The Ceriatone JTM50 is a frequently misunderstood amplifier….

The JTM50 has a misnomer as “a JTM45 with EL34s”.  That is incorrect.  Some players confuse the “black flag” nickname with this amp being used by the seminal punk band fronted by Henry Rollins.  That is also incorrect.  Okay, nobody confuses that, but we love “Family Man” so much we can’t help but reference it.

The JTM50 “black flag” has aspects of a JTM45 and aspects of a Plexi50 Bass.  But it is neither.  For players looking for the sweetness of a JTM45, but with more midrange grind and a firmer bottom end, the JTM50 delivers in spades.  Because of the tube rectification, it has more sag and compression than a Plexi50 Bass.

Like other Ceriatone amps, we have labored carefully to select the finest components to suit the design, and the JTM45 Bluesbreaker uses our specially designed, custom transformers for superior reliability, frequency response, and feel.

Note: PPIMV option mounted on Front Panel will be in place of pilot lamp.

          PPIMV option mounted on Rear Panel will be in place of Aux. Speaker Output Jack.

Power: 50 watts
Tubes: EL34 x 2 / 12AX7 x 3 / GZ34/5AR4 x 1
Dual Channel / Dual Input
Channel Volume Controls
Push-Pull Bright Switch on Bright Volume
Presence Control
Full/Half Power Switch Standard
Passive Effects Loop
External Bias Probe Jacks and Adjustment

JTM 50 Configuration Options:

  • Chassis I - $886.50
    (Fully working chassis. Tubes not included.)
  • Chassis II - $976.50
    (Fully working chassis. Tubes included.)
  • Amp Head I - $1,086
    (Fully working chassis, fully assembled and installed in a head cabinet. Tubesubes not included.)
  • Amp Head II - $1,176
    (Fully working chassis fully assembled and installed in a head cabinet. Tubes included.)
  • 112 Combo Amp - $1,325.50
    (Fully working chassis w/ tubes installed in a 1x12 combo cabinet. Speaker not included.)

Main photo is for illustrative purposes only and advertised base pricing is for Chassis I w/o tubes. Photos may include options that are not included if you order the standard version of the amp or don't order all options available. We also may not offer all options available and/or shown in main illustrative photos. Photos are of products assembled by Ceriatone. We no longer sell kits. Black Tolex is standard on all amps unless otherwise stated in product description.

Ceriatone amps are custom made, 100% hand-built, point-to-point hand-wired amplifiers using the highest quality components and custom wound transformers. Each amp is thoroughly tested and burned in before it is shipped to you. Even with long lead times (due to a large number of guitarists ordering Ceriatone amps and the Covid-19 pandemic), Ceriatone will take no shortcuts or change their build standards in the production of their hand-built amps. Lead times listed are approximate.

Current lead times are listed on the main page at and are approximate.

Pricing shown on includes the shipping cost to the USA only. We only ship to the USA, Canada and Mexico. Shipping to Canada, Mexico, Puerto Rico and the US Virgin Islands will have additional shipping. We'll invoice the difference in shipping and it is due at the time the order is placed. Paypal is our payment processor and you do not need a Paypal account to check out.

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JTM 50

  • $886.50

Available Options

Tags: jtm 50, marshall, ceriatone.jtm50