Peavey 6505MH Mini 20-Watt Valve Guitar Amp Head

The 6505MH is the full-sized 6505 shrunk into a head you can carry in one hand. Three 12AX7s and a pair of EL84s do the work, the two-channel layout mirrors its big brother almost knob for knob, and a three-way power attenuator drops it from 20 watts to 5 or 1 so you can push the valves properly in a bedroom. Add reverb, a buffered effects loop, an XLR mic-simulated output and USB recording, and it becomes the most portable way to get this amp's aggression onto a stage or into a session.

All valve, all the way through

There is no modelling here and no solid-state power section pretending otherwise. Three 12AX7/ECC83 valves handle the preamp and two EL84s handle the output, which is what gives the 6505MH its compression and the way notes bloom when you dig in. Peavey's T.S.I. circuit keeps an eye on both power valves and lights an indicator if one drifts out of spec, so you find out about a failing valve on the bench rather than three songs into a set.

Two channels from the same family

Rhythm and lead each get their own pre-gain and post-gain, and both share the three-band EQ — the same arrangement as the full-sized 6505, and the reason this amp is instantly familiar if you have played one. The rhythm channel adds bright and crunch buttons for everything from a clean platform to a dirty rock rhythm sound, and there is a footswitchable boost on tap when a section needs to step forward. The lead channel does what a 6505 lead channel does: tight, saturated and unmistakable.

20, 5 or 1 watt

The attenuator on the back panel is the feature that makes this amp genuinely useful rather than just small. Twenty watts of EL84 power is plenty for a rehearsal room or a miked club stage. Drop it to five and you can drive the power section hard at a volume that will not clear the room. Drop it to one and you can get the amp working properly at eleven at night. The character stays consistent across all three settings — you are trading headroom, not sound.

Record and go direct

Peavey's MSDI mic-simulated direct interface puts a balanced XLR on the back with a ground-lift switch, so front of house can take a feed without a microphone in front of a cabinet. A USB output sends the same simulated signal straight into a computer for recording. The speaker-defeat switch lets you run the amp silently into either of those outputs or into the headphone jack, which means late-night practice and direct recording without a cabinet in the room at all.

Everything else you need on the back

A buffered effects loop with send and return sits post-EQ, and two separate footswitch jacks split the duties — one for channel and boost, one for reverb and loop — so you can switch exactly what you want mid-song. The speaker output handles 16 or 8 ohm cabinets, and the voltage selector means the amp travels. Reverb is built in and footswitchable, which is more than most amps this size bother with.

Who it is for

Anyone who wants the 6505 sound without the weight, the volume or the price of the full head. It is a serious rehearsal and recording amp, a credible small-stage amp, and at 7.5 kg it fits in the boot with the guitar. Pair it with the 212-6 cabinet for a matched mini half-stack.