Marshall ST-20H Studio JTM 20 Watt Guitar Amplifier Head

Experience the iconic Marshall JTM sound in a perfectly sized package with the Studio JTM head. This compact powerhouse captures all the legendary warmth and smooth tones that made the original JTM series famous, now engineered for modern players who need versatility without sacrificing that classic Marshall character.

Built with traditional UK craftsmanship and all-valve construction, the ST20H features dual power settings that switch between 20W and 5W operation. The single channel design offers two distinct voicings, while the comprehensive tone controls including Treble, Middle, Bass and Presence give you complete command over your sound. Four instrument inputs with high and low sensitivity options accommodate any guitar setup.

The valve complement consists of 2 x ECC83 preamp tubes plus 1 x ECC83 phase splitter, driving 2 x 5881 power tubes for authentic tube saturation. Multiple speaker outputs (16Ω, 8Ω, and 4Ω) provide flexible cabinet matching options, while the effects loop allows seamless integration of your pedal collection. At just 9.25kg and measuring 500mm x 240mm x 230mm, this head pairs perfectly with Marshall Studio cabinets for a complete compact rig.