Siel MIDI Expander

“Up for sale is a 1984 Siel Expander analog synthesizer module, in rough but mostly working condition (details to follow). This is the module/tabletop version of the DK-600.

The machine was not working when I purchased it, so I replaced the fuse and fuse holder on the back of the unit. I also had to add a wire on CPU board to get the envelopes to fire, as one of the traces had been corroded by a prior battery leak. I also replaced the old RAM battery with 3x AA lithium batteries I mounted to the bottom of the unit on the inside.

It has played well over the past four years after I was able to get it working, but with the amount of old corrosion I found and had to clean on the CPU board, I cannot guarantee how long it will continue to work long-term and I will therefore list it as “for repair”. In addition, I never used the pedal, tape, or MIDI THRU ports, so I cannot attest to the functionality of those items. Please buy at your own risk!” Click here to visit listing on eBay

Siel OR 400

“An amazing vintage synth used by the greats such as the cure, portishead and massive attack. The synth is in good shape, the volume fader knob is missing and there is a bit of rust on the back. ” Click here to visit listing on eBay

Siel DK-80

“Collection only please due to weight, and I haven’t got a box that is be able to fit it in.

Never gigged with only home studio use.

Please note this is working fully as a midi controller, but currently has no sound, it looks like it could just need a new battery after some Internet searches, but not that technical so don’t know.

Siel DK-80 Vintage Synthesiser 1985 Very Rare!. Low serial number of 3780, so was one of the first to be produced of this synth.

It’s 12 note polyphonic, velocity sensitive, the modulation wheel doubles as the pitch bend with a button press, you can reprogram some of the presets, I can’t remember how many possibly 10. If you know the Ex80 the expander version it’s basically 2 of them bolted together with a lovely feeling keyboard.

Works fully as a midi controller, with hardly any marks, especially since I bought it in 1985! That was the year it was made as well.

So there’s a few scratches underneath and a few of the screws could do with tightening and glueing, main problem is it has no sounds, apparently that could just be the battery, as I’ve had it done before and it worked, but I believe it’s soldered in. Quick fix if it’s just that and can do it.

Broken key as in photo – looked at replacing it, as a key on here is about a fiver, but as I’ve broken my shoulder just haven’t got the strength to do it, as its a heavy keyboard.

Oh the cartridge slot has had a spot of superglue on it to keep it closed as the spring needs repositioning or replacing, not a problem really if you haven’t got a cartridge.

Comes with case, black and red, new USB cable and PSU as apparently not many have them anymore.” Click here to visit listing on eBay

Lot of 2 Siel DK80 Synthesizers

“Dispatched with Other 48h Courier.

2 Siel DK80 synthesiser keyboards.

Both untested as I cannot find the power supplies so listed as spares/repairs.

One of these worked for sure but its been a few years since I tried.

The other was bought cheap without PSU and was untested as the power cable is cut off.” Click here to visit listing on eBay

Siel DK70

“Rare 8 voice DCO Italian analogue polysynth

Serviced in the last few years by Synthrestore in Bedford

Fully working in every way. A couple of scuffs & damage to the underside of one key.

Brand new 12v DC Power supply included” Click here to visit listing on eBay

Siel DK-80

“SIEL DK 80 Synthesizer 80’S Vintage Condition is “Used”. Shipped with USPS Parcel Select Ground.

we tested with head phone working . no another further tested IT WILL COME

POWER SUPLY

PEDAL

AND CARTRIDGE” Click here to visit listing on eBay

Siel DK-80

“SIEL DK 80 Synthesizer 80’S Vintage Condition is “Used”. Shipped with USPS Parcel Select Ground.

we tested with head phone working . no another further tested IT WILL COME

POWER SUPLY

PEDAL

AND CARTRIDGE” Click here to visit listing on eBay

Siel DK 700 Project Machine

“SIEL DK 700 SYNTHESIZER – MIDI WORKS – Keyboard Not Operating.

Power cord included, does have a substance melted to it, power cord function unaffected.

