dalethorn 0 Report post Posted February 11, 2012 Received my JDS Lab O2 couple days ago. Have been running in. First impression is pretty good. Lots of drive, sounds "big" if you get what I mean . Don't even need to pass 11 o'clock on the vol knob on my LCD2s at normal gain. Rather analytical, can be too bright on certain recordings. I'm getting very bad distortion when I switch to high gain even at low volume. Not sure if it's the opamp. Will roll some opamp and see. That's bad luck - I didn't get any distortion or problems on high gain, driving Senn 800's and other headphones. Share this post Link to post Share on other sites
Maniacal71 0 Report post Posted February 11, 2012 (edited) updates for the o2 GB here and here Bro JMWrecks, is my order confirmed? It could be the headphones, which headphones are you using with the high gain? anyway try to burn in on high. Edited February 11, 2012 by Maniacal71 Share this post Link to post Share on other sites
kwhv 0 Report post Posted February 11, 2012 I tried it with different headphones it's still the same. Share this post Link to post Share on other sites
Maniacal71 0 Report post Posted February 11, 2012 Probably some grounding issues, open that thing up and see where the buzz is coming from Share this post Link to post Share on other sites
nekatrall 0 Report post Posted February 11, 2012 if according to the BOM of nwavguy ur high gain resistors could be the ones causing the distortion i have no probs on mine and im using 8.5x gain Share this post Link to post Share on other sites
nekatrall 0 Report post Posted February 16, 2012 changed to low power opamps today on the first listen slightly more noise but not tt significant but more importantly there bass seems to increase significantly Share this post Link to post Share on other sites