Peavey ReValver Mk III

Dedicated bass simulation: ReValver offers two amps, Matchbox and Basic 100, designed to work with both guitar and bass.

This shows a split patch, with the convolution-based speaker emulator and the Speaker Construction Set.

Dedicated bass simulation: ReValver offers two amps, Matchbox and Basic 100, designed to work with both guitar and bass. The Basic 100 has individual channels for guitar and bass; the bass channel has different gain and tone stacks, as well as a “deep” switch to alter the bass tone control’s frequency range. The Basic 100 preamp and power amp are also available as separate modules, so you can “mix and match” various preamps and power amps.

ReValver offers two cabinet technologies—a convolution-based model that devours CPU but sounds fabulous, and a more conventional (but very flexible) Speaker Construction Set. The difference is like the difference between convolution reverb and synthesized reverb. The convolution version offers six speaker cabinet impulses specifically for bass, while the SCS lets you “build” your own cabinet with three sliders for dimensions (width, height, and depth), eight different speaker types, and a choice of one, two, or four speakers in the cabinet.

Miking options: The convolution speakers each have impulses taken with four mics—except for the jazz model, which has one. The mics differ from model to model. The Speaker Construction Set offers six different mics, but 20 different models, as some are available with different polar patterns or bass cuts. There are also separate sliders for distance from speaker (up to 25 inches), distance from cone (straight-on to edge), and when run in stereo—which adds a second virtual mic—you can also set the angle between the two mics.

Parallel paths: ReValver uses a rack paradigm and offers a splitter module, making it easy to create a parallel path. However, you can’t split a split.

Dedicated bass effects: There are no effects designed specifically for bass, but the BassBox might as well have been—it produces a wonderful, smooth type of distortion that works extremely well with bass.

Bottom line on the bottom end: The ability to create all kinds of different cabinets, and run them in parallel, gives ReValver a suitability for bass that it might not have otherwise. You can create anything from very clean, straightforward bass sounds to highly processed ones.

Not only is ReValver flexible on the surface, but you can tweak the amps to the point of changing output transformer characteristics, substituting tubes, changing the power supply voltage, setting the amount of amp feedback, and more. It’s really pretty mind-boggling, but if you have the patience to experiment (you can’t listen to tweaks in real time; you have to tweak, listen, tweak, listen, etc.), you can come up with almost any tone on the planet—including bass.

Price: $299.99 MSRP, $250 street

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