The midi works, which is the desirable part of this rare 80s keyboard. the keys themselves are not functioning. One key has damage underneath, seen in one of the pictures.

Perfect for the person who can repair the keyboard or good for use just as a midi.” Click here to search for synths on eBay

Siel DK 80

“Used Siel DK 80 FM Synthesizer. From 1985. Very similar to the DX-7 Yamaha. I used this for a few years and it always worked well. Pulled it out of storage yesterday (a temperature controlled bedroom in my parents house) to test before selling and it doesn’t seem to work anymore, however. The unit makes somewhat loud (relative to the sound of the synth sound) buzzing sound, or the synth level seems quite low. Also, the synth doesn’t seem to want to change programs but honestly maybe that is simply because I can’t quite remember what to do to make that happen!” Click here to search for synths on eBay

Siel Expander 80

” Siel EX 80 Synthesizer with PS 80 Power Supply and Case – Great Condition.

So, what’s this?! The Italian company Siel released their DK80 synth keyboard in 1985, which was a 12 voice analogue bi-timbric (2 sounds at once) synth. The Expander 80 was also released at the same time (costing only £399, the cheapest instrument in it’s class by a long way) being essentially (but not just) half a DK80 – 8 voice polyphonic and one sound at a time. Originally the Expander 80 was not supplied with a power supply, as the DK80 one was designed to drive the pair (Siel expected the DK80 owner to be the typical owner of the Expander 80). The Expander 80 still retained the 300 event two track sequencer, although both tracks have to play the same sound. Similarities to the Korg EX800 cannot be ignored, especially as the voice architecture and front panel layout do have similarities. The Korg EX800 was released a year earlier in 1984, so the Siel Expander 80 definitely followed it. Internally, they share no common electronics – so it’s no surprise they sound different.

Of course, people realised pretty quickly that if you didn’t need yet another set of keys, the EX 80 was actually probably a much more useful and versatile instrument, as part of a wider rig.

Over time, this has become a) rare as hens teeth and b) quite sought after as a seriously quirky (and with some tweaking, surprisingly aggressive) monosynth, with a real analogue sound, digital control, and a lot of character. The other major issue with these is the ludicrous power supply which is very hard to find indeed, and which have started selling for silly money on their own (and which can power both a DK 80 and EX 80 at the same time, if needed – two outputs). Luckily, this listing includes an original power supply, so no trouble in store with that.

I’m also selling this with the case it’s currently living in – it fits it well (minus power supply, which could handily double as a boat anchor) – it’s a good solid well-padded case, so that’s a nice bonus.” Click here to search for synths on eBay

Siel Orchestra

” Good condition for age (see photos). A few scratches and chips to woodwork, but nothing major. All keys and controls work, except for the spring on the Brass Mute key (but Muting still works if switch held)

The Orchestra is a 4-part orchestral synthesizer from the classic Italian synth company, Siel (later bought by ARP and relabelled the Quartet). The Orchestra has 4 presets: Brass, Strings, Organ and Piano.

The 4 tone color families can be played individually or two can be simultaneously played. They are also individually tweakable. Selected presets will light up each bank’s LEDs to show you which sliders and buttons can be used to modify the sounds.

Its a classic instrument, so no Midi or external control, but however its analogue sounds are rich and warm, and it is, after all, a classic analog string synth.

The Brass section creates Trumpet and Trombone sounds with independent attack and sustain controls.

The String section creates Cello and Violin sounds with independent attack and sustain controls.

The Organ section is 2-voice and has a Celeste sound available as well.

The Piano section offers two types, traditional or Honky Tonk. The ARP Quartet, which is completely identical to the SielOrchestra has been used by 808 State and Massive Attack for some of its great string sounds. “ Click here to search for synths on eBay

Siel DK-600

“Good condition, display board also may have some technical issues/need parts, keyboards work well, audio output has technical issues may need replacement parts, unit has small imperfections from normal use, see photos for details, case has small exterior scuffs/marks” Click here to search for synths on eBay