Marshall JCM900-4100 VIintage 100 Watt Valve Amp Head

The Marshall JCM900‑4100 is a legendary 100 W all-valve tube head, born as the next evolution of the JCM800 in the early 1990s. Boasting two footswitchable channels—Channel A for clean-to-crunch tones and Channel B for high-gain lead sounds—along with a series FX loop, dual reverb, and 4× 5881 power tubes, it delivers loud, aggressive British tone with on-stage versatility. Built tough in the UK for powerful performance.

SPECIFICATIONS:

• Model: JCM900‑4100 Vintage 
• Power Output: 100 W RMS (switchable to 50 W) 
• Channels:
• Channel A: Clean → crunch with Gain & Reverb controls
• Channel B: High-gain lead with independent Volume & Reverb
• EQ: Shared Bass, Middle, Treble, and Presence
• Tubes:
  • Preamp: 2× ECC83 + 1× ECC83 (phase splitter)
  • Power Amp: 4× 5881 (6L6 variant) 
• Outputs:
  • Dual speaker jacks; switchable 4 Ω / 8 Ω / 16 Ω
  • Emulated direct/compensated outputs 
• Dimensions: 740 × 310 × 210 mm
•  Weight: 18.8 kg 
• Construction: Durable black & gold heritage styling