Ensoniq ESQ-1 (metal-case)

Released in 1986

The ESQ-1 was Ensoniq's first synthesizer, and is a very cool synth with a digital wavetable mated with analog filters and VCAs. It's 40 internal sound programs could be augmented with an 80-voice cartridge. The ESQ-1 has a very easy to use sequencer, and you could purchase sequencer expander cartridges to push to note capacity up to 10,000 or 20,000 notes. There were two versions of the ESQ-1 produced - the original had a metal case (the 'ESQ-1' logo is directly over the pitch bend and mod wheels), the second version had a plastic case (the 'ESQ-1' logo is directly over the lowest notes of the keyboard) - and they were functionally identical. A rack version ESQ-M was also produced, and this is a sound module only, with no sequencer.

Ensoniq ESQ-1 (metal-case)
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We stock both NEW and USED parts; all used electronic parts are tested and guaranteed working.

This listing reflects our current inventory and is updated in real time. If a part is shown as Out of Stock, we typically don't know when or if we might have it again - but click on the part for more info, and then you will be able to sign up for an alert when we do have it available again. By including out of stock parts in our listings, we hope to offer customers a more complete and useful resource.

We cannot diagnose repair issues by phone or email. For technical questions, we suggest posting on our Forums, where our techs - as well as other users - can offer help.

