Item #1588502 Model #ST20C-U
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Marshall Studio JTM Tube Guitar Combo Amp Black

$1,949.99$1,499.00

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A reissue that reproduces the legendary, warm and smooth tone of the original Marshall JTM.

The Marshall Studio JTM guitar combo delivers the same iconic sound as the original JTM45, but in a more compact format. The JTM combo is a welcome addition to the Studio range, offering players authentic, smooth and valve-driven break-up at lower volumes—perfect for home or studio use. Don’t let its size fool you, because the all-valve tone of the Studio JTM packs a punch. Like the original 30W head, the Studio JTM is loaded with two ECC83 preamp valves, two 5881 power amp valves and one ECC83 phase splitter, taking you right back to the renaissance of rock ’n’ roll. The Studio JTM offers the same control and versatility as older models, where simply patching the two channels together opens up a world of all-valve tonal possibility.

Ideal for creating that definitive vintage tone, the Studio JTM combo is equipped with a single 12" G12M-65 Creamback Celestion speaker. Creamback speakers handle greater power allowing for additional low-end grunt that complements the warm and vocal mid-range crunchy upper. Power switching enables you to switch effortlessly between 20W and 5W and two loudness controls mean you can play as loud as you like. Features such as a DI out and FX loop have also been added, bringing the JTM into the modern day.

Jumping channels
Being a classic amplifier, the Studio JTM series is a 2-channel amplifier without traditional channel switching. Each channel has a high-sensitivity input, voiced to take a guitar with high output pickups and a low sensitivity input, voiced for a guitar with lower output pickups having more gain and allowing you to take advantage of that increase in gain to go full rock 'n' roll. Each channel has its own tonal color and a master volume control. The Bass Mid and Treble controls are shared between the two channels.

A lot of times you will see guitar players running a short jumper cable between the two channels of the amplifier. Doing this allows you to blend the tone of the two channels with the master volume controls taking full advantage of the amplifier’s capabilities.

This is accomplished by a very simple process. Plug your guitar on the low sensitivity input of channel 1 Connect input 2 of channel 1 to input 1 of channel 2 using an instrument patch cable. You can then blend the channels by adjusting the channel volumes of the amplifier. Try it out for yourself to open the tonal capabilities of this amp.
Specifications
  • Power: 20W/5W
  • Valves: 2 x ECC83, 1 x ECC83 (phase splitter), 2 x 5881
  • Channels: 1
  • Inputs: 4
  • EQ: Treble, middle, bass and presence
  • Speaker: 1 x 12" Celestion G12M-65 Creamback
  • Dimensions (WxHxH): 19.7" x 18.11" x 10.43"
  • Weight: 39 lb.

Features

  • Authentic vintage tone
  • Handmade in the UK
  • Swap between 20W and 5W at the flick of a switch
  • One 12" G12M-65 Creamback Celestion speaker