Marshall 2245 JTM45 Head vs Marshall Studio JTM ST20C MkII 20W 1x12 Combo
The Marshall 2245 JTM45 Head and the Marshall Studio JTM ST20C MkII 20W 1x12 Combo are both amplifiers sharing edge of breakup, dynamic, transparent. The Marshall 2245 JTM45 Head leans mid-forward and bright. The Marshall Studio JTM ST20C MkII 20W 1x12 Combo leans crunchy and warm.
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Blended from circuit-archetype lineage, dynamic feel, tone-signal overlap and tone-vector distance — the tone vector itself is derived from editorial description text, not a measured acoustic signal, so this reflects how similarly the catalog copy describes the two, not a lab measurement. Shown only within a gear class, and only where there's enough evidence to be meaningful.81% — very similar
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Genres both listings are associated with.- Blues Rock
- Classic Rock
- Blues
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Derived from overlapping tonal signals across both listings.- edge of breakup
- dynamic
- transparent
Marshall 2245 JTM45 Head
Marshall · amplifier
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Citation/mention fame — how often this gear is cited across artist rigs and gear discussion.$1481.32via Reverb
The Marshall 2245 is a reissue of the JTM45, the very first Marshall amplifier from 1962, built on a 5881/KT66 power section that gives it a warmer, more American-influenced voice than later EL34 Plexis. At around 30 to 45 watts it offers a smooth, bluesy breakup with rich harmonics and a slightly looser, vintage feel. Its warm cleans and creamy overdrive made it a cornerstone of British blues-rock. The simple four-input front panel recreates the original early-1960s circuit.
The Marshall Studio JTM ST20C is a 20-watt 1x12 combo based on the very first Marshall heads, the JTM circuits that predate even the 1959 Super Lead Plexi. It runs 5881 output tubes rather than the EL34s used across most of the Marshall range, which is a large part of why it sounds different: warmer, rounder and more American-flavoured, reflecting the JTM's origins as a reworking of the Fender Bassman circuit. That places it at the opposite end of the Studio series from the aggressive JCM800-based SC20, with a softer and more gradual breakup. Power switches down for lower-volume use. It suits blues, blues rock and classic rock players wanting the earliest Marshall voice.
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Genres this gear is documented as being used in.- Rock
- mid-forward
- bright
- crunchy
- warm
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Occasions this gear suits — judged per model, or derived from its wattage, connectivity and category.- Live
- Studio
- Live
- Studio
- Worship
- Practice