Maestro USS-1 Universal Synthesizer System - 70s Multi-Effect Unit SN 1420

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Maestro USS-1 SN 1558

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"Super Rare, Tom Oberheim designed Maestro USS-1 Universal Synthesizer Unit. Bought this in 1992 and it all worked then, but its been in storage all these years. Powers on and Waveform, Filter, Sample/Hold and Phase working well. Envelope and Subharmonic hard to tell. A first envelope sliders looks unconnected but is there and Sensitivity slider too is missing. Has a bypass toggle switch added by previous owner. Working sliders are really tight but probably just need some WD-40 as they used to work."

Do not spray WD-40 into your synths.

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Vintage Maestro Universal Synthesizer System Unit Full USS1 Tom Oberheim Design SN 1426

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"Unbelievable original USS-1 complete with the original pedal and even paperwork. This is one of the nicest complete sets I've ever seen for sale, and has just been serviced by a local tech. In great cosmetic condition with only a few light marks throughout. Genuinely, you'll not find a better complete unit! You'll not be disappointed."

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Tom Oberheim Designed Maestro USS-1 Universal Synthesizer System SN 1873

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"Up for sale is a (1) very rare Maestro USS-1 Universal Synthesizer System, a big box full of Tom Oberheim effects. The boxed USP speed/freq. pedal is included as well as the owner's manual from 1974. The pedal can act as a wah-wah pedal or as a speed pedal for the sample&hold / phase shifter.

The main unit is been serviced. The service report is part of the sale. Cosmetically it's in near mint condition with only some very minor scratches and little wear and tear (see photos).

A beautiful vintage piece of history in amazing condition! It's a 117v version and the serial number is: 1873."

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Maestro USS-1, Footswitch, and Case

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"Everything works on the unit and footswitch--the indicator light for the Wave Form switch on the pedal is dimmer than the others; all sliders operate smoothly.
It was gone thru by Lingenberg Sound near LA in March of 2016.
He tuned it up and replaced some of the electrolytic caps at that time."

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MAESTRO USS-1 Universal Synthesizer SN 1376 with Homer

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1960's MAESTRO USS-1 by Tom Oberheim SN 1539

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"A beautiful and absolute rare gem, the multi effects unit designed by Tom Oberheim for Maestro/Gibson from the 1960's.

There's very little information on these on the internet but what we do know is that these come up very rarely and particularly in this condition.

Recently professionally serviced and calibrated.
Process any sound source like your drum machines, synthesizers and guitars and just start experimenting!

The built in synth / effects are:
- Waveform
- Filter & Sample/Hold
- Phaser
- Envelope
- Sub-harmonic
- sensitivity control that affects the envelope and sub-harmonic."

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MAESTRO Universal Synthesizer System USS-1 SN 1539

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"Ultra rare MAESTRO USS-1 Universal Synthesizer (OBERHEIM) in very clean conditions PLUS its original travel / studio box.

Recently professionally serviced and calibrated.

It can be used as Synth processor for drum machines, synthesizers, guitars etc.. put any signal through it and then just start experimenting!

The built in synth / effects are:
- Waveform
- Filter & Sample/Hold
- Phaser
- Envelope
- Sub-harmonic
- sensitivity control that affects the envelope and sub-harmonic."

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MAESTRO (Oberheim) Universal Synthesizer System USS-1

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"Ultra rare MAESTRO USS-1 Universal Synthesizer (OBERHEIM) in very clean conditions PLUS its original travel / studio box.
Recently professionally serviced and calibrated.
It can be used as Synth processor for drum machines, synthesizers, guitars etc.. put any signal through it and then just start experimenting!

The built in synth / effects are:
- Waveform
- Filter & Sample/Hold
- Phaser
- Envelope
- Sub-harmonic
- sensitivity control that affects the envelope and sub-harmonic."

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Pristine MAESTRO USS-1

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"SUPER RARE SUPER CLEAN-COMPLETE WITH NO MISSING KNOBS. USED FOR GUITAR, KEYBOARDS, VOCAL MICROPHONES, VIRTUALLY ANY ELECTRIFIED INSTRUMENT INCLUDING BRASS or WOODWIND, SYMPHONIC INSTRUMENTS, THEREMIN etc..., Bob Moog had a hand in the design so we've been told. Serial number label (paper label) which nearly always is ruined or torn/lost, has been wisely preserved under a clear plastic shield and is completely in tack because of it. Very wise indeed.

Rare piece of guitar, synth and electronic music history indeed."

