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Ensoniq ESQ1

“Selling my beloved ESQ-1 for parts or repair. The main issue with it is the sound is barely audible which appears to be a fault with the filters. My hunch is that the fault is in the power supply or the power to the filter chips, as it’s unlikely that all 8 filter chips would fail simultaneously.

When going to the hidden Filter Calibration page, the display values are all blank (instead of eight 3-digit values ~140 like it’s supposed to display, and the unit needs to be power cycled to exit the page.

Everything else works great- keys (via midi), buttons, faders, and display. There’s a new RAM battery (2x lithium AA in a battery pack with an On/Off switch) wired to the main board.

Display works perfectly and looks much clearer in real life than in the photos” Click here to visit listing on eBay

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Ensoniq ESQ1

“ESQ-1 Original owner. Never out on gigs. Foot pedal, two cartridges and manual included. Contacts for a couple high keys seems to be dirty, can be intermittant. I suspect it needs cleaning. Will probably also need an internal battery. It was replaced once, but long ago.
Works well, as near as I can tell.
Would prefer local pickup, but willing to talk about that.” Click here to visit listing on eBay

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Ensoniq ESQ1 Project Machine

“For sale is an Ensoniq ESQ-1 (plastic case version) synthesizer in non-working condition. There are problems with both the display board (display controller) and the main board that prevent it from booting. The rest of it works well, but I am unable to fix it it myself. Plenty of good parts in here. Buy it to fix up or use it for parts. Local pick up only.” Click here to visit listing on eBay

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Ensoniq ESQ1

“Pre owned. Overall good condition. Item has some signs of cosmetic wear from previous use, but is fully operational and functions as intended. There is a low battery warning that pops up for about 1 second when you turn the synthesizer on.”
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Ensoniq ESQ1

“Digital synth with great sounding analogue filters and other analogue features. Great for retro sounds, brass sounds, pads, interesting percussion and so on.

Synth has been well loved and is in good condition. Selling with a good quality soft-lined hard flight case.” Click here to visit listing on eBay

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Ensoniq ESQ1

“Ensoniq ESQ-1 – The early all metal version. This is the keyboard all over Kanye West’s College Dropout album. Really fat basses and pads. This sounded great a few months ago, but now the battery died and it only loads one program. I suck at soldering so it’s sold as-is. A new battery will bring it right back to stock.
There are a few nicks here and there but overall it’s in good condition. I tried to mistakenly clean some keys with nail polish remover and ended up making it worse. Those keys are smudged from the remover. Sold as-is needing a battery.”
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Ensoniq ESQ1

“I tested this keyboard….. buttons work…. wheels work…. sounds work….Sustain pedal included…i was able to fix the problems…” Click here to visit listing on eBay

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Ensoniq ESQ1 Project Machine

“Ensoniq ESQ-1 Digital Wave Synthesizer with analog filter. Recently purchased from the original owner as a “fixer upper” as after years in storage the unit wouldn’t power up successfully. The VFD display would flicker briefly and go no further. I’m assured the synth had only been used at home and not gigged. I suspected a power supply issue, possibly needing a recap or service. I ended up swapping the keybed to repair another ESQ-1 with yellow keys.

So this listing is for an unexpanded ESQ-1 (earlier metal body version) with an unconfirmed fault and flat backup battery. The sale includes the keybed from the other unit but with all white keys removed as I planned to whiten them. You will receive all of the white/yellow keys (undamaged) and springs to rebuild the keybed which worked without any issues. Photos show what “might” be displayed on the screen when powered up; most times it will just flicker briefly. This suggests a relatively simple and low-cost repair for a competent tech. Clean unit with no damage. Selling for spares or repair with no returns.”
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Ensoniq ESQ1 Project Machine

“The item up for sale is not tested for functionality as we do not have the capability to test; Unit has been inspected and the results are as follows. Intended for Reuse or Repair/Refurbishment, not for Recycling or Disposal “Vintage Ensoniq ESQ-1 Digital Wave Synthesizer & Voice Crystal 1 Cartridge.”” Click here to visit listing on eBay

