Modulation Effects

Modulation effects alter audio signals through controlled variation in time, pitch or phase, creating movement, depth and texture in recorded sound. From analogue chorus and flanging units to digital modulation processors, these devices became central to studio production throughout the 1970s, 1980s and beyond.

This archive includes vintage modulation hardware alongside modern studio processors. From bucket brigade chorus systems to digitally controlled multi-effects units, modulation effects expanded the creative palette of recording and mixing engineers across genres.

Made In U.S.A.

Released in 1971 /

Eventide Instant Phaser

The Eventide Clockworks Instant Phaser was designed specifically to eliminate the costly and tedious job of setting up and implementing the special effect known as phasing or flanging.

Made In U.S.A.

Released in 1975 /

MXR Auto Phaser

The MXR Auto Phaser is a professional phasing unit with low distortion, minimal noise, and a wide range of effects. It features easy operation, low power consumption, and a broad supply range, making it suitable for studio, portable mixing, and PA applications. Unlike flanging, its phase-shift response creates non-harmonic notches in the audio spectrum.

Made In U.S.A.

Released in 1975 /

MXR Auto Flanger

The MXR Auto Flanger is a professional audio delay line designed for true flanging in both portable and custom setups. Its versatile controls ensure ease of use, while its precise time delay creates a musical tonality in percussion, distinguishing it from phasing.

Made In U.S.A.

Released in 1975 /

Eventide Model FL201 Instant Flanger

Flanging may not be a popular effect these days, but back in 1975 when the Eventide Model FL201 Instant Flanger was released, it was. The Eventide Model FL201 Instant Flanger was designed to simulate true tape flanging and offered a much deeper flanging effect than anything previously available, it was widely used on many legendary recordings.

Made In U.S.A.

Released in 1976 /

MXR Model 126 Flanger/Doubler

For more than 30 years now, both engineers and musicians have relied upon the MXR Model 126 Flanger/Doubler as one of best-sounding bucket-brigade* flanging effects ever made. Through its signature flanging, doubling, and delay effects, the MXR Model 126 Flanger/Doubler imprints a very unique sonic signature on guitars, bass, keys, drums, or just about any source needing depth and movement.

Made In Japan

Released in 1978 /

Roland DC-30 Analog Chorus-Echo

The Roland DC-30 Analog Chorus-Echo is a vintage Japanese multi-effect unit combining rich BBD-based echo and chorus with stereo outputs, dual inputs, and extensive remote control options. Known for its warm analogue tone and flexible live performance features, it remains a sought-after classic for musicians and producers.

Made In U.K.

Released in 1979 /

AMS DMX Series Keyboard Interface & Chorus Controller

The AMS DMX Series Keyboard Interface and Chorus Controller is an ultra rare device to add on to the AMS DMX 15-80S Digital Delay. The chorus controller can be used to add functionality and effects to the DMX 15-80S.

Made In U.K.

Released in 1979 /

Bel BF-20 Stereo Flanger

Released in 1978, the Bel BF-20 Stereo Flanger was a true stereo analogue processor with two separate bucket-brigade delay circuits. It combined manual, envelope-controlled and automatic sweep modes with regeneration, external keying, mono operation and opposing left-to-right sweeps, allowing it to process stereo mixes or create stereo movement from mono sources.

Made In Japan

Released in 1979 /

Roland SBF-325 Stereo Flanger

The Roland SBF-325 is a stereo flanger with dual audio delay lines. It has three different flanger effect modes and one chorus mode. It preceded the now famous Roland SDD-330 by two years in terms of rack mount chorus effectors.

Made In Germany

Released in 1979 /

Dynacord TAM 19 Stereo Multiflanger System

The Dynacord TAM 19 Stereo Multiflanger System was released in 1979 and produces unique flanging effects.

Made In Japan

Released in 1980 /

Roland SRE-555 Chorus Echo

The Roland SRE-555 Chorus Echo is a rackmount tape delay based on the RE-501, offering chorus, tape echo and reverb effects. Designed for professional studio and live use, it features balanced XLR and 1/4″ inputs and outputs, a 77dB signal-to-noise ratio, and delays from 0.55 to 1.8 seconds. Its rack-friendly design and advanced noise reduction made it a reliable choice for engineers seeking classic Roland tape echo in a convenient format.

Explore the full Roland Space Echo Series Series

Made In Japan

Released in 1980 /

Roland RE-501 Chorus Echo

The Roland RE-501 Chorus Echo is the final and most advanced tape delay in Roland’s classic series. Combining tape echo, chorus and spring reverb, it features balanced XLR connections, noise reduction circuitry and delays up to 1.8 seconds. Its improved tape transport and sound-on-sound mode made it a studio favourite, delivering warm, analogue effects with reliable performance.

Explore the full Roland Space Echo Series Series