$899.99 USD
The Peavey Classic 20 MH all-tube 20-watt mini head features the legendary warm tones that have made Peavey’s Classic Series a must-have for guitar players of all styles. Its versatile and dynamic capabilities allow musicians to experiment with a wide range of styles and techniques, ensuring that each note resonates with extraordinary clarity and depth. The smooth, rich tones of the Peavey Classic 20 MH are a perfect complement to any artist looking to push the boundaries of their craft.
Since 1973, Peavey Classic Series guitar amps have been a trusted choice for professional musicians in every genre. The Classic Series is renowned for its exceptional quality and sound. Developed by founder Hartley Peavey, the Classic Series epitomizes Peavey's commitment to uncompromising quality, rich tones, and extraordinary value.
For Country, Jazz, Blues, and Rock n’ Roll players, this compact powerhouse delivers exceptional warmth and depth, making it the ultimate choice for guitarists seeking top-notch sound quality in a portable package. With its meticulously designed circuitry and premium components, the Classic 20 MH offers a level of tonal richness that is unmatched in its class of small guitar amps. Its versatile feature set and user-friendly controls make it an ideal companion for both practice sessions and live performances, ensuring that you always have access to the best possible sound.
Featuring (2) EL84 power tubes and (3) 12AX7/ECC83 preamp tubes, the compact Classic 20 MH ensures that your unique sound reaches every corner of a room, providing the clarity and warmth that captivates and engages your audience.
The compact 2-channel Classic 20 MH suits any playing style perfectly. Each channel shares EQ, an effects loop, and reverb, all accessible through the included footswitch. The amp's rear panel features Peavey’s unique Microphone Simulated Direct Interface (MSDI) with XLR and USB outputs, a 3-position power attenuator switch allowing for 20-watt, 5-watt, or 1-watt operation, and a speaker defeat switch. Send your sound directly to the front-of-house (FOH) or hit the speaker defeat switch and record silently into your DAW without waking the neighborhood.
Capture your signature sound with the Peavey Classic 20 MH, featuring:
Very few small guitar amps pack the punch of the Peavey Classic 20 MH. Pair it with the 212-C Classic Guitar Cabinet to rock even louder. Included in the box is the sturdy 2-button footswitch with LED indicators (Peavey item #03620960).
To learn more about the Classic 20 MH and other mini heads offered by Peavey, check out our mini heads comparison page.
| Product Type | Guitar Amp Mini Head |
|---|---|
| Product Condition | New |
| Color | Tweed |
| Connectivity | Wired |
| Instrument | Electric Guitar |
| Number of Channels | 2 |
| Model | Classic 20 MH |
| Product Line | Classic |
| Amplifier Type | Guitar Mini Amp Head |
| Power | 20 Watts RMS |
| Impedance | 16 or 8 Ohms (switchable) |
| Amplifier Technology | Tube |
| Preamp Tubes | 3 x 12AX7 / ECC83 |
| Power Tubes | 2 x EL84 |
| Shipping Weight | 9.3 kg |
| Shipping Dimensions | 19.375 × 13.25 × 12.375 in |

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).













Yes, the Classic 20 MH delivers the vibrant harmonic complexity players have loved about the Classic series since 1973.
The Classic 20 MH can compete with a drummer and other amps in small-format settings, depending on the sensitivity of your speaker cabinet. Playing with a louder drummer and along with other higher-wattage amp will require additional reinforcement..
Using the 5W and 1W modes will decrease your headroom, which means you can make the power tubes break up at slightly lower volumes. This allows you to achieve "cranked amp" tone, saturation and sustain at manageable volume levels.
Yes. You can defeat the speaker output to use the direct output or USB for silent recording sessions.
Extremely effective. MSDI eliminates the need for an external speaker cabinet and microphone, sending the sound of a miked 12-inch speaker direct to the sound system or interface.
Three 12AX7 preamp tubes and two EL84 power tubes.
T.S.I. helps you identify potentially troublesome tubes before they fail at a gig. T.S.I. will alert you when a tube is nearing potential failure, and will automatically shut the tube off to protect the amp if a failure does occur.
| Feature | Classic 20 MH | 6505 MH | invective.MH | Classic 20 Combo |
|---|---|---|---|---|
| Smart features | Mini re-creation of the Classic Series tube amplifiers, MSDI direct output, speaker defeat switch, FX loop | Mini re-creation of the 6505 tube amp head, MSDI direct output, speaker defeat switch, FX loop | Mini re-creation of the invective tube amp head, MSDI direct output, speaker defeat switch, FX loop | 1 x 12-inch Sheffield 1230+ speaker, MSDI direct output, speaker defeat switch, FX loop |
| Tone / Character | Vintage tube warmth with harmonically rich breakup, vibrant cleans and bluesy tube drive | Classic high-gain metal tone with massive, saturated character | Tight, punchy and defined modern metal tones voiced by Misha Mansoor (Periphery) | Warm vintage tube tone with harmonically complex midrange |
| Wattage Modes | 20W / 5W / 1W | 20W / 5W / 1W | 20W / 5W / 1W | 20W / 5W / 1W |
| Speaker Outputs | 1 (8- / 16-ohm) | 1 (8- / 16-ohm) | 1 (8- / 16-ohm) | 1 (8- / 16-ohm) |
| Size / Weight | 7.25-in x 14-in x 7.75-in / 16.7 lbs. | 7.25-in x 14-in x 7.75-in / 17 lbs. | 7.25-in x 14-in x 7.75-in / 16.6 lbs. | 23.8-in x 22.2-in x 13.8-in / 38.6 lbs. |


$899.99 USD
WARNING: This product can expose you to chemicals, including DEHP, which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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Customer and Technical Support
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).