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Ensoniq ESQ1

“Ensoniq ESQ1 for sale. We paid our tech for the several hours of skilled labor required to service this ESQ-1. The end result is a professionally refurbished ESQ-1 that’s more expensive than most, but also with new battery and working perfectly, unlike most. The display works fine, they just photograph like that. ”

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Ensoniq ESQ1

“This auction is for a Ensonic Model ESQ-1 61 Key Digital Wave Synthesizer. Comes with one cartridge and the power supply cord. Normally it will cost around $35 to $85 for Fedex shipping to the lower United States. Worldwide Shipping also available through Ebays Global Shipping Program.” Click here to visit listing on eBay

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Ensoniq ESQ1

“Ensoniq ESQ-1 Digital Wave Synthesizer.

Works Great. Message popped up when you power on that battery needs charged. Not sure if it will need replaced or not. Does have some cosmetic flaws, but overall nice used condition. ” Click here to visit listing on eBay

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Ensoniq ESQ1

“Ensoniq ESQ1 Digital Wave Synthesizer W/Basic Program Cartridge and Sustain Pedal. Battery was serviced before I bought it in 2015 and I’ve had no problem with it.”
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Ensoniq ESQ-1

“Works great but will need a new internal battery soon they cost about $20.”
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Ensoniq ESQ1

“Ensoniq ESQ-1 synthesizer keyboard. Has a sample cartridge included. Unit powers up. Have had stored in a closet for sometime and trying to do some spring cleaning and make some room. Not a professional ebay seller nor a certified electronic keyboard specialists.” Click here to visit listing on eBay

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Ensoniq ESQ1

“Ensoniq ESQ1 Digital Wave Synthesizer W/Basic Factory Orch Sfx Program Cartridge.”
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Ensoniq ESQ1

“Up for sale is a Ensoniq ESQ-1 Digital Wave Synthesizer . This synthesizer is used and in great condition. Will come in hard case with power cable.” Click here to visit listing on eBay

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Ensoniq ESQ1

“Pre-owned. Perfect working condition, good cosmetic condition. Please review pictures for detail.” Click here to visit listing on eBay

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Ensoniq ESQ1

“Tested, working and very much enjoyed Ensoniq ESQ-1 Synth 

Fitted with sqx-10 sequencer expansion

A couple of minor cosmetic issues that can be seen in the photos:

– Plastic data entry slider knob missing (doesn’t affect operation) 
– Cart B button is missing (I think it’s actually in the synth but I don’t have time to dissemble and retrieve). Doesn’t affect usage unless Carts are being used

I originally imported this from the USA so for UK use it works with a transformer plug. The person who sold it to me had it serviced before I purchased it in 2014. 

The transformer plug hums a little bit (this doesn’t affect sound coming out of the synth it’s just the ambient sound in the studio). It wasn’t enough to bother me so I didn’t ever replace it but should be an easy replacement if needed. ”
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Ensoniq ESQ1 Project Machine

“ensoniq esq-1. Has no sound output. No parts have been removed.

It powers up and switches between opening presets. Buttons on right seem to be working but not thoroughly tested. ”
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Ensoniq ESQ1

“This is an excellent keyboard, not only because you can endlessly modify the many sounds that are available for it, but also because it’s an 8-track sequencer as well, with mixing and song-sequencing ability too. I’ve written so many songs on this keyboard over the years, and have gotten much joy from owning it. Really cool sounds are built in, and this sale includes sound cartridge #1, which initlaly came with the keyboard.” Click here to visit listing on eBay

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Ensoniq ESQ1

“Ensoniq ESQ-1 Synth

Decent condition for age, could do with a dust down. Not flawless. Main imperfection is some rust building on outputs. Please see detailed pics.

All buttons change nice first time. Battery low message on startup.

