Check them out:
Fink Analog Audio CS2-FA
api audio 527
Barefoot Sound MicroMain 35
Great River Electronics 32EQ
KuSH Audio Clarity Control
Pete´s Place Audio Electrodyne 501
Pete´s Place Audio Electrodyne 511
Retro Instruments 2A3
Shadow Hills Industries Vandergraph
Helios Electronics Type 69-500
Inward Connections OPT1A
More units will be added.
