Posted by FredT [ 24.175.116.95 ] on September 09, 2005 at 17:43:27:
In Reply to: It's Singing In My System posted by FredT on September 07, 2005 at 08:53:40:
With about 40 hours running time I decided to compare it to my Onix XCD-88 player and my Scott Nixon tube dac. So far the Scott Nixon and the Onix are tied, with the Lite DAC in third place. I really do need to give this DAC another 50 hours before forming any conclusions, but at this point it sounds just a bit opaque compared to the other two, which sound transparent in comparison.
I did rig it briefly as a non oversampling dac just to hear the difference, and the opacity/harshness was gone but so was the upper treble. I did this mod by attaching jumper cables to the leads of R35 and R36, tapping into the output of the dacs before the op amps. The positive lead from each resistor was connected through a 3uF Northcreek cap for DC isolation, then into the interconnect to the preamp. I made no other changes such as removing the op amps.
I would appreciate it if someone who knows more about dac design would look at the link below and tell me if these resistors are the correct place to tap into the dac chip outputs. There's a link to the schematic in this article.
http://www.audiodesignguide.com/DAC/dac5.html
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