Marshall JTM45
The original Marshall amp, essentially a clone of the Fender Bassman circuit built in London. Warm, bluesy overdrive with a British voice. Used by Angus Young, Eric Clapton, and countless classic rock players. Lower gain than the later Plexi but with a sweeter, more organic breakup.
Modeler equivalents
- helix
- Brit J45 Nrm
- quad_cortex
- JTM45
- fractal
- Brit JM45
- kemper
- Search Rig Exchange for 'JTM45'
- katana
- Brown Channel
Field notes on the Marshall JTM45
All field notes →Marshall ST20H Studio JTM vs. SC20C Studio Classic: JTM45 or Plexi Inside the Studio Line
Both run real Marshall circuits in 20-watt format, but a JTM45 with KT66s and a 1959 Plexi with EL34s are different amps. Here's which Studio you should buy.
Marshall SJ20H Studio Jubilee vs. SV20H Studio Vintage: The Silver Jubilee 2555 Circuit or the JCM800 2203, in 20 Watts
Two Studio-line heads. Two of the most modified Marshall preamp topologies ever shipped. Which 20-watt version belongs on your board, and which one actually sounds like the amp it claims to copy.
Marshall SC20C Studio Classic vs. SV20H Studio Vintage: Plexi or JCM800 Inside the Studio Line
Both are 20-watt small-format Marshalls with the original Marshall circuits inside, but a 1959 Plexi and an 800 are different amps. Here's which Studio you actually want.