The OTS HRM MK2, 50 watt amp has the most highly sought after mods apart from the FM #102 amp. There is a bit more gain on both channels. The OD is crunchier and more compressed. And behold, it's one of the few Ceriatone amps that uses EL34's! Now we're talking! Wonderful for blues, rock, country and jazz.

The Ceriatone Overtone Special (OTS) is a hand built, point to point hand wired boutique guitar amplifier that was designed to capture the tones of Carlos Santana, Stevie Ray Vaughan, John Mayer, Larry Carlton, Robben Ford and many other great guitarists.

Note: PPIMV mounted on Front Panel will be either mounted in place of pilot lamp (Marshall styles) or a hole will be drilled (OTS styles).
          PPIMV mounted on Rear Panel will always be in place of a Speaker Output Jack.

OTS HRM MK2 50 Watt Options:

  • Chassis I - $1,026.50
    (Fully working chassis w/ footswitch. Tubes and cabinet not included.)
  • Chassis II - $1,107.50
    (Fully working chassis w/ faceplate, tubes and footswitch. Cabinet not included.)
  • Amp Head I - $1,263.50
    (Fully working chassis installed in a head cabinet w/ footswitch. Only tubes and not included.)
  • Amp Head II - $1,344.50
    (Fully working chassis w/ faceplate and tubes installed in a head cabinet. Includes footswitch.)
  • Amp Head w/ C-lator Built In - $1,625.50
    (Fully working chassis w/ faceplate and tubes installed in a head cabinet with a C-lator, Tube driven Effect Loop Buffer built into the cabinet. Includes footswitch.)
  • 112 Combo Amp I - $1,367
    (Fully working chassis w/o tubes installed in a 1x12 combo cabinet. Speaker not included. Includes footswitch.)
  • 112 Combo Amp II - $1,448
    (Fully working chassis w/ tubes installed in a 1x12 combo cabinet. Speaker not included. Includes footswitch.)

Summary of Features:
Power: 50W
Tube: EL34 x 2, 12AX7/ECC83 x 3
Footswitch Included

Special Features:
Passive Effects Loop
External Bias Jacks with Individual Bias Pots (Makes it easy to check and adjust bias using a VOM, without paying a technician $45 to bias your amp. It only takes 2 minutes and the step by step instructions are in the manual.) 
PPIMV Mod is installed on back panel in one of the speaker jack holes.

Main photo is for illustrative purposes only and pricing is for Chassis I. 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. You must order all kits direct from Ceriatone Malaysia. Ordering options for your amp may add several days to the build/lead time.

Ceriatone amps are Custom made, hand wired amps, built to order. There is meticulous attention to detail that is second to none, and no shortcuts are taken. Each amp is 100% hand built, hand wired point to point, and then is thoroughly tested and burned in before it is shipped to you. For this reason it takes approx. 4-5 weeks for your amp to be built and shipped. Options can add 1-2 weeks to the "standard" build time.

Prices shown on www.guitarampsusa.com 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 time the order is placed.

Note: We ONLY ship to PayPal verified addresses if paying via PayPal. No exceptions.

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OTS HRM MK2 50 Watt

  • $1,026.50


Available Options


Tags: ots, hrm, mk2, overtone special, dumble, ods,