The Lola Mic Pre requires two identical op-amps. You have four op-amp options below, you will receive two of the op-amp you select.
Option One: DIY-990
This is our DIY version of the famed 990 op-amp designed to the exact specifications of the Jensen AES paper.
Option Two: JE-990
This is our fully built and tested version of the famed 990 op-amp built to the exact specifications of the Jensen AES paper.
Option Three: BA512
This is based on the legendary and rare Neve BA512 op-amp. Very low noise and well suited to the 1073 style input transformer used in the Lola. The BA512 is still very fast, but it's a little less "HiFi" than a 990. This slightly slower op-amp will trade a little detail for character. Think of the 990 like a super high frame rate and the BA512 a moody slow cinema.
Option Four: No Op-amps
Supply your own 2520 footprint op-amps.
The JE-990 and DIY-990 are sonically identical, the JE-990 arrives assembled and tested.