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ARP Quartet Project Machine

“Not sure if working, however red light at the back comes on when plugged in. Condition not great as can be seen from pictures, however could be restored, 2 buttons missing ”
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ARP Quartet

“There is a bend in the power switch part, but the operation is normal.■Condition: B: Fairly scratched & used, but no problem in normal use.” Click here to visit listing on eBay

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ARP Quartet

“From a house clearance and in literally as found,untouched and uncleaned,scruffy condition.Powers up,but I honestly have no means to test further,and selling as not working as a result,with no returns.” Click here to visit listing on eBay

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ARP Quartet

“ARP Quartet Analog Synthesizer up for sale. This Quartet is in fantastic working condition and it looks great! The instrument has been fully serviced and tested by our professional technician, and is backed by our 3-month warranty. ”
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ARP Quartet

“ARP Quartet Analog Synthesizer up for sale. This Quartet is in fantastic working condition and it looks great! The instrument has been fully serviced and tested by our professional technician, and is backed by our 3-month warranty.

The ARP Quartet is, in fact, identical to the Italian-made Siel Orchestra. ARP bought, relabeled and sold it as the Quartet without changing much. It’s a 4-part orchestral synthesizer with 4 sections: Brass, Strings, Organ and Piano. These 4 tone color families can be tweaked and played individually or two can be played simultaneously. Selected presets will light up LEDs to show you which sliders and buttons can be used to modify the current section. The synth itself is somewhat limited–there is no external control, no pitch/mod wheel and few editing parameters. However, it sounds very good and, ultimately, it is a classic analog synthesizer.

In very good working shape, with some normal cosmetic signs of use (see photos). ”
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ARP Quartet

“ARP QUARTET Synthesizer. Vintage.

Vintage ARP Quartet in Touring Case. Original. I have had it for about 10 years I have only been able to play it a couple of times, so it is ready for a new home. This vintage treasure has a very unique filter and sound. If you know you know…This one has the multi-colored switch tops, It comes in a super strong touring case. ” Click here to visit listing on eBay

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ARP Quartet

“ARP Quartet Very good condition. Everything working
fine except the attack slider and led on the brass section.. very probably a simple fix for someone who knows.
Every other slider/switch working fine and as expected.. it’s a lovely sounding machine and I found myself playing on it for ages before putting this listing on.” Click here to visit listing on eBay

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ARP Quartet

“Vintage ARP Quartet 49 key synthesizer. Powers on and some keys play, but this keyboard is in rough shape and is going to need some love to be fully functional again. I didn’t test it too thoroughly, but it looks like the Piano, Brass and Organ sections work, Strings do not. Some keys do not respond (dirty contacts?) and one key is damaged. Sliders are dirty and one is missing.” Click here to visit listing on eBay

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ARP Quartet

“Vintage ARP Quartet 49 key synthesizer. Powers on and some keys play, but this keyboard is in rough shape and is going to need some love to be fully functional again. I didn’t test it too thoroughly, but it looks like the Piano, Brass and Organ sections work, Strings do not. Some keys do not respond (dirty contacts?) and one key is damaged. Sliders are dirty and one is missing.” Click here to visit listing on eBay

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ARP Quartet

“Hello there! Cleaning house a fair amount, and pardon the terrible pics this keyboard is in the store room right now. This Quartet is completely functional and all keys were sounding when I last played it about a year ago or so. The biggest things to note are general scuffing on the wood ears, the power supply has a small crack in the outer red plastic (though that doesn’t effect the synth’s ability to operate of course), and the volume slider appears to have been bypassed in favor of a little potentiometer sitting to the right of the slider. I imagine that linear pot probably wore out and someone didn’t want to bother with a 1:1 replacement.” Click here to visit listing on eBay

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ARP Quartet

“Hello there! Cleaning house a fair amount, and pardon the terrible pics this keyboard is in the store room right now. This Quartet is completely functional and all keys were sounding when I last played it about a year ago or so. The biggest things to note are general scuffing on the wood ears, the power supply has a small crack in the outer red plastic (though that doesn’t effect the synth’s ability to operate of course), and the volume slider appears to have been bypassed in favor of a little potentiometer sitting to the right of the slider. I imagine that linear pot probably wore out and someone didn’t want to bother with a 1:1 replacement.” Click here to visit listing on eBay

