PBA - Pre-biased Opamp
The PBA board is a direct replacement for a dual opamp in a DIP8 package. It provides two channels of pure low-distortion Class A voltage amplification. The PBA is offered pre-populated with a great sounding low-noise JFET dual audio opamp, or as a bare board that can fit any dual SOIC8 opamp with a standard pinout.
Choose between a Sound Plus OPA1652A, or an absolute winner OPA2604A for a great sound. You may also get a bare board for an opamp of your choice.