Originally Posted by greenarrow /img/forum/go_quote.gif Just got myself a D2 Viper. Just how good is this compare to the D3? I'm going to change the opamps soon.
Looks like I missed the D3 writeup.
With LM4562 in the main socket and LM6172 in the ground it sounds similar to the D3 and Pico. Battery life is the best at 17 hours with this. This was god with full size cans and IEM.
With LTC6241HV in the main socket and LMH6655 (or was it the 6622) it sounds similar to the Predator. Odly I was getting 7 hours out of the battery with this, which made no sense. Good with IEM and full size cans.
With LM6172 in the main socket and THS4032 in the ground it sounds between the 2MOVE and Predator. Warm sounding with loads of power with full size cans, great bass with IEM. Battery life was just under 14 hours with this. Swapping those two opamps to THS4032 in the main socket with LM6172 in the ground has a similar sound to the 1st setup I listed but not quite as good with full size phones as it is with IEM.
It also sounds good with an LMH6622 in the main or ground, but not both. It's too warm and forward with two LM6172 as well.
D2 Viper is an excellent amp and DAC, just not with the stock opamps. See my review which is linked in my public profile "about me" (cut and paste).
It is a very good match for IE8 for my main criteria - imaging and soundstage. The D3 is an excellent all around DAC/Amp - long battery life, flexible DAC, line out, and above all excellent SQ for the money.
BTW, got no RF issue here. My Logitech speakers right next to the D3 are affected more than the D3 with iPhone close by.
I finally got out the D3 tonight...had the ipod with silvercab pro LOD and my 2500s...I had a variety of source files, always rip at 320 guys, man what a nice thick sound...that little amp continues to impress.
Just a word of wisdom here, for home listening, especially when you are next you your partner, get some closed phones!!! As I couldnt get more than a few songs before I had to put her away.