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ARP Quartet

“Arp Quartet Analog subtractive synthesizer with AC cable Used F/S” Click here to visit listing on eBay

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ARP Quartet

“I have owned this ARP Quartet from new and it has been well looked after and the condition of the wooden and metal casing and paintwork is very good for the age. It has always been stored in its original box but the box is looking very worn now. There is a small area of flaked off paint on the rear of the keyboard that is visible in one of the photos. The sound is very good but there are two issues that i can see that you might want to get sorted if you purchased the keyboard. The volume slider dosen’t adjust the volume any longer so i adjust the volume via my amp so i have never bothered to get it fixed. All sounds and effects work except for the celest on the organ section. The slider has come loose and the celest sound is permanently off. This might need a new switch fitting.”
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ARP Quartet

“I have owned this ARP Quartet from new and it has been well looked after and the condition of the wooden and metal casing and paintwork is very good for the age. It has always been stored in its original box but the box is looking very worn now. There is a small area of flaked off paint on the rear of the keyboard that is visible in one of the photos. The sound is very good but there are two issues that i can see that you might want to get sorted if you purchased the keyboard. The volume slider dosen’t adjust the volume any longer so i adjust the volume via my amp so i have never bothered to get it fixed. All sounds and effects work except for the celest on the organ section. The slider has come loose and the celest sound is permanently off. This might need a new switch fitting.” Click here to visit listing on eBay

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ARP Quartet

“I have owned this ARP Quartet from new and it has been well looked after and the condition of the wooden and metal casing and paintwork is very good for the age. It has always been stored in its original box but the box is looking very worn now. There is a small area of flaked off paint on the rear of the keyboard that is visible in one of the photos. The sound is very good but there are two issues that i can see that you might want to get sorted if you purchased the keyboard. The volume slider dosen’t adjust the volume any longer so i adjust the volume via my amp so i have never bothered to get it fixed. All sounds and effects work except for the celest on the organ section. The slider has come loose and the celest sound is permanently off. This might need a new switch fitting.” Click here to visit listing on eBay

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ARP Quartet

“PHYSICAL CONDITION: Very Good – In great condition. Considering that this is a vintage item, there are some signs of wear. There are a few minor scuffs around the device mainly on the wooden side panels. One of the brass attack faders is missing a cap as well. Otherwise, everything is looking nice and ready for more use. The overall condition is very good. WORKING CONDITION : Very Good – All keys, all buttons, and all controls are in fine working order. Overall working condition is very good. ” Click here to visit listing on eBay

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ARP Quartet

“I have owned this ARP Quartet from new and it has been well looked after and the condition of the wooden and metal casing and paintwork is very good for the age. It has always been stored in its original box but the box is looking very worn now. There is a small area of flaked off paint on the rear of the keyboard that is visible in one of the photos. The sound is very good but there are two issues that i can see that you might want to get sorted if you purchased the keyboard. The volume slider dosen’t adjust the volume any longer so i adjust the volume via my amp so i have never bothered to get it fixed. All sounds and effects work except for the celest on the organ section. The slider has come loose and the celest sound is permanently off. This might need a new switch fitting.” Click here to visit listing on eBay

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ARP Quartet

“ARP Quartet Brass / Strings / Organ / Piano Analog Synthesizer PARTS READ DESC. Condition is “For parts or not working”. NOT fully tested. This is being sold FOR PARTS. Plugged in and lights all turn on. I did not have any speaker to test this with. Some of the knobs are broken or hard to move. The brilliance knob is completely missing, the master volume switch is hard to push up, and the cello knob has come loose. The end of the power cable where it plugs into the machine appears to be broken and has exposed wires. Due to these errors this is sold AS-IS NO RETURNS.” Click here to visit listing on eBay

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ARP Quartet

“ARP Quartet Brass / Strings / Organ / Piano Analog Synthesizer. Condition is “Used”.” Click here to search for synths on eBay

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ARP Quartet

“item has a few issues, vibrato doesn’t work, and there is no poliphony”
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ARP Quartet Project Machine

“ARP Quartet Synth. I bought this for parts for another synth. This is NOT working and is being sold for parts or as a restoration project. Condition is for parts or not working. Collection in person only as it is VERY heavy.”
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ARP Quartet

” The synth was completely gone over by a tech and everything works and functions as it should. Has a small 3 inch crack or right side of wood but does not affect functionality ” Click here to search for synths on eBay

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ARP Quartet Project Machine

” Arp quartet. NOT WORKING!!!!! For parts or repair. Condition is Used. Collection in person only due to size and weight.

