Roland TB-303

“roland tb 303.the original and best,, have the silver with roland in orange carry case also and a hard case with lots of paddind nice tight fit the 303 has colin fraser of seqentix fame midi kit fitted and it keeps time amazing great midi bassline kit also when colin fitted this he replaced all the tack switches as well sounds lovely and no double pressing annoying tack switches slso manual etc really dont want to sell it as ive had it 25 years but needs must seen them go for up to 4000 as of late get6 ithe origian and best sounding little siler box,,” Click here to visit listing on eBay

Roland TB-303

” Original Roland TB-303 – Bass synthesizer -Good Condition.
Has been in home studio and storage,hardly used.
Lights up when plugged in so should work.
Has modifications:
1 Midi in and out-comes with leads
2 Appears to have a CV input for the filter
Sequential MIDIBass MIDI modification
Some superficial marks and scratches”
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Roland TB-606 with Roland TB-303 Project Machine

“Roland 303 synth (Repair/Spare) – Roland 606 drum machine (working).

Roland 303 synth kenton midi upgrade not working. had the pots and switches no longer working, bad connection. I think was also a problem never got to having checked out with regards to clearing, writing tracks. it played OK from stored memory, pots were good you could play around with it hooked it up to the 606. if you know a synth tec that has good experience knowledge, and you’ll have a working 303. purchased the pair from friends friend only intend to keep short while… though they both rolands OK… but clearly not.

Roland 606 drum machine in working order.”

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Roland TB-303

“The TB303 Bass Line was designed to some extent as a partner-in-rhythm for the TR606 Drumatix drum machine (also available if interested)

– Was used in home studio only from new

– Has been in dry storage for many years (without batteries)

– Fantastic condition with NO wear marks on ether the buttons, knobs or transfers

– No modifications, all original

– Supplied with the original Roland carrying case, but unfortunately the original box has long gone

– Batteries included :-)” Click here to visit listing on eBay

Roland TB-303

“The TB-303 is a bassline synth released, manufactured between 1981 and 1984. Designed to simulate bass guitars, it has a single oscillator which produces either a ‘buzzy’ sawtooth wave, or a ‘hollow’ square wave. Only 10,000 units were ever manufactured by Roland, it was unpopular to its target audience and was discontinued just 3 years after release, with the remaining units sold off cheaply.

The TB-303 includes a mini one-octave ‘piano’ keyboard, each key complete with a red light. In the same way a drum machine plays patterns of drum sounds, the 303 does the same thing with basslines. Using the keyboard to enter the correct note and its length, the user can program a bassline one note at a time which will then play along in time with the drum beat.

Six rotary controls let you manipulate the tone of the TB-303 so you can tweak the sound to your personal taste.

This TB-303 comes with a Kenton Pro 2 MIDI to CV dual channel converter and connecting 3.5mm connectors which have been re-labelled.

This unit was from a commercial recording studio that closed down in the 90s and has been in storage since closing. It has now been recently serviced ready for sale and is in generally great condition with only some minor marks as to be expected from used studio equipment.

Included is the Roland TB-303, Kenton Pro 2 and connecting 3.5mm cables to connect the two. No original boxes, power cables or manuals supplied. Digital copies of the manuals can be found on the internet. The items will be securely packaged for transit and insured to the full amount (hence increased postage costs).” Click here to visit listing on eBay

Roland TB-303 with Roland TR-606

““Both are in Great Condition—Tested , work great —Both came from same owner —been in storage —Clean Condition—Battery compartments are clean —missing 1 battery cover —all buttons and knobs work on both units —THESE ARE RARE AND DO NOT MISS OUT —see all pictures and ask any questions—may show normal wear—”” Click here to visit listing on eBay

Roland TR-606 with Roland TB-303

“Up for grabs in this auction arr a pair of classic synths: Roland TB-303 & Roland TR-606. Both come with original cases and cord. Both cases and the power cord came with these synths.

