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Granger M100 SuperPlexi valve amplifier

The Granger M100 "SuperPlexi" valve amplifier is a hand-wired custom reproduction of the legendary 100 watt amp that defined arena rock. Townshend, Hendrix, Van Halen - all names synonymous with huge crushing rock anthems and their larger-than-life sounds. This 100 watt monster carries on that tradition, and a little more. It is built like a tank, based on tried and true circuitry, but features key component value selections that bring out the sweetest "Plexi" tone possible. Clean tones are easily achieved at any setting by rolling off the guitar volume. As with some of the vintage amps of the 60s and 70s, each channel has two inputs, one high and one low impedance, and a volume control. A (post phase inverter) master volume (Ken Fisher Type 2/Lar-Mar PPIV type) can be added to achieve overdriven tones at lower volumes (recommended). Each channel shares the standard Bass, Middle and Treble tone stack and Presence control. The inputs can be jumpered to utilize both channels with channel 1 being the lead and channel 2 being the normal voicing. The preamp consists of 3 ECC83S valves and power is rectified by UF4007 diodes to produce a punchy, tight powerful low end. The power supply filtering is based on the legendary 67-68 era "12000 series" amps, and this arrangement produces a great combination of punch and touch response. The power section runs on four JJ EL34 which produce well over 100 watts when fully overdriven into saturation. For the service-minded player, an external bias adjustment with low voltage test points (1 per output tube and 1 common ground) allows the user to bias the amp when replacing valves without removing the chassis. Custom options include VariWattage, a switchable X-Gain Mod, True Bypass effects loop (TBFX), passive effects loop, tolex & piping change, and a custom cover with the Granger logo.

Granger M100 SuperPlexi valve amplifier

Granger M100 sound clips

Granger M100 YouTube video

Granger M100 features:

* Handcrafted/handwired in USA
* US-made ClassicTone transformers
* Turret board wiring
* Output (RMS): 100 watts
* Preamp valves: 3 x ECC83S
* Power amp valves: 4 x EL34
* Diode rectification
* Presence control
* Bass, Middle, Treble controls
* Volume 1 (Bright channel)
* Volume 2 (Normal channel)
* Post-PI Master Volume
* 4/8/16 ohm impedance selector switch
* Cliff input jacks
* Cliff output jacks
* "Plexi" control knobs
* External bias adjust and test points
* Dimensions: 29.5"W x 10"H x 8.5"D
* Weight: 47 lbs.

* Vari-Wattage™ ($200)
* X-Gain Mod, switchable ($50)
* Ultimate FX Loop ($100)
* Passive Effects Loop ($25)
* Custom Head Cover ($50)
* Tolex/Piping Change ($25)

Click to see Tolex and Grill cloth colors

Additional (No Charge) options (please specify in special instructions field when ordering):
* No PPIV Master Volume
* JJ 6CA7, E34L, KT66, or KT77 output valves

Please specify options during ordering, or contact us within 10 days after placing order. Want an option that's not listed? Email us for a quote!

Please see our current turnaround times before ordering! Each amp is custom built to order.


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Prices subject to change without notice. Orders already in progress are not subject to price changes. Granger Amplification reserves the right to make any product design changes without notice or obligation to incorporate these changes in products previously purchased.

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All content copyright 2007-2015 by Blue Nite Productions. grangeramp.com is the website of Granger Amplification LLC, a company that builds quality, custom amplifiers, one at a time, at very reasonable prices. Our focus is on producing all-tube, hand wired amplifiers based on proven designs such as vintage Marshall and Fender products, and other boutique amps, while charging a fair price. We also do kit building, modification, and repair work. We specialize in Plexi recreations, custom, boutique amp builds, and custom mods. All trademarks are owned by their respective companies and are only used herein for historical references. - guitar amplifier, amplifier, guitar, amp, amps, repair, mods, hand, wired, tone, custom amp, custom amps, amp mods, modifications, amplifier, handwired, point to point, tube, vacuum tube, valve amp, brown sound, van halen tone, van halen amp, made in usa, d18, mv36, e35, m45, m50, g50, cg50, lead overdrive 100, variwatt, variwattage, power scaling, vvr, tbfx, classictone, marshall, fender, jmp, jcm, superlead, plexi, 15 watt, 18 watt, 35 watt, 36 watt, 45 watt, 50 watt, 100 watt, single ended, push pull, 5E3, bassman, matchless, trainwreck, express, tweed, deluxe, curt granger, birmingham alabama