XM1 IC1 BurrBrown OPA2134PA IC2,3 BurrBrown OPA2134PA XM9 IC1,2 BurrBrown OPA2134PA IC3,4 BurrBrown OPA2134PA XM16 IC1,2,3,4 BurrBrown OPA2134PA IC5,6 BurrBrown OPA2134PA WM8 IC1,2,3,4 BurrBrown OPA2134PA
All packages are 8 pin DIP. There are many other high performance op-amps available from many vendors. Please consult factory for compatibility information.