Nano Metal Muff
Electro-Harmonix Discontinued Released 2021

Nano Metal Muff

The Nano Metal Muff is a compact analog high-gain distortion pedal with a three-band EQ and a built-in noise gate. It is aimed at guitarists who want heavy metal tones in a pedalboard-friendly enclosure.

  • Analog high-gain distortion for metal tones
  • Three-band EQ: bass ±14 dB, mid ±15 dB, treble ±10 dB
  • Noise gate with threshold knob and indicator LED
  • Buffered bypass
  • 9V battery included; optional 9.6VDC-200mA adapter
  • Compact enclosure, 4.5 x 2.75 x 2.1 in
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Description

The Nano Metal Muff combines a high-gain distortion circuit with a wide-range EQ section, voiced for heavy metal playing. Volume and distortion knobs set the output level and the amount of input gain and saturation, while bass, mid and treble controls give cut and boost of up to 14 dB, 15 dB and 10 dB respectively.

A noise gate with its own threshold knob mutes the output when the incoming signal falls below the set level, which removes hum between phrases. A dedicated LED shows when the gate is muting the output, and turning the gate knob fully counter-clockwise disables it.

The pedal has a quarter-inch input and output, with a 1MΩ input impedance and a 600Ω output impedance. It uses buffered bypass, so the output stays connected to the input through a buffer when the effect is off. Power comes from a 9V battery that is included, or from an optional 9.6VDC-200mA adapter sold separately.

Video

Specifications

Brand
Electro-Harmonix
Model
Nano Metal Muff
Category
Effects and pedals

Audio

Circuit
Analog
Audio
Mono
Bypass
Buffered Bypass
Bass control
+/- 14dB of cut or boost
Mid control
+/- 15dB of cut or boost
Treble control
+/- 10dB of cut or boost

Controls

Knobs
Volume, Gate, Distortion, Treble, Mid, Bass
Footswitch
Bypass footswitch with status LED
Gate indicator
LED shows when the output signal is muted

Inputs

Input jack
¼"
Input impedance
1MΩ

Outputs

Output jack
¼"
Output impedance
600Ω

Power

Power supply
9V battery included (optional 9.6VDC-200mA power adapter not included)
Current draw
24 mA

Physical

Dimensions (in)
4.5 x 2.75 x 2.1

In the box

Battery
9V battery included

Data: ehx.com; photos: Electro-Harmonix product page · updated 2026-10-13 · Found a mistake? Write to us