Marshall 2203 Modified JCM 800
Professional music gear - detailed information and where to buy
Marshall
2203 Modified JCM 800
Product Info
Article Number:
610334
Brand:
Marshall
Model:
2203 Modified JCM 800
Category:
Tube Guitar Heads
Price:
$3,155.90
* Prices may vary. Check retailer for current pricing and availability.
This 2203 Modified JCM 800 is a powerhouse – a serious, no-frills amp for players craving that classic British high-gain sound. It’s a direct descendant of the legendary 2205, refined for modern sensibilities. Perfect for rock, hard rock, and metal players wanting a raw, impactful tone.
Product Description
- Marshall 2203 Modified JCM 800
- Tube Amp Head for Electric Guitar
- Power: 100 W
- 1 Channel
- 2 Inputs: high and low sensitivity
- Preamp tubes: 2x ECC 83 and 1x ECC 83 (phase splitter)
- Power amp tubes: 4x EL34
- Controls: Pre-amp volume
- master volume
- treble
- bass and presence
- Switches: Tight Switch
- OD I/II Switch and Mid-Boost Switch
- Standby switch
- Power switch
- Speaker outputs: 2x 6.3 mm jacks
- Selectable impedance: 16 Ohm /8 Ohm / 4 Ohm
- Switchable
- serial FX loop
- Weight: 20.5 kg
- Dimensions (W x H x D): approx. 740 x 315 x 210 mm
PROS
- • Robust construction with Marshall’s signature chassis and durable components
- • The 'Tight' switch delivers a focused, articulate high-gain tone
- • Modified circuit enhances the classic JCM 800's responsiveness and dynamics
- • EL34 power tubes provide the iconic Marshall 'chime' and aggressive drive
CONS
- • The 100W output is loud, potentially overwhelming for smaller venues or home use
- • Single channel design limits versatility compared to multi-channel amps
- • Relatively heavy, making transport and gigging more cumbersome
Product Video
Key Features
Power (Watts)
100
Tubes
2x ECC83 (preamp), 1x ECC83 (phase splitter), 4x EL34 (power amp)
Channels
1
Effects
Serial FX Loop
Speaker Output
2x 6.3 mm jacks, selectable 16/8/4 Ohm impedance
Weight
20.5 kg
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Frequently Asked Questions
Modifications often involve component upgrades and subtle circuit tweaks to improve headroom, clarity, and overall responsiveness, generally resulting in a more refined and dynamic sound.
While 100 watts is substantial, careful gain staging and a good power soak or attenuator can make it manageable for recording applications.
A Celestion Vintage 30 or Greenback speaker will really capture the classic Marshall tone this amp is designed to deliver.
