amplifier is not playing that emotional as his older sister. Also we can't say that something is wrong with treble – not at all it is very nice and even but not that, almost perfect, silky and emotional so to say it.
I think the best way to compare those two amplifiers would be to say that Aksa 55 N+ is like a woman, a lover, very emotional and with deep feelings – almost sensitive, and Lifeforce is like a friend, strong secure and extremely good sounding – both of them are good, really good but play diferently and are not in the same class (Lifeforce is better in my opinion).
My opinion is that Lifeforce is not that good as Aksa 55 N+ in expresing emotions but everything else is far better than Aksa 55 N+. So if you ask me is it worth aditional paying i would definitelly say – YES. This little things is a serious peace of equipment. It is so good that this amplifier is the last thing that will go out of my house for sure related soundequipment.
Here is a thought that pops inside my head – what would happen if we would use Lifeforce to feed our bass drivers and Aksa 55 N+ to feed our treble drivers. Oh boy....I can't think about it – to expensive for my wallet but we would have the best from both worlds.....feeling secure with tight and strong bass, extremely good soundstage and sweet and silky, emotional treble.... this would be perfect....my oh my,.....
Best regards
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