When people talk about “holy grail” guitar tones, there are names that inevitably come to mind for most guitarists.  Brilliant players like Jimi Hendrix, David Gilmour, Angus and Malcolm Young, Eddie Van Halen, James Hetfield, and John Mayer have changed music as we know it not only with their undeniable skills as writers and players but also with sonic signature.

One of such brilliant players is Robben Ford.

While we have no affiliation with any of these players, their influence in our work can be seen to those attentive.

The Overtone Special FM 100 is a clone of the amplifier largely responsible for Mr. Ford’s amazing tone.  Compared to other Overtone amps, this is undoubtedly the most alive.  Playing through it is like playing another instrument, with it frequently going into harmonic overtones (even on the clean channel).  The midrange in this amplifier is incredibly fat and juicy, even when compared to our other OTS models.

Everything comes as a balance, and we want the player to be forewarned that this is a particularly bright amplifier.  In order to help manage, we recommend pairing it with a C-lator or Klein-ulator.

As with all Ceriatone amplifiers, we’ve obsessed over component selection, and it uses our specially designed, custom transformers for superior reliability, frequency response, and feel.

Features Overview

Normal and FET input (with corresponding internal gain adjustment)
Bright, Deep, and Rock/Jazz toggle switches
Treble, Middle, Bass equalization (shared between channels)
Overdrive channel with Level and Ratio controls
Master volume and power amplifier Presence controls
LNFB Switch (On/Off)
Footswitch (Channel and Preamp Boost)
Rear panel OD Trim (fine tunes response of overdrive channel)
Passive effects loop
Full/Half Power switch

Power : 4 x 6L6GC
Preamp : 3 x 12AX7/ECC83
Rectifier : Solid State

OTS FM 100 Watt Configuration Options:

  • Chassis I - $1,159.50
    (Fully working chassis w/ footswitch. Tubes and cabinet not included.)
  • Chassis II - $1,276.50
    (Fully working chassis w/ tubes and footswitch. Cabinet not included)
  • Amp Head I - $1,398.50
    (Fully working chassis installed in a head cabinet w/ footswitch. Only tubes not included.)
  • Amp Head II - $1,515.50
    (Fully working chassis w/ faceplate and tubes installed in a head cabinet. Includes footswitch.)
  • Amp Head w/ C-lator Built In - $1,803.50
    (Fully working chassis w/ footswitch installed in a head cabinet with a C-lator. Tube driven Effect Loop Buffer built into the cabinet.)
  • 112 Combo Amp - $1,615
    (Fully working chassis w/ tubes installed in a 1x12 combo cabinet w/ footswitch. Speaker not included.)

Main photo is for illustrative purposes only and base 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.

Ceriatone amps are custom made, 100% hand-built, point to point hand-wired amplifiers. Each amp is thoroughly tested and burned in before it is shipped to you. For this reason, the build lead time is approx. 11-14 weeks for custom hand-built amplifiers and 5-10 days for pedals and buffered effects loops.

Pricing 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 the time the order is placed.

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

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OTS FM 100 Watt

  • $1,159.50

Available Options

Tags: ceriatone, ots, overtone special, fm, 100watt, robben ford