Here is the Rolls Royce of operational amplifiers for the audio upgrade, the Analog Device AD8620 will offer you sound very dynamic, deep bass, an ultra low noise, ultra-wide bandwidth and harmonic distortion rate rarely equaled ...

It is ideal for replacing the original op-amp for hifi and pro audio equipment such as Behringer, Mackie, etc. ... Warned however that the maximum voltage of + -13 V ...

Features:

http://www.analog.com/UploadedFiles/Data_Sheets/31592213475495AD8610_20_d.pdf