These were acquired as a pair from the same local seller almost a decade ago. From what he told me, I have only been the third owner of these devices. Both are functional, except for the 303’s saving functionality which erases after a while but that could easily fixed.

Cosmetically, both devices are sound and cleaned. The previous owner placed two small stickers on the 303 which can be seen in the photos.

I have loved these two machines and have utilized them in the studio and live. I hope they can go to someone willing to care for them and use them properly. ” Click here to visit listing on eBay

Roland TB-303

” I bought this TB-303 a year ago from the original owner who had all the switches replaced by a reputable tech. Works great, all buttons and knobs function as they should, although the volume knob is a bit crackly when turned. Once you settle on a volume, it isn’t noisy.

The other obvious issue is the smiley stickers.. seems the original owner used an alcohol-based cleaner once and ended up discoloring the plastic. He covered it up with the stickers and I didn’t bother taking them off, so I have no idea what it looks like under there!

The rest of the unit is in good condition for it’s age, with all of the lettering intact, and a spotless battery compartment. I’m selling because I have another 303 with the Sequentix midi-bass mod, so it’s time for this one to find a new home. Thanks for looking!” Click here to visit listing on eBay

Roland TB-303 Project Machine

“Roland Bassline TB-303 – Comes with original Roland Case.

Came with a job lot of gear – Doesn’t have power supply so unable to test.

Comes with original Roland Carry Case & Battery Compartment Cover (not in photos)

Photos show condition of unit and form part of the description. Opened the casing to take internal photos, does not look butchered or messed about with internally.”
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Roland TB-303

” Roland TB-303 Bass Line Synthesizer with Original Case & Cover – Mint – Like NEW!

This is your chance to own a Roland TB-303 as close to brand new as possible.
If your a collector or serious acid head, this is your chance to own a legend that looks like it just came out of the box yesterday.

Unit is completely unmodified and works and looks like it is completely brand new. You won’t find a unit in better condition.

Everything functions 100% and sounds incredible

Comes with:
Original Roland Carrying Case
Decksaver Cover
New Roland/Boss PSA Power Supply

Unit will be bubble wrapped and boxed with care for shipping.” Click here to search for synths on eBay

Roland TB-303

“Roland Computer Controlled TB-303 Bass Line with Original Owner’s Manual and Carrying Case with shoulder strap. Condition Is Used.
I am the original owner and I am selling this unit AS IS, NO REFUNDS and NO RETURNS. I bought this unit shortly after they became available in music stores. I used this unit with the Roland TR-606 Drumatrix. I put it away after sequencers and sound modules became available. I recently placed batteries in it and turned it on (there was some slight static noise when I turned the unit on) and I did some basic programming and the unit worked fine. The unit has some slight abrasion on the front and back panels of the unit which I believe is from the carrying case. This unit was not checked out by a professional technician.” Click here to search for synths on eBay

Roland TB-303

“Roland TB-303 Computer Controlled Bass Line with Owner’s Manual
You are bidding on
Roland TB-303 Computer Controlled Bass Line with Owner’s Manual


Up for auction is a Roland TB-303 Computer Controlled Bass Line with Owner’s Manual.
Item is pre-owned and in good condition.
Unable to fully test without cords, but the unit lights up when powered on with batteries. ” Click here to search for synths on eBay

Roland TB-303

“Roland TB 303 – Rare Quicksilver CPU.

Condition is Used. Dispatched with Royal Mail 1st Class & courier tracked


TB303 with fitted quicksilver CPU Mega Rare to find the CPU and tough to find someone to fit these


TB303 great condition / no leaks / no wearing down of the pots – comes with manual & original CPU chipset – yes also plug Uk


Works beautifully


Kenton CV kit -also fitted


Midi fitted


Incredible silver box – ignore the re-issues and clones this is as good as 303s get.

