Muffsy Phono Kits
Hifi Preamps for your Record Player

Muffsy Phono Kits offers record player preamplifiers for all Moving Coil, Moving Iron and Moving Magnet cartridges.

Complete DIY Hifi Phono Kits

Enjoy the experience of having built your own hifi equipment with kits that are designed for you to succeed whether you are a beginner or a pro.


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Buy the Muffsy Phono Kits

The Muffsy kits are available on Tindie, with the Muffsy Phono Preamp and the Muffsy MC Head Amp starting at $89.


Complete your build with the power supply and the back panel. All kits come with every necessary component, except the enclosure and AC wall adapter.


Gerbers are available for free if you want to make your own PCBs.

Detailed Build Instructions

With the easy to follow, step-by-step documentation, anyone can build these kits.

Illustrated Construction Guide

Have a look at how to build the Muffsy Phono Preamp or the Muffsy MC Head Amp before you decide if you want to make one yourself.

Muffsy Phono Preamp Specifications:

Total Harmonic Distortion: 0.00081%
Total Harmonic Distortion + Noise: 0.01935%
Signal to Noise Ratio: 82.3 dB (0 dBV output)
Intermodulation Distortion: 0.0195% (ITU-R)

Crosstalk: -102 dB

Dynamic Range: > 110 dB (THD+N < 1%)

RIAA Compliance: +/- 0.15 dB (20-20.000 Hz)

RIAA Equalization: Passive

Gain at 1 kHz: 32-43 dB, in four steps

Input Impedance: 17k-150k ohm, in fifteen steps

Input Capacitance: Optional

PCB Size: 84 x 56 mm

Muffsy MC Head Amp Specifications:

Total Harmonic Distortion: < 0.1%

Total Harmonic Distortion + Noise: < 0.1%

Signal to Noise Ratio: 71.8 dB (rel to 0.5 mV input)

Intermodulation Distortion: 0.001% (ITU-R)

Dynamic Range: > 110 dB (rel to 0 dBV)

Frequency Response: +0 / -0.1 dB (20-20.000 Hz)

Gain: 24.6 dB

Input Impedance: 50-300 ohm, in four steps

PCB Size: 84 x 59.4 mm

Measurements at 1 kHz, 0 dBV output, if not stated otherwise

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