Hey, Writing to say the OPA1678 from TI is a pretty nice little amp. Low noise, low distortion, low bias current, low cost. Is a dual; OPA1679 is a quad. SMT only, sad to say, but that be the times we live in. http://www.ti.com/lit/ds/symlink/opa1678.pdf -- --Tim Ressel Circuit Abbey timr at circuitabbey.com