Roland CSQ-600

“Roland CSQ-600

Computer controlled digital sequencer from 1979

Fully working as far as I can tell. Sync and CV/Gate in and out certainly do.

Buttons are a bit more yellow than they used to be.

I’ve owned it since the mid-90s and it’s never had a power button cover during my time with it.”
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Roland CSQ-600

“Roland CSQ-600 Sequencer – new battery, printed manual, free US shipping. Condition is “Used”.

OK, be honest, you thought cv/gate was mostly a real-time thing or relegated to expensive boxes like the Cirklon.
You love your SH-101 and you fondly remember all those cool sequences you used to come up with on it that are now lost forever in time.


The CSQ-600 is one of those cool Roland products they made back when they cared about music and musicians. Yes, it can record and play back cv/gate sequences. Fine.

It can also let you program in rests and glides and you have control over tempo and it syncs up your CR-78 (you do have a CR-78, don’t you? tssk, tssk if not) or some other DIN Sync box.

You also can do some cool real time switching between saved sequences. The CSQ is smart enough to switch on the loop point for seamless transitions plus there’s a metronome so you can press keys in time, and a ton more.

I’m including a printed manual so you can get all the juicy details of how to connect it and use it to the fullest. I also replaced the battery since 40 year old NiCads tend to leak and destroy circuit boards. The original battery in here started to leak, but it wasn’t bad and I cleaned up the area before installing a new battery. You might want to ask sellers of other CSQs if the battery has been replaced. You’re not saving anything if not and likely you’ll be in for an expensive corrosion-damaged repair down the road (just ask PolySix owners, knowhatImean?)”
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Roland CSQ-600

“Another cool product from Roland back when they were still making professional gear for musicians.

It’s a nice cv/gate sequencer that lets you program in slides, dynamically switch between 4 banks of sequences (on the loop point so no abrupt transitions), sync up your CR-78 or TR-808, and more.

This is one of those live/improv pieces that you’ll wonder why you didn’t have one sooner. It’s such an amazing idea but yet there’s nothing on the market today that comes close to this featureset. Nothing stand-alone or in modular land.

Are there limitations? Sure. It’s big; it requires a voltage converter, it ‘only’ stores 600 steps maximum; it’ll likely require a bit of calibration after shipping. Can you live with those limitations? If so, this might be the thing for you.

IMPORTANT NOTE — I have replaced the NiCad battery and cleaned up the small area where it leaked. No circuit damage was found. If you’re buying any old piece of gear that stores patches/info, ask the seller if they have replaced the Nicad and inspected the board for any corrosion/damage from the battery. The CSQ-600 is 40 years old. NiCads leak when they age, especially if they haven’t been used in a while. Why take a chance on a time-bomb that will need repairs down the road just to save a few dollars now?

Also note – this unit has been tested and is working. However, it is 40 years old, so it is being sold as-is. I will gladly provide some spare transistors/ICs that I have around here in case the unit ever does need some work.” Click here to search for synths on eBay

Roland CSQ-600

“Selling a CSQ-600 in fully working condition and was recently serviced and fully recapped with high-quality caps- ready to be used again. There are 4 CV tracks and this unit can be synced or provide master sync to any vintage Roland unit. This is the 100V version so best used with a 120/100V step-down converter.”
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Roland CSQ-600

“Roland CSQ-600

Looks 9.0 of 10
A bit aged but in clean condition, pictures say everything.

Works 10 of 10
Everything works as specified, overhauled before shipping for long life and stability.
Change all electrolytic capacitors and voltage regulators, some short life OpAmps, transistors and logis ICs with new ones.
New memory backup battery installed

Microprocessor 8048#256 installed. ” Click here to search for synths on eBay