[pHEnomIC]

I have an audio-gd compass that i use with some denon d5000's.  
 
I believe it has the earth op amp in it.
 
I really like this amp and plan on keeping it.  I figure it might be fun to do some customization to it. 
 
Should I buy the opamps?
 
I was thinking the sun and moon versions.
 
Also I know they have a v.2 of the sun and moon, any input?
 
Also, cant these things be used on other amps as well?

 

[walfredo]

FWIW, I have the three op-amps and like the earth one best.  I'm not sure I have the v.2 of the op-amps, though.
 
[]s
Walfredo

 

[Mad Lust Envy]

I have Moon and can't find a huge enough difference between it and the stock op-amp. The ACSS connection is slightly better than both. I'd just stick to the ACSS connection, assuming the Compass uses it. i use the NFB 5.

I'd probably get the Earth to keep it as close to ACSS as possible. But frankly, I'd fail blind A/B tests from ACSS to either op-amp.