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Marshall JCM800 2205

They have such a great tone and classic tone that has been featured on almost every rock album since their inception. A lot of the original Marshall plexi and JCM 800 amplifiers were modded by many of the guitarist back in the 80s and early 90s. In the late 80s, Marshall decided to release a split two channel JCM 800 amplifier. This would give you the users a multi-channel amplifier to meet the new upcoming musical needs.

Make and model Marshall - JCM800 (2205)
Power (Watt) 50 W
Type Head
Channels 2
Footswitchable channels Yes
Lamps
Power lamps 2 x EL34
Preamp lamps 3 x 12AX7
Rectifier Solid
Effect loop No
Effects No
Reverb No
Impedance 4/8/16
Size
Weight
Marshall-JCM800-2205
Two channels switchable only via footswitch (without footswitch, the second channel is active). Enough sound control possibilities. Easy controls. You get the classic Marshall sound when all controls are in center position.The combination of gain, volume and master controls allows to perfectly balance the channels.Its 50 watts are more than enough, and its sound loaded with mids/highs really cuts through the mix.
Its a typical Marshall sound, the lows are not emphasized, mids and highs are strong. Distorted chord sounds accurate but the sound stays always warm and has the great ability to cut through the mix.

Its a typical rock sound but its also very good for blues. The main advantage is the sound character. Don’t expect a Mesa or Fender Twin clean sound. The first channel provides a crunch sound at high volumes (but it depends on the guitar).

The distortion of the second channel provides a big ACDC and Lenny Krawitz rock sound. The sound character is amazing. You have the impression that youre playing with an authentic amp.

Considering that these amps are easy to tune, I thought I could increase its performance. I first replaced all condensers with high-quality components (power supply and signal sections). The lows didn’t increase but the sound became a bit clearer.

Small technical correction: the distortion of the second channel is produced by diodes. Some people say these diodes help the amp produce a higher distortion but the truth is that the amp overdrives thanks to the diodes.


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