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

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

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

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

Ensoniq ESQ-1

“Ensoniq ESQ-1 Vintage Keyboard 1987 Metal Case In Original Box.

Box dated 2/9/1987

Includes:

Original manual

Additional book

Power cord

Original foot switch for sustain or sequencer

Original cassette for factory sounds and sequences

Recently replaced battery (now socketed)

Replaced one key

Fully operational

Minor wear and tear.

Number engraved on underside.” Click here to visit listing on eBay

Ensoniq ESQ1

“Ensoniq ESQ-1 Digital Wave Synthesizer – 1985 Serial Number 12389 – Very lightly used and still works well with the following caveats: (1) The integrated battery needs to be replaced. A warning is shown when you turn it on and it won’t remember any changes to sounds programmed in the internal memory or sequences recorded with the builtin music workstation capabilities until this is done. (2) Once recently it failed to work at all and the display just blinked on and off and no sound was produced. This solved itself somehow, possibly a result of allowing the capacitors to discharge. If that is the case, the synth may need service at some point soon to replace bad capacitors, which is a common or even expected problem in vintage synths. Or it may also be due to a loose ribbon cable, another common fixable issue with these synths. Otherwise it works fine, including all buttons and keys, both synth and sequencer. I played with it for several hours before preparing this listing. There are two program memory cartridges that do work as a way to store custom programs even if the battery is not replaced. ” Click here to visit listing on eBay

Ensoniq ESQ1

“1987 Ensoniq ESQ-1 Hybrid analog/digital Wave Synthesizer Keyboard w manual+pedal+box

Super cool 1987 hybrid synthesizer- Very clean- no smoke smell. Excellent condition overall, Everything works beautifully.

Has great large display & super easy to use sequencer with memory expansion cartridge and latest software version already installed. New lithium battery- although when first powered up, it shows low battery warning – but disappears after 1 second- comes with original box, packing, manual, ac cord, and foot pedal.

Keys starting to fade a bit, but all work & none broken-” Click here to visit listing on eBay

Ensoniq ESQ1

“This item has been refurbished twice since my ownership of it. The first repair was a problem with the display no longer lighting up, and this was due to a blown capacitor. The offending capacitor as well as the other old capacitors have all been replaced and the display now works perfectly. The second repair was replacing the lithium battery after getting a low battery warning (the lithium battery on this synth only lasts twenty or so years, and without it you cannot retain patches or sequences after powering down). The lithium battery installed was brand new and should give the synth at least 15 more years of memory. This model comes with software version 3.20 installed, program cartridge, power cord, and this version comes with the SQX-20 sequencer extender already installed, this allows 20,000 more events for the on-board sequencer. The only defect with this unit is a small hairline crack on the bottom of the F4 key, which is easily replaced and entirely cosmetic. I’ve included a picture of the defect. Otherwise for its age (1987) the synth is in impeccable condition and works flawlessly. ” Click here to visit listing on eBay

Ensoniq SQ1

“Hi guys. I’m selling my Ensoniq SQ1 Synthesizer. One of the great vintage synths of from 90s in great condition. The display is a bit dim, and the keys have a yellow tint due to it sage, but works fine. Ensoniq are well known for producing top quality products, and this model is no exception. This also has a sequencer, and ram slot for additional sounds.” Click here to visit listing on eBay

Ensoniq ESQ1

“Ensoniq ESQ1 Vintage Synth Digital Keyboard – it has been in storage for at least the last 10 years so it’s time has come to go.

Everything still seems to work and it sound good (I’m a guitarist so that is not an expert opinion!).

There is a warning that the battery needs replacing – I can see these on batterys Ebay for around £15 so I think that would need to be changed if you wanted keep the internal sounds.
The casing has some scratches, particularly to the rear. I’ve shown the worst in the pics. ”
Click here to visit listing on eBay

Ensoniq ESQ1

“Ensoniq ESQ1 Vintage Synth Digital Keyboard – it has been in storage for at least the last 10 years so it’s time has come to go.

Everything still seems to work and it sound good (I’m a guitarist so that is not an expert opinion!).

There is a warning that the battery needs replacing – I can see these on batterys Ebay for around £15 so I think that would need to be changed if you wanted keep the internal sounds.
The casing has some scratches, particularly to the rear. I’ve shown the worst in the pics.

It is a solid keyboard so I’m putting this for collection only as it would cost a lot to ship safely.” Click here to visit listing on eBay

Ensoniq ESQ1

“Vintage Ensoniq ESQ-1 Digital Wave Synthesizer, Sequencer. This synth is in very good shape. Lots of great sounds on board. Includes one External Program cartridge. We did some basic testing and all appears to be working. We do not know if the battery is original or was replaced at any point in the past, but at this point it’s not an issue. Includes AC cable. As with any vintage electronic instrument, sold as-is. ”
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Ensoniq ESQ1

” Working Ensoniq ESQ-1 digital wave/analog polyphonic synthesizer.
-Nice cosmetics for a nearly-40 year-old keyboard (see the pics). The keys themselves have yellowed, as happens on some plastics as they age. I’ve heard that the keys can be retrobright’ed to restore them to white (I’ll leave that to the buyer).
-All switches & sliders on front panel fully working
-Pitch & mod wheels working as expected.
-New battery
-Basic midi in & out functionality verified
-Sequencer & sustain foot switch functionality verified (foot switch is not included)

I played it, going through the patches and all sounds appropriate. All the keys trigger nicely with appropriate velocity.
I recorded a short sequence and it recorded & played back as expected.” Click here to visit listing on eBay

Ensoniq ESQ1

“in good used working condition, has signs of age and use but not bad. this is for the synthesizer and power cord only. no cartridges/cables /instructions/stand or any other accessories. shows low battery voltage low when powered on.” Click here to search for synths on eBay

Ensoniq ESQ1

“in good used working condition, has signs of age and use but not bad. this is for the synthesizer and power cord only. no cartridges/cables /instructions/stand or any other accessories. shows low battery voltage low when powered on.” Click here to search for synths on eBay

Ensoniq ESQ1

“Ensoniq ESQ-1 Wave Synthesizer- Partially Working. One Octave NON-FUNCTIONAL. Condition is “Used”. This is the METAL case ESQ-1. Rom upgraded to 3.50. New backup battery installed November 2020. Includes 1 sound cartridge. As an extra bonus some labels were installed on the keys so you can navigate your way around those tricky notes.

There’s nothing better than a metal keyboard case because it’s tough and can take a beating so if you’re using this on the road you’ll be pleased with the durability.

The factory screws used to secure the top and keyboard have been replaced and half are missing. One of the top screw sockets has broke (see photo). As mentioned in the headline one octave of the keys are non-functional. This is the second octave section. Except for those 13 notes the keyboard works just fine so if you are a right handed soloist, you will be a very happy with the sounds.” Click here to search for synths on eBay

Ensoniq ESQ1

“Works well.
Occasionally flashes a battery warning which is remedied by replacing or re-seating the calculator battery under the lid and it works as normal.
All other functions and keys etc work correctly. Includes a sound cartridge for storing patches.
In great cosmetic condition.

This is also the nicer (in my opinion) black metal version, not the later plastic one.” Click here to search for synths on eBay