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Marshall SV20H Studio Vintage MKII 20W Head


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Ray Mullin Music - Since 1923. We OPEN, inspect, and test ALL guitars, pedals, amplifiers, etc. Our instruments are tuned, cleaned, and cared for daily in a humidity and temperature controlled room.

The SV20H brings the classic tone of the 1959SLP straight to your home. Arguably the most famous amp of all time has been perfectly reinvented for today's guitarist. Uniting the original all-valve sound with the choice to switch between 20W and 5W at the touch of a button, all packed into the definitive rock rig.

Handcrafted In The UK 
Capturing the classic Marshall spirit with an iconic British built valve amp.

Classic Sound Captured 
Accurately recreating the iconic sound heard on thousands of influential tracks from across the years.

Tame The Untameable 
Everything you expect from the 1959SLP now available with power reduction technology, letting you shift through the gears from 20W to 5W.

Iconic Stylings 
A sonic essential lovingly recreated for today's player, the SV20H the truly mirrors the 1959SLP.

Marshall SV20H Specifications

ElectronicsJump to...

Output wattage
20W (with power reduction option to 5W)
5x 1/4" jack sockets, selectable 16Ohms / 8Ohms / 4Ohms load
4 (2 x high, 2 x low) "Lead and Bass"
Low/High power mode selection switch, presence, bass, middle, treble, high treble/loudness I, normal/loudness II
Effects loop
Yes, series, send/return

ValvesJump to...

Preamp valves
2x ECC83, 1x ECC83 (phase splitter)
Power amp valves
2x EL34

RangeJump to...


GeneralJump to...