Quick Hit: Rainger FX Dr. Freakenstein Dwarf Bass Review

This mini-but-monstrous bass fuzz and its manipulative assistant make for one dynamic duo.

Say hallo to my leettle fren! I couldn’t not say it—sorry—but more on Igor in a moment. The Dr. Freakenstein Dwarf Bass is a mini-format bass fuzz that dares to be different—I mean really dares to be different. The simple control set looks straight out of a ’60s sci-fi show and consists of a thumbwheel for volume and an oversized knob for governing the pitch of the harmonic overtones. At the front end of the pedal lives the LFO push-button that, when activated, sweeps the overtone up and down in a spaced-out, whoosh-y manner. The mix button to its right takes the pedal from all-out fuzz to about a 3:1 fuzz-to-clean-signal ratio when engaged. Igor is the dual-sensitive (just flip it over) mini-expression pad that manipulates the overtone or sparks a quicker modulation speed when the LFO is engaged.

The Dwarf Bass serves up fire-breathing grit, so look elsewhere if you’re in need of kinder, gentler fuzz. With the overtone dial at 1 o’clock, LFO button out, and the mix button engaged, I created sweet chaos with the help of Igor that likely scared the shit out of anyone within 100 feet of my house. I literally made sounds akin to a robotic troll squelching in terror (or pleasure) atop a smoking, consistent fuzz tone that inspired riffs galore apt for grindcore to alt-metal EDM. While a light dusting of fuzz isn’t available, it’s an impressively musical (albeit extreme) fuzz nonetheless. Take a spin yourself and you, too, may get hooked going down the wild-ride rabbit hole of this little box—and its little friend.

Test gear: Orange O Bass, Gallien-Krueger 800RB head, Orange OBC212 cab, Focusrite Scarlett 2i4
Recorded direct into Focusrite Scarlett 2i4 interface into GarageBand.
Clip 1 - Overtone dial at 1 o’clock, LFO button out, fuzz/clean mix button engaged


Igor. Compact and rugged. Fantastically raucous and weird bass-fuzz tones on tap. Internal passive/active switch. Built-in noise gate.

Can’t really call it a versatile fuzz. Igor can be difficult to manipulate with precise control, especially on varying surfaces. Note: Neither “con” bothered me in the slightest.


Rainger FX Dr. Freakenstein Dwarf Bass


Ease of Use:



It's time for everyone's favorite giveaway, STOMPBOXTOBER! Enter here for your chance to win the just announced PRS Mary Cries Optical Compressor! Come back tomorrow for another chance to win.

Read MoreShow less

With its powerful speaker and long-lasting lithium battery, the Nomad is the ideal solution for portable premium tone.

Read MoreShow less

A line of stompboxes designed by PRS.

Read MoreShow less