Ensoniq ESQ-1 (metal-case) replacement keys
Replacement Keys
AC line filter/cord receptacle
AC line filter/cord receptacle
$4.95 (Part #4015)
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Battery, 3V lithium
Battery, 3V lithium
$14.95 (Part #4128)
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Button, black, Ensoniq
Button, black, Ensoniq
$0.95 (Part #4323)
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Button, gray, Ensoniq
Button, gray, Ensoniq
$0.95 (Part #4324)
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Button, white, Ensoniq
Button, white, Ensoniq
$0.95 (Part #4325)
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Button, yellow, Ensoniq
Button, yellow, Ensoniq
$0.95 (Part #4326)
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Cartridge receptacle, Ensoniq
Cartridge receptacle, Ensoniq
$19.95 (Part #4031)
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Contact spring holder, with adjustment screw
Contact spring holder, with adjustment screw
$0.95 (Part #4055)
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Cover plate, expander port, Ensoniq
Cover plate, expander port, Ensoniq
$5.95 (Part #4766)
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Data entry board, ESQ-1
Data entry board, ESQ-1
$49.95 (Part #4693)
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Display bezel, for ESQ-1/SQ-80
Display bezel, for ESQ-1/SQ-80
$9.95 (Part #4048)
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Display board, Ensoniq ESQ-1
Display board, Ensoniq ESQ-1
$84.95 (Part #3785)
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Display standoff
Display standoff
$0.95 (Part #4788)
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EEPROM cartridge, ESQ-1/SQ-80
EEPROM cartridge, ESQ-1/SQ-80
$59.95 (Part #ESQRAM)
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End cap, left, Ensoniq
End cap, left, Ensoniq
$29.95 (Part #4881)
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End cap, right, Ensoniq
End cap, right, Ensoniq
$29.95 (Part #2776)
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EPROM chip set, Ensoniq ESQ-1 OS 3.5
EPROM chip set, Ensoniq ESQ-1 OS 3.5
$34.95 (Part #ESQEPR)
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Expression/Control pedal
Expression/Control pedal
$49.95 (Part #VP26U)
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Fuse holder
Fuse holder
$4.95 (Part #4014)
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IC, 138065002B keyboard contoller chip
IC, 138065002B keyboard contoller chip
$49.95 (Part #3144)
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IC, 2681 UART chip
IC, 2681 UART chip
$16.95 (Part #4065)
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IC, 4051 multiplexer chip
IC, 4051 multiplexer chip
$2.95 (Part #4319)
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IC, 5503000101 Ensoniq Q-chip
IC, 5503000101 Ensoniq Q-chip
$49.95 (Part #4040)
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IC, 68B09 8-bit processor chip
IC, 68B09 8-bit processor chip
$29.95 (Part #4042)
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IC, 74LS00N quad gate
IC, 74LS00N quad gate
$2.95 (Part #3429)
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IC, 74LS04 hex inverter
IC, 74LS04 hex inverter
$2.95 (Part #3147)
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IC, 74LS10, 3-input NAND gate
IC, 74LS10, 3-input NAND gate
$2.95 (Part #10682)
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IC, 74LS245 bus transceiver
IC, 74LS245 bus transceiver
$2.95 (Part #3395)
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IC, 74LS373 flip-flop
IC, 74LS373 flip-flop
$2.95 (Part #3051)
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IC, 74LS377 octal flip-flop
IC, 74LS377 octal flip-flop
$3.95 (Part #5213)
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IC, 74LS74 dual flip-flop
IC, 74LS74 dual flip-flop
$2.95 (Part #3396)
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IC, CEM3360/AS3360 VCA chip
IC, CEM3360/AS3360 VCA chip
$11.95 (Part #4063)
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IC, CEM3379 signal processor chip
IC, CEM3379 signal processor chip
$37.95 (Part #4064)
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IC, SSM2300 multiplex chip
IC, SSM2300 multiplex chip
$24.95 (Part #4045)
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IC, TL4810BN display driver
IC, TL4810BN display driver
$11.95 (Part #4332)
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Key bushing, rubber
Key bushing, rubber
$0.35 (Part #4344)
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Key contact spring
Key contact spring
$3.95 (Part #4126)
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Key contact springs, pkg of 10
Key contact springs, pkg of 10
$29.95 (Part #4126X)
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Key return spring
Key return spring
$0.75 (Part #KEYSPH)
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Main board, metal-case ESQ-1
Main board, metal-case ESQ-1
$139.95 (Part #4694)
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Musician's Manual, Ensoniq ESQ-1, pdf file
$6.95 (Part #ESQMAN)
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Nut for 1/4-inch phone jack
Nut for 1/4-inch phone jack
$0.95 (Part #4123)
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Phone jack, 1/4-inch, 3-pin PCB mount
Phone jack, 1/4-inch, 3-pin PCB mount
For all except CV Pedal
$9.95 (Part #4546)
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Phone jack, 1/4-inch, 3-pin PCB mount
Phone jack, 1/4-inch, 3-pin PCB mount
For CV Pedal
$7.95 (Part #4178)
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Pitch bend/mod wheel assy, Ensoniq
Pitch bend/mod wheel assy, Ensoniq
$24.95 (Part #4035)
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Pitch bend/mod wheel panel, metal-case ESQ-1
Pitch bend/mod wheel panel, metal-case ESQ-1
$24.95 (Part #4036)
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Pitch bend/mod wheel, Ensoniq
Pitch bend/mod wheel, Ensoniq
$8.95 (Part #4098)
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Potentiometer, 10KB rotary
Potentiometer, 10KB rotary
For pitch/mod wheel
$11.95 (Part #4510)
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Power cord
Power cord
$7.95 (Part #PC)
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Power supply board, Ensoniq
Power supply board, Ensoniq
This power supply must be used with transformer #4887.
$49.95 (Part #4886)
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Power supply board, metal-case ESQ-1
Power supply board, metal-case ESQ-1
This power supply must be used with transformer #4066.
$49.95 (Part #4626)
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Power switch, rocker type
Power switch, rocker type
$5.95 (Part #4020)
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Pushbutton tact switch, 4.7mm, 4-pin
Pushbutton tact switch, 4.7mm, 4-pin
$2.95 (Part #4004)
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Pushbutton tact switches, pkg of 10
Pushbutton tact switches, pkg of 10
$19.95 (Part #4004X)
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Ribbon cable, 16-inch, 26-pin
Ribbon cable, 16-inch, 26-pin
Main board to keyboard
$8.95 (Part #4627)
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Ribbon cable, 9-inch, 20-pin
Ribbon cable, 9-inch, 20-pin
Display board to data entry board
$6.95 (Part #4029)
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Rubber foot, 3/8-inch tall
Rubber foot, 3/8-inch tall
$1.95 (Part #4021)
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Rubber stop for pitch/mod wheel
Rubber stop for pitch/mod wheel
$2.95 (Part #4606)
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Screws, black, hex-head, pkg of 4
Screws, black, hex-head, pkg of 4
For top panel
$4.95 (Part #3382)
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Screws, black, package or 10
Screws, black, package or 10
For keybed (bottom panel)
$3.95 (Part #3850)
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Screws, black, pkg of 5
Screws, black, pkg of 5
For front panel without brass inserts
$4.95 (Part #3240)
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Sequencer Expander Cartridge, 10,000-note, for ESQ-1
Sequencer Expander Cartridge, 10,000-note, for ESQ-1
$44.95 (Part #SQX10)
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Sequencer Expander Cartridge, 20,000-note, for ESQ-1
Sequencer Expander Cartridge, 20,000-note, for ESQ-1
$59.95 (Part #SQX20)
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Slide potentiometer, 10KB, 30mm
Slide potentiometer, 10KB, 30mm
For Volume or Data
$14.95 (Part #4005)
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Slider escutcheon, Ensoniq
Slider escutcheon, Ensoniq
$4.95 (Part #4787)
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Slider knob, Ensoniq
Slider knob, Ensoniq
$6.95 (Part #4022)
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Spring for pitch bend wheel
Spring for pitch bend wheel
$3.95 (Part #4028)
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Spring stop ring, for pitch wheel
Spring stop ring, for pitch wheel
$0.95 (Part #8085)
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Style 41W key, black note
$9.95 (Part #K41WBL)
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Style 41W key, note A
$10.95 (Part #K41WA)
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Style 41W key, note B
Style 41W key, note B
$10.95 (Part #K41WB)
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Style 41W key, note C
$10.95 (Part #K41WC)
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Style 41W key, note D
Style 41W key, note D
$10.95 (Part #K41WD)
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Style 41W key, note E
Style 41W key, note E
$10.95 (Part #K41WE)
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Style 41W key, note F
$10.95 (Part #K41WF)
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Style 41W key, note G
$10.95 (Part #K41WG)
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Style 41W key, top C note
$16.95 (Part #K41WC8)
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Transformer, Ensoniq
Transformer, Ensoniq
This transformer must be used with power supply #4626.
$49.95 (Part #4066)
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Transformer, Ensoniq
Transformer, Ensoniq
This transformer must be used with power supply #4886.
$49.95 (Part #4887)
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Transistor, 2SB507 or NTE153 or 2SB1015
Transistor, 2SB507 or NTE153 or 2SB1015
$3.95 (Part #2577)
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Transistor, 2SD880
Transistor, 2SD880
$2.95 (Part #2955)
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Transistor, MJE172G
Transistor, MJE172G
$2.95 (Part #7151)
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Voltage regulator, 7805
Voltage regulator, 7805
$2.95 (Part #2256)
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