[GiantAssPanda]

Any recommendations regarding the best gain settings for Sennheiser HD598? The standard settings are 2.5x/6.5x. Are they good or should I use custom ones?
 
Thanks in advance!

 

[blse59]

1x and 3.5x gain settings are the best gain settings to have on the O2 when feeding it from a dac like the ODAC. You'll probably leave it in 1x gain 99% of the time. I have yet to find a reason to use 3.5x gain on my O2. 1x gain has much more than enough to power the majority of headphones.

 

[patchoncas]

Those headphones are low impedance and high sensitivity, so you should go with low gain settings, maybe even 1x and using the amp as a simple current buffer.

 

[inseconds99]

What about if you paired the amp with say the HD 700's? Would you still get the 1x and 3.5x's?

 

[TheeeChosenOne]

What gain options for the HD650?...

 

[blse59]

  What about if you paired the amp with say the HD 700's? Would you still get the 1x and 3.5x's?

Yep. I don't have the 700's but the specs say it's only 150 ohms? Looks like it's even easier to drive than the 650/600.
 
 

  What gain options for the HD650?...

1x and 3.5x. I struggled with this choice too before buying but after doing research and asking around I see this is the best choice.

 

[GiantAssPanda]

So got my O2 amp&dac today and the gain settings were spot on for my HD598. Thanks!
 
Also, what would be the best settings for the amp in the audio device settings? 24bit/44100hz?