Better than DIR9001?
Wow! Their are hundreds of posters who can try DIR9001 vs CS8416, or, CS8416 with upsampling vs no upsampling side by side who would strongly beg to differ with you. I also upsample my AK4395 modified DEQ2496 with an SRC2496 and it sounds better at 88.2. But still not quite as good as having a DIR9001 right on the board.
Wow! Their are hundreds of posters who can try DIR9001 vs CS8416, or, CS8416 with upsampling vs no upsampling side by side who would strongly beg to differ with you. I also upsample my AK4395 modified DEQ2496 with an SRC2496 and it sounds better at 88.2. But still not quite as good as having a DIR9001 right on the board.
If it aint broke dont fix it. OK.
When you are on to a winning combination it should not be mucked around with.So you have this DAC?
I was asked for some photos of what I have done.
You can see the 22000uf capacitors. The bridge rectifiers have been removed from the board and I have mounted different bridge rectifiers off the board before the caps. It should be self explanatory. You can also see the Silmics decouping the op-amp.....
You can see the 22000uf capacitors. The bridge rectifiers have been removed from the board and I have mounted different bridge rectifiers off the board before the caps. It should be self explanatory. You can also see the Silmics decouping the op-amp.....
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If it aint broke dont fix it. OK.
So you have this DAC?
I have 2 receivers at present WM8804 and CS8416 so I could switch between them, the WM8804 was better sounding to me, but using CS8416 because it has multiple inputs.
need to try the WM8805.
"So you have this DAC"
I've ordered one.
Try different IC regulators
I would like to suggest that developer evangelion1999 and everyone that gets the PCB look into trying different IC linear regulators.
I have experience with changing analog and digital +5V TO-220 types in a Behringer SRC2496. I unsoldered the reg chips on board and soldered in 3 pins of a cut off DIPS socket. On the replacement T-220 chips I soldered on the pins cut off of a DIP header.
In my SRC2496 I have replaced digital section caps with Panasonic FC versions and am taking the analog output straight from the AK4393 output pins into a Jensen transformer. Digital input transformers were replaced by Newava S2083. I get the better sound by using the external clock input on this device which is fed by Antelope Audio OCX developing the wordclock off of a QA-550 SD Card SPDIF source.
With this configuration I can clearly hear significant differences in the IC regs with the National LM340T5 being my first choice. The rest in rough order from best to worst are: LM2940T, LM323T, JRC 78M05A, MCC 7805CT, STM L7805, ua7805c, ue ML7805A (original Behringer part).
I have recently ordered evangelion1999's board and will try the same thing, though the 3V regs are not TO-220. I will probably drill the board to mount the DIP sockets here. I am really keen to hear if someone finds shunt regs ( maybe Hynes, or Twisted Pear) to be better than top off shelf series IC regs. At typical prices of less than $2 each so far the IC regs certainly are cheap to try in comparison.
I would like to suggest that developer evangelion1999 and everyone that gets the PCB look into trying different IC linear regulators.
I have experience with changing analog and digital +5V TO-220 types in a Behringer SRC2496. I unsoldered the reg chips on board and soldered in 3 pins of a cut off DIPS socket. On the replacement T-220 chips I soldered on the pins cut off of a DIP header.
In my SRC2496 I have replaced digital section caps with Panasonic FC versions and am taking the analog output straight from the AK4393 output pins into a Jensen transformer. Digital input transformers were replaced by Newava S2083. I get the better sound by using the external clock input on this device which is fed by Antelope Audio OCX developing the wordclock off of a QA-550 SD Card SPDIF source.
With this configuration I can clearly hear significant differences in the IC regs with the National LM340T5 being my first choice. The rest in rough order from best to worst are: LM2940T, LM323T, JRC 78M05A, MCC 7805CT, STM L7805, ua7805c, ue ML7805A (original Behringer part).
I have recently ordered evangelion1999's board and will try the same thing, though the 3V regs are not TO-220. I will probably drill the board to mount the DIP sockets here. I am really keen to hear if someone finds shunt regs ( maybe Hynes, or Twisted Pear) to be better than top off shelf series IC regs. At typical prices of less than $2 each so far the IC regs certainly are cheap to try in comparison.
An interesting comparison of voltage regulators can be found here:
http://www.diyaudio.com/forums/parts/127414-lm317-vs-7805-19-different-ics-compared.html
Here is another comparison.
http://hifiduino.wordpress.com/2011/03/29/new-breed-of-ultra-low-noise-regulators/
http://www.diyaudio.com/forums/parts/127414-lm317-vs-7805-19-different-ics-compared.html
Here is another comparison.
http://hifiduino.wordpress.com/2011/03/29/new-breed-of-ultra-low-noise-regulators/
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Hot rod version
I removed the ak4393 and replaced it with ak4395,the receiver is now running on 5volts after changing lm1117 3.3v to 5v version. All electrolytics have been replaced with sanyo oscon and all coupling caps with tantalums. Power supply has been upgraded to 5600uf and 1800uf panasonic fc. Opamps have been bypassed and output is directly off dac through 2.2uf mkp's to the grids of two Tesla gold pin e88cc tubes configured in an SRPP arrangement. This little dac is an unbelievable performer excellent detail,smoothness,bass slam ect....
I removed the ak4393 and replaced it with ak4395,the receiver is now running on 5volts after changing lm1117 3.3v to 5v version. All electrolytics have been replaced with sanyo oscon and all coupling caps with tantalums. Power supply has been upgraded to 5600uf and 1800uf panasonic fc. Opamps have been bypassed and output is directly off dac through 2.2uf mkp's to the grids of two Tesla gold pin e88cc tubes configured in an SRPP arrangement. This little dac is an unbelievable performer excellent detail,smoothness,bass slam ect....
