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Marshall ST20C Studio JTM 20-Watt 1x12 Combo Amplifier — New

Listing photo · Chuck Levin’s Washington Music Center

Other / Modern / year unspecified

Marshall ST20C Studio JTM 20-Watt 1x12 Combo Amplifier — New

$1,600

Seller's listed price. Shipping, import charges and taxes may apply.

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Last observed 28 Oct 2026. Confirm current availability with the seller.

Brand in listing
Other
Category
Amplifier
Condition
Not specified by the source
Source country
US
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From the listing

Seller's description

Power, Precision, and Pure Tone - The Marshall ST20C Studio JTM 20-Watt 1x12 Combo Amplifier The amp that started it all is back. The same iconic JTM sound, but more compact packing the power you know and love from Marshall, in a new compact size. The JTM is a welcome addition to the Studio range, offering players authentic, smooth, and valve-driven break-up at lower volumes – perfect for home or studio use. Don’t let its size fool you, the superb all-valve tone of the Studio JTM packs a punch. Creating a sound that defined a generation the JTM delivers the legendary loud blend of crunch and clean recognised the world over. Power reduction from 20W to 5W The same familiar high treble and normal tones as found on the original JTM Incorporate outboard effects using the effects loop Built in the UK Like the original 30W head, the Studio JTM is loaded with two ECC83 preamp valves, two 5881 power amp valves and one ECC83 phase splitter, taking you right back to the renaissance of rock’n’roll. The Studio JTM offers the same control and versatility as older models, where simply patching the two channels together opens up a world of all-valve tonal possibility. Power switching enables you to switch effortlessly between 20W and 5W and two loudness controls mean you can play as loud as you like. Features such as a DI out and FX loop have been added, bringing the JTM into the now. Hand built at their world-class factory in Bletchley, England, the Studio JTM features finger-jointed cabinets, hand-welded chassis, hand-soldered potentiometers and valve bases, and the highest quality componentry. Adorned with period-correct aesthetics from the same metal, red enamel poured “coffin” logo to its fawn fret complete with gold piping and beading, the Studio JTM beautifully nods to the 60s. SPECIFICATIONS Power: 20W with power reduction to 5W Valves: 2 x ECC83, 1 x ECC83 (phase splitter) and 2 x 5881 Channels: Single channel with four separate inputsHigh treble and normal lou

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