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Classic® 20 MH Mini Amp Head

SKU: 03614150


The Classic 20 MH delivers the impact of all-tube amplification in a versatile 2-channel mini head. With the genuine tube tone revered by blues, rock, and country players for decades, the Classic 20 MH is primed for stage and studio.

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Revered by blues, country and rock players alike, Peavey Classic amps span the tonal landscape from vintage to contemporary with ease, and the Classic 20 MH provides that tone in a highly portable package.

The all-tube, 20-Watt Classic 20 MH is powered by two EL84 power tubes and 3 12AX7/ECC83 preamp tubes. It has two channels that follow the same gain structure and voicing of the Peavey Classic series amps for pure and versatile tone. The channels share a three-band EQ, lush reverb and an effects loop. The channels, effects loop and reverb are all footswitchable.

Peavey's TSI tube monitoring alerts players of power tube status, and in the event of a necessary tube replacement, identifies which tube needs to be replaced. Rear panel features such as a Microphone Simulated Direct Interface (MSDI) with XLR output and USB out, speaker defeat switch and 3 position power attenuator switch make the Classic 20 MH mini head perfect for studio environments.


  • Attenuator switch for 20 watts, 5 watts or 1 watt output power
  • Two EL84 power tubes and three 12AX7/ECC83 preamp tubes
  • Two footswitchable channels with 3-band EQ
  • Footswitchable global volume boost, reverb, and effects loop
  • Footswitch included
  • T.S.I.™ (Tube Status Indication) circuit
  • MSDI™ Output with XLR and ground lift switch
  • USB Output
  • Speaker defeat switch
  • Headphone output.
  • Footswitch included
  • Impedance switch for 16 or 8 ohm cabinets
  • Packed Weight: 20.51 lb (9.3 kg)
  • Packed Length: 19.375" (49.21 cm)
  • Packed Width: 13.25" (33.66 cm)
  • Packed Height: 12.375" (31.43 cm)

Additional information

Weight 9.3 kg
Dimensions 19.375 × 13.25 × 12.375 cm
California Proposition 65 Warning

If you have questions concerning product operation, support or warranty, contact one of our Customer Support Representatives by email at [email protected], or try using the Peavey Forums.

We can be reached by phone at 877-732-8391 (toll free in the US).

Unlimited Sonic Potential

Instead of trying to re-create the character of a specific vintage amplifier, the Classic 20 MH is a harmonically rich foundation to shape your own signature sounds with genuine tube tenacity.

Genuine Tube Tone

Nothing beats the punch and impact of genuine tube tone. The Classic 20 MH packs three 12AX7/ECC83 preamp tubes and a pair of EL84 power tubes for muscular tone with distinctive harmonic richness.

Go Direct, No Mic Needed

You don’t need to mic up the Classic 20 MH to send great tone to a PA system or recording interface. The XLR and USB outputs feature microphone emulation so you can go direct without compromising your tone.

Built-in Power Attenuation

The Classic 20 MH is ready to adapt your headroom for practically any stage or studio application, with onboard power attenuation that lets you select from 20-watt, 5-watt, or even 1-watt operation.

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