Marshall JTM Studio ST20H 20 Watt Electric Guitar Head

The unrivalled number one is here, just smaller! Reproducing the legendary, warm and smooth tones of the original Marshall JTM, the Studio JTM packs a punch. Swap between 20 watts and 5 watts at the flick of a switch and let the era-defining sound of the JTM steal the show, whether it's plaing at home, or on stage. Make sure to pair the ST20H with the ST112 or ST212 for a small but perfectly formed Marshall rig.


  • Technology: All Tube/Valve
  • Channels: 1 with 2 voicings
  • Output Wattage: 20 Watts (with power reduction option to 5 Watts)
  • Outputs: 5x 1/4" jack sockets (16 / 8 / 4 Ohm load)
  • Inputs: 4 x 1/4" jack instrument inpts (high/low sensitivity)
  • Controls: Treble, Middle, Bass and Presence
  • Effects: none
  • Effects Loops: Yes, send/return
  • Preamp Valves: 2x ECC83, 1x Ecc83 (phase splitter)
  • Power Amp Valves: 2x 5881
  • Weight: 20.4 lbs.
  • Width: 19.7"
  • Height: 9.4"
  • Depth: 9.1"

Looking for a combo? Check out the ST20C. Looking for a cabinet to complete your set up? Try the ST112 or ST212.