Some say Devilfish is better but to be honest I prefer Quicksilver. Grab this before it goes to a new home never to be sold again !” Click here to search for synths on eBay

Roland TB-303

“Roland TB 303 Vintage Analog Synthesizer W/ Social Entropy Quicksilver Midi Mod and more. Mod, Proprietary Cables, & Orig. Power Supply All Included. Condition is Used. Note, there is one mildly scratchy pot that could use a cleaning or replacement but other than that she is good to go.”
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Roland TB-303

“Roland TB-303 Bassline Keyboard Synthesizer, original vintage. Condition is Used. Shipped with USPS Priority Mail.
The TB-303 is in great condition and works perfectly. The only flay is some cosmetic damage to the bottom of the unit. Only visible when you turn it over (see photos). Comes with power supply.”
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Roland TB-303

” Original Roland TB-303. Condition is used. A few scuffs here and there. Some buttons need a bit of a push to get a response but for a 30+ years old machine it’s to be expected.

Still in working condition and making those lovely squelchy bass lines. No box, manual or power lead supplied (DC 9V). ”
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Roland TR-606 and Roland TB-303

“TB-303 and TR-606, (tested working) both with original manual and a Boss ACA-120 power supply. Also including a “Roland Keyboards Vol 1″ instrument catalog that lists the TB-303 & TR-606.

TB-303 & TR-606 both are in excellent condition.
Cosmetically, they are great, with just a few marks from being stored in their original vinyl cases. (see photos – the 303 has a few more marks where the paint seems to have been marred by the vinyl case)

Both of these have seen very little use. Purchased new by my cousin. He used them lightly, and I never really used them other than a few tests. They’ve been stored in their cases on the shelf most of the last 30+ years.

all knobs, markings, labels look excellent.
Controls all work without noise. Tested them out and they work well and sound good. (I don’t really know how to use them, but I was able to coax some sweet sounds out of them anyway.) Battery contacts are like new. ”
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Roland TB-303

“This classic and outstanding synthesizer is still in great condition. The bottom is scuffed heavily, but the sides and top are clean and look close to new. The connections have all been tested and it is free of corrosion. It is in great working condition. 4 C-cell batteries will be included. Please be sure to check out my other listings of vintage pro audio equipment. ”
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Lot of 2 Roland TB-303s

“These legendary synths don’t need any introduction. If you came here, you know what they are. I have two (!) original Roland TB-303s just standing here collecting dust. They deserve to be used more than I’ve got time for.

The price I’ve put down is roughly what the have cost me, incl. some servicing and upgrades with complete 5 socket Kenton kits for both (CV, filter, gate, accent, slide). I have paid for getting all the services and the installation of the Kenton kits done professionally, but one of the synths was bought from Japan and a couple of lanes on one circuit board was cut to use the original CV/Gate outs as ins. I have got this corrected so that they have the original functionality back, but full control via the Kenton kit in addition. The other one is by me bought here in Norway, but I don’t know if it was bought here originally.

A Kenton Pro-2000 mk2 can follow the sale (midi-CV/gate converter which can also control accent, slide, filter). All leads to connect both synths to the controller will be included.

Sound wise the two synths are quite different. The one has a very nice sound, the other has way too long sustain and I have not been able to get this fixed. At the moment you can not make the classic 303 baselines with it. Hopefully someone with experience tinkering with 303s can get it fixed. All pots work, but they are a bit more loose and scratchy on the one of them. With midi control this is no problem, and I’m sure this can be fixed too. All the electrolytes have been replaced during my ownership, but it is a few years ago now. There should not be any dried out capacitors today, but things change with time of course. I have PSUs for both of them (euro plug), plus the original soft bags, one black and one silver.

This is an unique opportunity to own not just one, but two pieces of music history, even though they are not in mint condition after so many years. During my ownership I have maybe used them 10 hours in total during 10 years. I just need to realise I don’t have the time to use my studio more and they are better off with someone else. When you start playing with these and tweaking the knobs you get lost in time, the hours just fly by, but I don’t have that time. They are fantastic machines.”
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