MATRIXSYNTH: New Endangered Audio Research Spectravibe Analog Multi-Effects Unit

Monday, July 25, 2016

New Endangered Audio Research Spectravibe Analog Multi-Effects Unit

Spectravibe Korg Minilogue Demo

Published on Jul 25, 2016 Endangered Audio Research Video

"The Spectravibe is an analog multi-effects unit made by hand in America by Endangered Audio Research using only the finest through-hole components.

Here is a demo of the prototype Spectravibe modulating a Korg Minilogue.

Only a few discounted pre-orders remain at the Century Sound Labs Reverb store - find them at

If you miss out on the discounted pre-order, you'll have to pay full retail price and may face some delay in getting your unit as demand is already very high."

Details via Endangered Audio Research

"The Endangered Audio Research Spectravibe is an all-analog multi-effect pedal that is about to become your pedalboard's new secret weapon. Based off the retired Gristleizer stompbox, the Spectravibe is a new evolution in modulation and distortion that is destined to become the pulsating heart of your rig.

In Trem mode, the Spectravibe acts like a tremolo and adjustable overdrive. Two wave shapes are provided: triangle and saw cover the most useful modulation needs. The frequency of the LFO ranges from 4 seconds to well into the audio band - much wider than any typical tremolo. Use the Depth knob to go from a slight warble to a total stutter, and use the Bias control to adjust the FET tube-style distortion. The Gain knob takes your tone from clean and subtle to in-your-face overdrive. In Trem mode, the Blend knob acts like an adjustable high-end air frequency booster. The two expression pedal controls for Speed and Depth allow you to keep

In Vibe mode, the Spectravibe is like vibrato or a Leslie simulator. The unique lush filter has an extended range that brings out the best of your bass, guitar, and keys. Use it on a send while mixing as a "secret weapon" EQ. Go from sweet and shimmery to a bubbly underwater sci-fi filter with the Depth knob, which controls the amount of frequency modulation. The Bias changes the filters center frequency and the Gain allows you to overdrive the filter. The Blend control will add back unfiltered signal that is essential for nailing a watery rotary speaker effect.

In both modes, you can bypass the internal LFO an inject your own modulation source. Use LFOs or envelopes from synthesizers for even more wild and unique effects.

The Spectravibe can be used purely as a versatile distortion box. Turning the Depth all the way down cuts off the modulation completely. The Bias, Gain, and Filter Mix can all be adjusted sans-tremolo for a wide palette of dirty tones. Add that to the high-level amp-driving output provided by the internal 18-volt circuitry, you can use the Level knob to rope in your guitar's preamp into your sound even more.

To use the Spectravibe as a Ring Modulator, set it to Trem mode and turn the frequency of the oscillator into the audio range. The Depth, Bias, Gain, and Blend knobs all interact in a way that make other Ring Mods seem stiff and unmusical. Plug in an expression pedal and you can control the pitch of the oscillator mid-solo. You can even use the Mod input to sync the Ring Mod with a synthesizer.

Great guitarists know about the parked wah tone trick - that is, using a wah-wah pedal as a band-selectable frequency controller. To do this with the Spectravibe, turn the Depth knob all the way down and sweep the Bias until you dial in the perfect tone. Turn the Blend knob all the way to the left to highlight the frequency band you want to boost. Once you've found it, start turning the Blend knob up to mix back in your original signal. Finally, use the Gain control to adjust the grittiness of the filter and the Level control for overall boost to get the perfect amount of bark. It's a tone tweaker's dream!

The Spectravibe runs off a normal 9-volt DC pedal adapter, but the circuitry inside boosts the voltage to +/- 9 DC for a total 18 volts. This is big: no special, expensive, and bulky adapters to keep track of, tons of headroom, and lots of gain. In fact, the Spectravibe has so much gain that you can use it as an interface between your guitar and a modular synthesizer. The switching supply Endangered Audio Research custom-designed for this pedal produces no audible whine that you'd find in cheap adapters. This means you can use any standard tip negative 9 volt supply!

With the versatility and analog tone this pedal provides, the Spectravibe will become the single most important pedal on your board - so important that you'll probably want two!"

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