Mu-Tron Phase II (1974/75)
Only two Phase II units were produced by Mike Beigel as prototypes for the eventual Mu-Tron Bi-Phase – though the Phase II had some extra features that were deleted on the production model Bi-Phase. According to Mike (and the Phase II’s box), one of the original two was given to Mick Jagger of The Rolling Stones at a rehearsal at Stuart Air Force Base during their 1975 US Tour. Mike has retained the other Phase II, but the Stones’ unit #2 has yet to be heard from in over 40 years…
Mu-Tron Phase-Synthesizer (1973)
This was made sometime during 1973 – it’s actually a flanger using the earliest 32-stage “bucket-brigade” chip. This unit had controls for every parameter we could think of! This unit was used by jazz fusion guitarist Larry Coryell (of The Eleventh House) to record the song “Low-Lee-Tah” from the 1974 album Introducing the Eleventh House with Larry Coryell.
Mu-Tron Bi-Phase Rackmount Prototype (1978)
This was one of the last prototype units that Mike Beigel created for Musitronics Corp. (along with the E-Phasor below) in an effort to stabilize the company’s downturning financial state. According to Mike, since Musitronics already produced studio-quality sound modifiers, it seemed a logical move to create products specifically tailored to the effects racks of music studios. Musitronics Corp. opted not to pursue rackmount-sized products and this version of the Bi-Phase was never produced.
Mu-Tron E-Phasor Rackmount Prototype (1978)
Mu-Tron III Prototype
Mu-Tron VII Prototype (1978)
[Best_Wordpress_Gallery id=”38″ gal_title=”Mu-Tron VII”]
Mu-Tron Octave Divider Prototype
Mu-Tron Oc-Tron MK IV Prototype
Mu-Tron Phasor Prototype
First prototype of the Mu-Tron Phasor with transconductance amplifier processing.
Mu-Tron Flanger Prototype (1977/78)
A flanger in an Octave Divider package 1977-78. The Mu-Tron Flanger was manufactured in 1978 as a pedal-controlled unit, not this package style.