Dual opamp biasing

As I wrote in an earlier post, I’m thinking of raising the Bias for whatever opamp I decide to use in my headphone amplifier.

With a supply of 15Vdc, two 2,67Kohm resistors(R1 and R2) should give about 5,6mA bias current.

Since I might want to try the bias mod with different opamps or use the same opamps without the bias mod, I’ll solder the resistors to a DIP8-socket to put between the socket on the PCB and the opamp/opamps on adapter.


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