hmm space for SEN IV? maybe JUST, the IV itself is quite small, though needs to take AVCC/2 for bias. but the many batteries (8 x 9v, or many more smaller) plus charging arrangements, I feel it would take a pretty clean looking build and make it cluttered, but yes there probably is room. its Patrick's Jfet IV needs 4 x 18v+ floating power supplies
here
here
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Fully assembled ones would have to wait for a while until I get versions with IV and other functions integrated so that all models could share the same stencil and setup costs ~$400 (automatic assy in a fab house). Manual assembly can be a pain especially doing it over and over again with all the small parts.
Web Pricing
Hi Folks,
As you have noticed, all web prices are in USD and orders processed by PayPal. Their low fee services and security have made it attractive for DIYers. However, recent changes to their policies have seen them steadily increasing fees and now with cross border fees. So far I have been absorbing all the fees to make it easier for you all but it is getting difficult keep on doing it. They have also started to dig into exchanges rates as well. I found today PayPal 1 USD = 0.93 Australian (AUD) when in actual fact the AUD is much stronger at 1.04 USD! Hope this is not an error.
Anyway, I will be changing all web prices to AUD over the next few days and you may have to work out the amount in your own currencies. I may continue to absorb the fees for a while. Sorry for the inconvenience.
Hi Folks,
As you have noticed, all web prices are in USD and orders processed by PayPal. Their low fee services and security have made it attractive for DIYers. However, recent changes to their policies have seen them steadily increasing fees and now with cross border fees. So far I have been absorbing all the fees to make it easier for you all but it is getting difficult keep on doing it. They have also started to dig into exchanges rates as well. I found today PayPal 1 USD = 0.93 Australian (AUD) when in actual fact the AUD is much stronger at 1.04 USD! Hope this is not an error.
Anyway, I will be changing all web prices to AUD over the next few days and you may have to work out the amount in your own currencies. I may continue to absorb the fees for a while. Sorry for the inconvenience.
Acko,
their exchange rate was always exuberant. On the sending side, buyer have option to select the exchange rate - paypal or the one from your bank, the one you are using the card from. I always selected that option. Do not know how is on the seller or money recipient side, but in your case that would not matter any more. It was always funny to me when you select your bank rate, paypal will come up with warnings that you might be paying more, hahaha.
acko, I dont know that you have made a mistake with writing that out, or not, no doubt they have been taking 2 or 3 slices of the pie lately and have been expensive for ages, I eat the PP fees too, I think its actually a condition....
especially with the AUD being so strong the conversions have been really bad, then they get the fees too and then if you are drawing from a bank you will often get a fee for the transaction, but your math above is a bit confusing to me.
is 1USD = 0.93AUD that translates to 1AUD = 1.0752... better than 1.04
thanks for the tip on the interstate fees! wth! why? whats the bloody excuse for that? it costs them nothing and there is no interstate tax
especially with the AUD being so strong the conversions have been really bad, then they get the fees too and then if you are drawing from a bank you will often get a fee for the transaction, but your math above is a bit confusing to me.
is 1USD = 0.93AUD that translates to 1AUD = 1.0752... better than 1.04
thanks for the tip on the interstate fees! wth! why? whats the bloody excuse for that? it costs them nothing and there is no interstate tax
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Yes, Qusp you are right my mistake actually. Just the reeling Aussie dollar and the seller transaction fee increases! Thank you very much.
Don't know how I got it all mixed up
You may find the SEN I/V thread here.
Others and myself have found that replacing the Legato (even tweaked extensively) with the SEN I/V is the single best upgrade you can do to your ES9018. The circuit is exceedingly simple, but require 4 floating supplies if run in a balanced configuration (highly recommended). The high number of supplies seems to scare people of from trying this circuit, but if the ultimate in sound is what you are here for then it is an absolute must.
Especially for somebody like you who well know the superior quality of well implemented JFETs for audio.
I don't know anybody who has turned back
Super Transport AKT
Still rearranging the design. Ian's FIFO-Clock on the way also. Will be posting some details soon ...
Acko, curious minds in Brisbane want to know more about this AKT!
Rumours had been milling around via email, very interested to see what you guys come up with!
Still rearranging the design. Ian's FIFO-Clock on the way also. Will be posting some details soon ...
Very interresting. If the community allow you to build a "finished" solution based on those designs then I know that I am _very_ interrested indeed. Too complex for me to try to build on my own.
Edit: Acko; let me know if you want / allow me to create 3d models of your components. Could be nice to allow custom case work.
Edit: Acko; let me know if you want / allow me to create 3d models of your components. Could be nice to allow custom case work.
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Acko, I'm just stirring the pot there mate.
I think this will be a VERY interesting design indeed. I am watching with interest as things develop. I am not in a position that allows the financial commitment of a fully tricked out AKD12P design at the moment, so I am just watching mostly, for now.I suspect you aren't alone there!
You may find the SEN I/V thread here.
Others and myself have found that replacing the Legato (even tweaked extensively) with the SEN I/V is the single best upgrade you can do to your ES9018. The circuit is exceedingly simple, but require 4 floating supplies if run in a balanced configuration (highly recommended). The high number of supplies seems to scare people of from trying this circuit, but if the ultimate in sound is what you are here for then it is an absolute must.
Especially for somebody like you who well know the superior quality of well implemented JFETs for audio.
I don't know anybody who has turned back
NicMac,
thank you for the info. Interestingly, when I checked SEN I/V I found a lots of similarity with the balanced jFet buffer I am using. Essentially similar building blocks. In my system I have Legato and after that balanced jFet buffer with Lundahl transformer. That means that I could eliminate Legato and modify my buffer to serve as I/V converter as well. Maybe. I will check with Dr. Zen Mod to see what he thinks.
You are correct, honestly did not think about that one, but still I believe I do have a room for that if I pull out Legato. I am bringing anyways two channels of power supplies from two Shuntys, so at least that is not an issue, but what maybe that is not needed since batteries are also required... Need to think more about it, but for sure would like to test and observe the difference. Will be interesting.
DSD Connections
Hi Bunpei,
Thank you very much for your continued support!
I am actually preparing to test the SDTrans384. The Turbo Clock is directly compatible, so minimal mods required. But first I need to get an interface board done that will take the header outputs of the SDTrans and fan out to w.fl coax to match the AKD12 Digital Inputs.
This is almost ready but I have noticed that when physical connections are arranged for DSD from SDTrans, the DAC inputs will not be compatible with I2S (stereo mode). This means I cannot play pcm audio on a DAC setup for DSD and vice versa, unless the digital inputs are physically reconnected to match. The line of contention is LRCK (of I2S) that becomes DSD1 and also the way the DAC cells are connected to the inputs.
Not sure if I am getting confused with all the signal lines but any help is most appreciated.
Hi Bunpei,
Thank you very much for your continued support!
I am actually preparing to test the SDTrans384. The Turbo Clock is directly compatible, so minimal mods required. But first I need to get an interface board done that will take the header outputs of the SDTrans and fan out to w.fl coax to match the AKD12 Digital Inputs.
This is almost ready but I have noticed that when physical connections are arranged for DSD from SDTrans, the DAC inputs will not be compatible with I2S (stereo mode). This means I cannot play pcm audio on a DAC setup for DSD and vice versa, unless the digital inputs are physically reconnected to match. The line of contention is LRCK (of I2S) that becomes DSD1 and also the way the DAC cells are connected to the inputs.
Not sure if I am getting confused with all the signal lines but any help is most appreciated.
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