The power light comes on but apart from the synth produces no sound etc…….possibly a project for someone with an interest in old electronics.

This is an uncommon instrument so hopefully someone can bring it back from the dead!”
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ARP Quartet

“Arp quartet. NOT WORKING!!!!! For parts or repair. Condition is Used. Collection in person only due to size and weight.

The power light comes on but apart from the synth produces no sound etc…….possibly a project for someone with an interest in old electronics. ” Click here to search for synths on eBay

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ARP Quartet

“This beautiful Arp Quartet has been professionally serviced by my synth tech that has over 20 years experience with gear repair. The power supply section has been recapped with audio grade capacitors, all sliders cleaned and lubed, all switch contacts cleaned. All functions work as designed and there are no functional issues, no exceptions.” Click here to search for synths on eBay

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ARP Quartet

“Fully working ARP Quartet 4-Octave synthesizer with 4 different instrument groups, as seen with color-coded controls. Different instruments activated while taking photos by pressing pushbuttons, LED’s above illuminate to show active sections. All keys play fine.

Overall cosmetic condition is good to very good. Some scratches seen in metal parts and wood. Some rusting seen in metal portions.

Missing one plastic knob for Vibrato Speed. Slider here works fine.”
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ARP Quartet

“Bought in 1980 with all the good intentions to pick up my keyboards sessions from my youth. Played a few times for fun then put into storage in 1985 in original box where it has been ever since. Extremely lightly used.” Click here to search for synths on eBay

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ARP Quartet

“Fully working ARP Quartet 4-Octave synthesizer with 4 different instrument groups, as seen with color-coded controls. Different instruments activated while taking photos by pressing pushbuttons, LED’s above illuminate to show active sections. All keys play fine.

Overall cosmetic condition is good to very good. Some scratches seen in metal parts and wood. Some rusting seen in metal portions. ” Click here to search for synths on eBay

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ARP Quartet

“The Arp quartet works great, however one key C sharp does not work. The exterior has minor scratches but it is in great shape for its age. All scratches are displayed in the pictures. The synthesizer works almost like new and is the cheapest on the market. Will ship professionally and immediately!” Click here to search for synths on eBay

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ARP Quartet

“Quartet ARP Vintage Synthesizer. Condition is used. Been stored for some years but is working well. Item is rare. The appearance has some cosmetic blemishes due to age and it would benefit from a service. The ARP is identical to the Italian made Siel Orchestra. 4 part orchestral synthesiser with four sections – brass, strings, organ and piano.”
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ARP Quartet

“Very good condition as seen (just a few small scratches), has back panel CV/gate controls. CV = 1V/Oct, Gate = +15V. Note: the octave switch had been replaced by a three-position knob, this is actually more robust and easier to use than the original design, for fast range switching while playing live. Has the nicest sounding filter especially at high resonance levels among several whiteface Odyssey’s we’ve encountered, perhaps because it’s been very well calibrated. Hate to see this one go!”
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ARP Quartet

“The Arp quartet works great, however one key C sharp does not work. The exterior has minor scratches but it is in great shape for its age. All scratches are displayed in the pictures. The synthesizer works almost like new and is the cheapest on the market.”
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ARP Quartet Project Machine

“ARP Quartet keyboard & string machine, classic fully-polyphonic machine from the 80’s pre-MIDI era. This unit won’t power up – it worked until going into storage several years ago, so I suspect someone who knows about electronics can resurrect it, but that’s beyond my ability. There is some slight gig damage to some of the switches on the front. You can select from brass, strings, organ and piano on the front, but by pushing the buttons together, you can have any two in combination. If you can get it working.”
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ARP Quartet

“Classic ARP QUARTET Analog Polyphonic Synthesizer Works Perfectly.

Excellent cosmetic condition and plays nicely – ready for gigs or studio use.”
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ARP Quartet

“Vintage ARP Quartet Synthesizer.. Condition is Used. Bit scruffy but all the lights come on… highly desirable!”
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