MoFi Electronics MasterPhono MM/MC Phono Stage

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A fully discrete phonostage with balanced input and output, switchable gain, and 10-position loading adjustment. 

Call or Email 855-991-8181 for availability  - 

The MoFi Electronics MasterPhono is a high-quality, discrete phono amplifier designed by renowned sound engineer Peter Madnick for unmatched flexibility and silent operation.

Featuring fully balanced input/output, a shielded internal power supply, and programmable resistance and gain, MasterPhono delivers an accessible, high-performance experience without artificial coloration, staying true to the original master tape sound.

The MasterPhono has three inputs, allowing you to use three tonearms, whether on one table or separate ones. One of those inputs is a current or transimpedance circuit, allowing the use of low impedance MC cartridges. 


  • Fully discrete from input to output
  • Single-ended RCA and Balanced XLR output
  • Switchable gain 
  • Passive RIAA using NOS polystyrene and polypropylene film/foil capacitors
  • Standard signal input via RCA & XLR (Voltage Input)
  • 10 position loading adjustment, including "Custom" via RCA plug
  • "Current input" via RCA or XLR for low source-impedance phono cartridges
  • Stereo/mono switch, High pass filter switch
  • Left and Right meters for output monitoring and calibration purposes
  • Cascaded voltage regulation stages for lowest noise
  • Dual-chassis construction isolates power supply and audio circuits
  • separately
  • Software upgradable via USB to add new updates and features


Input: Current mode and voltage mode, balanced and unbalanced

Gain (MM/MC): 40, 50, 60, 70 db

Loading: 15, 30, 50, 75 100, 500, 1K, 10K ohm

Output Impedance
Balanced: 230 ohm
Unbalanced: 115 ohm

Max Output (@1% THD): 10 V RMS

Dimensions: 17.5” x 3.5” x 15.75”

Weight: 15 lb.

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