QUOTE(LittleGhost @ Jan 31 2009, 01:29 PM)
Not necessarily.
Read the recent review from Majkel? He ranked the AD797 better than the OPAs from Audio-GD.
HDAMs are kinda limited in some area due to space constrains. You cant lay additional parts for it. The AD797 is also an improved folded cascode topology which gives it insanely low distortion. (tip: the extra transistor on the floating mirror ) If you want to beat that you'll have to lay the entire amplifier circuit down instead and use as much performance enhancing designs as possible.
I just read the data sheet. Read the recent review from Majkel? He ranked the AD797 better than the OPAs from Audio-GD.
HDAMs are kinda limited in some area due to space constrains. You cant lay additional parts for it. The AD797 is also an improved folded cascode topology which gives it insanely low distortion. (tip: the extra transistor on the floating mirror ) If you want to beat that you'll have to lay the entire amplifier circuit down instead and use as much performance enhancing designs as possible.
Reminds me so much of the LM4562. Both are BJT inputs, have great performance and voltage range, but are really b****es to work with.