Discrete Tube-FET microphone preamp

Low noise discrete microphone preamp

500 series microphone preamp

Microphone preamp with high pass filter

Preamp for ribbon and dynamic microphones

Preamp with germanium harmonics

 Preamp for condenser microphones

Preamp for live and broadcast application

Attenuator for all types of microphones

Low THD phantom power supply

Phantom powered instrument preamp

Instrument preamp for piezo pickups