As far as we can test it is fully functional, BUT we do not know how to test every function so please ask us regarding anything specific and we will test.” Click here to visit listing on eBay

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Ensoniq ESQ1

“Ensoniq ESQ-1 Digital Wave Synthesizer w/ Power Cord – Tested, Works! VINTAGE. Chipset upgraded. Comes with sound cartridges. Has some cosmetic wearing. Works great!” Click here to visit listing on eBay

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Ensoniq ESQ1

“Ensoniq ESQ-1 Digital Wave Synthesizer W Analog Filter Sequencer Poly Synth.

Cool unit in working condition comes with padded case and pedal. I do not have any cartridges with it. View pictures for more details. Thanks ”
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Ensoniq ESQ1

“Ensoniq esq-1 digital midi sequencing synthesizer Esq 1. E key is broken but an easy cheap fix ” Click here to visit listing on eBay

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Ensoniq ESQ1

“Ensoniq ESQ-1 Synthesizer Keyboard – with Case And 8 Floppy Discs.

8 floppy disks included

One of the boxes latches is broken but there is little to no damage on the actual keyboard” Click here to visit listing on eBay

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Ensoniq ESQ-1

“Ensoniq ESQ-1 Used Digital wave Synthesizer Keyboard.

Model ESQ-1

Rating: 120vac 60 Hz .5A 60 w

Date:08/24-87” Click here to visit listing on eBay

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Ensoniq ESQ-1

“Ensoniq ESQ-1 Synthesizer w/ 1 ROM expansion card & Power Cord 1987.

Serial number is ESQ-21410-S

Date: 03/12/87

All keys work except the lowest key on the left. I can send a video of all other keys working if requested. I am not a keyboard player so I can speak to the programming parts of this instrument. The different voicings seem to work.

Comes with hard shell case. (Heavy)” Click here to visit listing on eBay

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Ensoniq ESQ1

“Ensoniq ESQ-1 Digital Wave Hybrid Analog Synthesizer Keyboard with SQX-10 Sequencer Expander and ESQ-80 Volume 5 Voice Cartridge. 8 voices. 3 oscillators, 1 VCF, 3 LFOs, 4 envelope generators per voice. 61 unweighted velocity sensitive keys, pitch and modulation wheel.

The synthesizer is functional. All 8 voices work. All keys and buttons work. Sequencer works. MIDI works. The voice cartridge works. I installed a brand new memory backup battery. Included is power cord. The stand is not included.

The synthesizer is in relatively good overall cosmetic condition considering its age (over 30 years old). Used in non-smoking environment. There are various blemishes on the case, missing paint and minor scratches. Please take a look at the pictures.” Click here to visit listing on eBay

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Ensoniq ESQ1

“Vintage Ensoniq ESQ-1 Synthesizer workstation. Metal case version. Great condition. Latest OS. Comes with a MusicPack MR-1 Cartridge full of extra sounds. And a hard case.”
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Ensoniq ESQ1

“Ensoniq ESQ-1 Digital Wave Synthesizer with Cartridge & Manual – Tested / Works

Very good, especially for being 35+ years old.

Includes synthesizer, sound cartridge, manual, and power cable.

Ships safely in a case and outer box.” Click here to visit listing on eBay

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Ensoniq ESQ1 Project Machine

“Vintage Ensoniq ESQ-1 Synthesizer with 2 Cartridges for Parts or Repair. Unit powers up and all of the keys produce sound. Modulator and Pitch controls work. The display shows only digits along the top and bottom edges. Pressing buttons produces digits on the display but the sound does not change. This is the plastic case version with the metal heat sink on the back. There is one internal and one external cartridge. The external cartridge is missing its label. Data slider is missing its cap. Unit has scuffs and scratches. Sold as is for parts or repair.” Click here to visit listing on eBay

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Ensoniq ESQ1 Project Machine

“Vintage Ensoniq ESQ-1 Digital Wave Synthesizer Sequencer Keyboard

SOLD AS-IS
FOR PARTS / TO FIX
UNTESTED – NOT SURE WHAT’S WRONG WITH IT ” Click here to visit listing on eBay