General Model: ST20C Studio JTM Combo Series: Studio JTM Type: All-valve tube combo amplifier Power Output: 20W / 5W switchable Channels: Single channel with two voices Country of Origin: United Kingdom Electronics & Tubes Preamp Tubes: 2 x ECC83 Phase Splitter Tube: 1 x ECC83 Power Tubes: 2 x 5881 Effects Loop: Yes DI Output: Speaker-emulated DI output Circuit Inspiration: Original Marshall JTM45 / 2245 Speaker Speaker Configuration: 1 x 12" Speaker Model: Celestion G12M-65 Creamback Speaker Impedance: 16 Ohms Controls Presence Bass Middle Treble Loudness I Loudness II High / Low Power Switching Inputs & Outputs 4 Inputs FX Loop Send/Return DI Out Speaker Outputs for 4, 8, and 16 Ohm configurations Construction Cabinet Material: Finger-jointed plywood Covering: Black levant with gold piping Logo: Metal “coffin” style Marshall logo
