Marshall 2245 JTM45 MK II Reissue 2-Channel 30-Watt vs Marshall Studio JTM ST20C MkII 20W 1x12 Combo
The Marshall 2245 JTM45 MK II Reissue 2-Channel 30-Watt and the Marshall Studio JTM ST20C MkII 20W 1x12 Combo are both amplifiers sharing warm, dynamic, transparent. The Marshall 2245 JTM45 MK II Reissue 2-Channel 30-Watt leans mid-forward. The Marshall Studio JTM ST20C MkII 20W 1x12 Combo leans crunchy.
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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.77% — very similar
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Genres both listings are associated with.- Blues Rock
- Blues
- Classic Rock
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Derived from overlapping tonal signals across both listings.- warm
- dynamic
- transparent
- edge of breakup
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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 JTM45 is a faithful reissue of Marshall's first amplifier, a roughly 30-watt head built around a KT66 power section that gives it a warmer, tweed-influenced character distinct from later EL34 Plexis. It delivers smooth, bluesy breakup, rich harmonics, and a slightly loose vintage feel through its classic four-input panel. The warm cleans and creamy overdrive made the original a foundation of 1960s British blues-rock.
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
- crunchy
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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