Detail 01
Two footswitchable channels
Channel A is low-gain and channel B is high-gain.
Product detailSKU #1364827969558
MarshallJCM900 4100 100W Dual Reverb Guitar Amp Head
Independent shopping perspective
The Korena take
Marshall’s JCM900 4100 is a 100W guitar amp head organized around two footswitchable channels: lower-gain A and higher-gain B. Both channels share a four-band EQ, while Volume, Reverb and Gain controls remain independent. A series FX loop with level controls supports a more deliberate effects setup, and the tube complement comprises three ECC83s and four 5881s. It suits players who need clean tones, tube overdrive and two-channel reverb from one head.
Strong match
Who this is for
- Live guitar sets that move between lower-gain and high-gain channel settings.
- Studio recording setups using a tube amp head with a level-controlled series FX loop.
Consider the trade-offs
When to look elsewhere
- Players who require separate Presence, Bass, Middle and Treble controls for each channel.
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Shared four-band EQ
Presence, Bass, Middle and Treble settings apply across both channels.
Detail 03
Series FX loop with level controls
The effects loop has its own level adjustment.
Final check
Know before you order
- 01Channel switching is footswitchable, and the head provides an optional footswitch input.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01How many channels does the JCM900 4100 have?
It has two footswitchable channels: low-gain A and high-gain B.
02Which tubes are listed?
The listed complement is three ECC83 tubes and four 5881 tubes.
03Does it have reverb?
Yes. It has independent Reverb controls and is described as having two-channel reverb.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsSize & weight
- Dimensions Wxhxd
- 3.22 inch x 1.44 inch x 1.09 inch
