LM1875 Headphone amp

[daArry]

Hey,

I want to start work on the master/monitoring section of the console I'm reworking and was wondering thoughts on this LM1875 ckt for the headphone amp:

http://sound.westhost.com/p30c-f4.gif

Seems simple enough. I'll be using my Sennheiser HD25SP's for the phones...Nominal impedance rated at 85 ohms...

Anything I need to take into account?

Cheers!

Oh and btw, can I just stick say a dual 25K log pot on the input for level control?

 

[mcs]

[quote author="daArry"]Anything I need to take into account?[/quote]
Read the National data sheet and any application notes. They often contain a lot of useful info.

Oh and btw, can I just stick say a dual 25K log pot on the input for level control?

Replace R2 with a pot?

Best regards,

Mikkel C. Simonsen