Marshall SV20H Studio Vintage 20/5 Watt Tube Amplifier Head

The Marshall SV20H Studio Vintage Head packs legendary Plexi tone into a compact, all-valve 20 W head (switchable to 5 W). It’s driven by dual ECC83 preamp valves and two EL34 power tubes, offering single-channel Plexi-style tones via dual input sensitivity. With a 3-band EQ, Presence control, series FX loop, DI out, four inputs and high/low power modes, it delivers iconic British rock flexibility at manageable volumes. Crafted in the UK.

SPECIFICATIONS: 

• Model: SV20H Studio Vintage Head
• Power: 20 W RMS, switchable to 5 W 
• Tubes:
  • Preamp: 2 × ECC83 + 1 × ECC83 (phase splitter) 
  • Power Amp: 2 × EL34 
• Channels: Single-channel Plexi with four separate inputs (2× High, 2× Low sensitivity) 
• EQ & Controls: Bass, Middle, Treble, Presence, Power mode switch (20/5 W) 
• Features: Series FX loop; DI output with cab emulation 
• Outputs:
  • 5 × ¼″ speaker jacks (4/8/16 Ω selections)
  • 1 × DI output for PA/recording
• Inputs: 4 × ¼″ instrument inputs (High/Low for Normal & High Treble voices) 
• Construction: Black Tolex chassis, UK-built, IEC power inlet 
• Dimensions: Approx. 500 × 240 × 230 mm 
• Weight: ~9.25 kg (20.4 lb)