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MAESTRO USS-1 UNIVERSAL SYNTHESIZER SYSTEM

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Maestro USS-1 vintage guitar synthesizer with Control Pedal

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"The pedal includes:
-Waveform. Similar to distortion.
-Filter with Frequency and Brilliance sliders.
-Sample/Hold effect. Similar to a small sequencer.
-Phase. A great sounding phase shifter.
-Envelope with separate attack and decay sliders
-Sub-Harmonic with sustain and percussion switch

-Sensitivity slider
The colored rocker switches turn the effects off and on. They can be used separately or in combo.
The foot control allows you to preset the effect on that you want then turn them off and on as needed."

Pic of the inside below.

SN 1797

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Maestro USS-1 guitar synthesizer system

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Maestro USS-1 guitar synthesizer system

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via the seller: "Maestro USS-1 guitar synthesizer system. I bought it in the mid-1970s from Apex Music in San Diego (wonder where they went?). Reputedly designed by Oberheim for Maestro/Gibson. A real monster of an effects unit, way before the modular flexibility of Boss, Roland, Electro-Harmonix, etc. I used it on several records in the late 1970s-early 1980s at which time it go pre-empted by rack gear (all of which now thankfully is gone). It's been sitting around in the closet basically ever since. Cosmetically it is in EXC- condition as depicted with a few light scratches top bottom front back sides. As was the fashion of the time I engraved my name, social security number and driver's license number on the back lower left side - way before the concept of "identity theft" even was developed!. So now I scraped it off. Electronically the sample & hold works great and is extremely psychedelic; and the phase works OK. The waveform, which is a primitive fuzz control, only barely adds anything to the sound. And I can't get the envelope or the subharmonic (octave lower) to work at all. No pedals. So it is sold "as is" with these caveats as to condition, your tech most likely will be able to get them going without too much problem."

Maestro USS-1 Universal Synthesizer System

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"As some of you may know, this was a Tom Oberheim designed unit."

Maestro USS-1 Synthesizer Fuzz Phaser Oberheim box

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"The USS-1 was created by Tom Oberheim, who designed several other of the early Maestro effects. The USS-1 is not truly a synthesizer as we know them today, this one is really one of the first multi-effect units with a few extras. Also note that this unit is also a bit larger than multi-effect floor units of today as well. Built in power supply, built like a tank, vintage sounds....it's all here! Features: Distortion, Filter Sample/Hold Function, Phaser, Envelope Filter, and Subharmonic Enhancer. A favorite of guitar whiz Al DiMeola."

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Maestro Universal Synthesizer USS-1

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"This is a vintage analog multi-effect that has the following controls:
Waveform (with Intensity slider) a kind of fuzz effect
Filter (with Frequency and Brilliance sliders) envelope filter
Sample/Hold strange step Q filter effect
Phase (with Speed slider) Great sounding too
Envelope (with Attack and Decay sliders) another yet different envelope filter.
Sub-Harmonic (with a Volume slider and sustained or percussive switch) lower octave in quick hit or swell.
then there is also a slider for Sensitivity that works on the Envelope and Sub-Harmonic, basically increasing the volume of the effect compared to the natural sound.

Instrument plugs into the 1/4" furthest from the plug/transformer, closest to goes to the amp. No clue what the middle 2 do, and have never found any info on them."

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Maestro Oberheim Uss-1 Synthesizer Pedal

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Are those 1/4 inch jacks in the back?

Maestro Oberheim Uss-1 Synthesizer Pedal

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"The USS-1 was created by Tom Oberheim, who designed several other of the early Maestro effects. The USS-1 is not truly a synthesizer as we know them today, this one is really one of the first multi-effect units with a few extras. Also note that this unit is also a bit larger than multi-effect floor units of today as well. Built in power supply, built like a tank, vintage sounds....it's all here! Features: Distortion, Filter Sample/Hold Function, Phaser, Envelope Filter, and Subharmonic Enhancer. A favorite of guitar whiz Al DiMeola."

You can find some shots of the inside of a Maestro in this post.

MAESTRO VINTAGE GUITAR SYNTH EFFECT PEDAL

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"vintage Maestro Universal Synthesizer System USS-1 manufactured by Oberheim Electronics, serial # 1938. This vintage multi-effect features several of the best Oberheim Maestro effects in one amazing unit. The USS-1 features several effect sections, including: Waveform (fuzz, texture), Filter (envelope), Sample/Hold (the famous random arpeggiator), Phase, Envelope (an additional envelope filter), and Subharmonic."

inside a Maestro