Meticulously handmade to order in New Haven, Connecticut, the 323 Discrete Mic / Instrument Preamplifier for 500 Series is powered by an original and proprietary 9-transistor Amplifier and boasts 3 best in class Jensen Transformers. Switchable inputs of Microphone or Hi-Z instrument (balanced or unbalanced). Only the finest components are utilized in this high end piece. Vintage style metal can transistors are used for the audio signal while modern surface mount semiconductors handle the electrical supply signal (current sources).


Switchable SHINE circuit adds an extra layer of discrete 323 amplification, an R-C boost at 10k and changes the Jensen output transformer from 1:1 to 1:2. Adds a unique blend of girth, top end and subtle harmonic distortion : SHINE!


  • Discrete, Original Design 
  • Jensen Transformers (3)
  • Hi-Z D.I. Input (Guitar, Bass, Synth, Drum Machine)
  • 8 LED Output Meter
  • 20dB Pad
  • Polarity Reversal
  • 48V Phantom Power



323 Discrete Mic / Instrument Preamp

  • Please allow 2-3 weeks as I make these by hand!

  • Handmade in New Haven, Connecticut.

© 2019 Mount Cyanide. 

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