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Professional Series Dual Channel Amplifier

Meticulously handmade with custom eyelet/turret boards using robust components. The chassis are made of thick steel, powder coated with epoxy paint screen printing.


The control sets of the amplifiers provide a wide range of useful sounds in intuitive ways. The master volume controls also work excellently, being regarded as among the best available.

All available channel designs for the Professional Series amps and preamps respond very well to different guitars/pickups. Even the most aggressive of the channel designs has exceptional articulation and responsiveness.


Key features:

*100W (4x EL34). Can be biased for many different output tube types. Biasing can be done quickly and easily by the user, with a regular volt meter, and without having to open the amplifier. (See bias document for more information.)

*Access to the tubes (at the back of the amp) is achieved by removing a protective aluminum channel which is held in place by two thumbscrews.

*Consistent sweep of Master volume controls (sounds excellent at lower or higher volume levels).

*Transparent sounding effects loop, compatible with pedals and rack devices.

*Footswitchable overall Master volume controls (2), as well as footswitchable channel switching (a 2-button footswitch is used).

*Separate Edge and Crunch switches for each channel to help shape each channel’s sound to your tastes.

*Separate EQ for each channel. EQ has a smooth, easy-to-adjust functionality in ranges that work effectively.

*Slave out for driving other poweramps or for DI purposes (when a speaker cabinet simulator is used).

*Measures 29 1/2″ W x 9 3/4″ D x 10 3/8″ H (feet add 3/4″ to the overall height, and the handle is approximately 1/4″ in height)

*Available in many channel configurations.


Options for customizing your Professional Series dual channel amplifier:

Channel designs available for Professional Series dual channel amps

There are several channel designs to choose from, to customize the sound of your amplifier.

The Professional Series dual channel amps can be built with the following general channel configurations:

Overdrive R / Overdrive L (Rhythm and Lead variants of the same overdrive design, for instance Firejack Rhythm / Firejack Lead)

Overdrive / Clean

Lead variants of each overdrive design have fatter and more “up-front” mids, slightly less focused attack, and sound a bit smoother overall. The amount of gain in the Rhythm and Lead variants is the same for each design; it’s the voicing and feel that are changed for the Lead variant, not the gain level.

See the list of channel designs below.

Provides clean, blues and classic overdrive sounds with the familiar characteristics of many vintage amps while having its own sonic signature. Makes for excellent crunch sounds with the gain turned up especially if boosted with a good overdrive pedal.

-OVERDRIVE GAIN CHANNEL DESIGNS (each has R and L variants)-

The Peters take on the famous “80s Marshall* mod” sound. It has two major differences from other amps in this category: 1) when you strike the strings hard and/or use higher output pickups, it focuses the attack in such a way that the amp can be used for heavier sounds (the sound naturally gets tighter and the attack hits harder), and 2) with the gain turned up, the overdrive character retains its vintage/open characteristics. This design is based on Vega and Regulus designs combined; it’s the most toneful and flexible “crunch” design Peters Amplification has made.

While classified as a modern high gain design, the Firejack has a more vintage sound and feel with more shimmer and chime to its sound. It’s a re-inventing of the earliest Gryphon design but with elements of the later Gryphon design (including its specific edge switch functionality). Since the format of the amps have changed internally in several areas as of 2017 (including effects loop and poweramp circuitry), there are other changes in the voicing as well.

This is the most aggressive and focused modern high gain design made by Peters Amplification to date, and it’s still full of tone. It’s fierce and unapologetic. Prepare to have your face ripped off…and enjoy it.

The name Marshall is only used for general comparative purposes. The name Marshall is trademark Marshall Amplification.

Cosmetic options for Professional Series dual channel amplifiers

Above is my current stock of covering material, used on the amplifier head shells. I keep stock of black type 1. Stock of other types will vary. (This section will be updated as my material selection changes.)

These are photographs I have taken of each material type, under the same lighting conditions and at the same distance/scale. Direct comparisons between material types/colors of my stock can be made by these photographs.

Material types/colors other than the above are available, however additional lead time may be required. Depending on how difficult it is to acquire a particular type of material, an extra charge may be added.

Some of the white chassis for the Professional Series dual channel amps, which were used from 2008-2011, are still in stock. These chassis can be used for dual channel models, and are best suited to “overdrive/clean” channel configurations (since “overdrive” and “clean” are written beside the channels).

This white chassis does not have Channel/Master indicator LEDs. (The footswitch for the amp still has LED indicators though.) Instead, it has a power lamp LED.

Due to this chassis’ specific shade of white, if you want white control knobs to go with it, the round “white” or “cream” types are recommended. (The white pointer types have a shade which doesn’t match as well.)

Pictures above show some of the backlighting color options for the Professional Series dual channel and Professional Series triple channel amplifiers.

Choose from: White, amber, red, green, blue, purple.  These colors are available for the backlighting without additional charge.

Choose from: White, yellow, orange, red, green, blue, purple.  All LEDs are the diffused type, and all have the same brightness since I limit the LED brightness to a set amount in the circuit. (None of the LEDs are brighter than the rest, so any of them make for a good choice.)

Choose whatever combination of colors you want for channel indicators and master volume indicators. Some people associate certain colors with certain channels, and others prefer to choose a single color for all indicators (to fit more with a “color theme” for the amp).

Most control knobs are available without any additional charge. Types not listed here however may cost extra and may require additional lead time.

Pointer types are also available in other colors. Some colors may require additional lead time, since I don’t stock every color.

Some of the above pictures show triple channel faceplates, and two sizes of knobs. For dual channel amps, only the larger size would be used. (The smaller size knobs aren’t necessary since the spacing of control rows is wider for the dual channel amps.)