I have a couple of newbie questions if you do not mind me asking
After turning on the O2 amp, should I delay plugging in the headphone cable until the amp "warms up"?
Also, should the O2 be placed on top of a cover to prevent damage to the wooden desktop it is on? I have heard that amps can damage wooden desktops due to the amount of heat generated.
This is my first headphone amp and I have started using it tonight. So far I have noticed that the sibilance of the DT-990s has been greatly reduced. I like that very much. I wonder if it would be adequate for a pair of AKG k712s or similar models.
Can I ask you what DAC you're using?