Capture the unmistakable warmth and dynamic response of the amplifier that started it all. The Marshall Studio JTM ST20H faithfully recreates the legendary JTM45 in a compact, all-valve 20-watt head, delivering rich cleans, smooth breakup, and vintage British tone that's equally at home on stage, in the studio, or in your practice space. Switch between 20 watts and 5 watts to achieve classic tube saturation at more manageable volumes, while modern features like a series effects loop and DI output make the ST20H ready for today's players.
20W all-valve amplifier head with selectable 5W low-power mode
Inspired by the legendary Marshall JTM45
Two-channel design with bridgeable High Treble and Normal inputs
Three ECC83 (12AX7) preamp tubes and two 5881 power tubes
Series effects loop with bypass switch
Speaker-emulated DI output for recording and live performance
Three-band EQ with Presence control
Handcrafted in the UK using premium construction techniques
Blues, classic rock, vintage rock, and early British tones
Recording studios and home practice
Players seeking exceptional pedal platform performance
Gigging musicians who want authentic Marshall tube tone in a portable format
Type: All-Valve Guitar Amplifier Head
Output Power: 20W / 5W
Channels: 2 (Bridgeable)
Preamp Tubes: 2 × ECC83 (12AX7) + 1 × ECC83 Phase Splitter
Power Tubes: 2 × 5881
Effects Loop: Yes (Series, Switchable)
DI Output: Yes (Speaker Emulated)
Speaker Outputs: 4Ω, 8Ω, and 16Ω
Dimensions: 19.7" W × 9.4" H × 9.1" D
Weight: 20.4 lbs.
Made In: United Kingdom
New – Authorized Marshall Dealer.
The ST20H delivers everything players love about the original JTM45—warm cleans, smooth overdrive, and incredible touch sensitivity—in a size that's practical for modern musicians. It excels as both a pedal platform and a standalone vintage amplifier, pairing beautifully with the Marshall Studio JTM ST212-U cabinet for an authentic British stack that looks as incredible as it sounds.
Capture the unmistakable warmth and dynamic response of the amplifier that started it all. The Marshall Studio JTM ST20H faithfully recreates the legendary JTM45 in a compact, all-valve 20-watt head, delivering rich cleans, smooth breakup, and vintage British tone that's equally at home on stage, in the studio, or in your practice space. Switch between 20 watts and 5 watts to achieve classic tube saturation at more manageable volumes, while modern features like a series effects loop and DI output make the ST20H ready for today's players.
20W all-valve amplifier head with selectable 5W low-power mode
Inspired by the legendary Marshall JTM45
Two-channel design with bridgeable High Treble and Normal inputs
Three ECC83 (12AX7) preamp tubes and two 5881 power tubes
Series effects loop with bypass switch
Speaker-emulated DI output for recording and live performance
Three-band EQ with Presence control
Handcrafted in the UK using premium construction techniques
Blues, classic rock, vintage rock, and early British tones
Recording studios and home practice
Players seeking exceptional pedal platform performance
Gigging musicians who want authentic Marshall tube tone in a portable format
Type: All-Valve Guitar Amplifier Head
Output Power: 20W / 5W
Channels: 2 (Bridgeable)
Preamp Tubes: 2 × ECC83 (12AX7) + 1 × ECC83 Phase Splitter
Power Tubes: 2 × 5881
Effects Loop: Yes (Series, Switchable)
DI Output: Yes (Speaker Emulated)
Speaker Outputs: 4Ω, 8Ω, and 16Ω
Dimensions: 19.7" W × 9.4" H × 9.1" D
Weight: 20.4 lbs.
Made In: United Kingdom
New – Authorized Marshall Dealer.
The ST20H delivers everything players love about the original JTM45—warm cleans, smooth overdrive, and incredible touch sensitivity—in a size that's practical for modern musicians. It excels as both a pedal platform and a standalone vintage amplifier, pairing beautifully with the Marshall Studio JTM ST212-U cabinet for an authentic British stack that looks as incredible as it sounds.
