Siel DK600

Siel DK600 Image


The DK600 is Siel's unique Italian take on the mid-eighties programmable polysynth with MIDI implementation (badged as the Opera-6 in the UK). Just like the Juno-106 and Poly-61 of the time, the Siel was a 6 voice synthesizer with straight forward programming, simple effects and digitally controlled analog oscillators (DCO's). However, the Siel, having dual oscillators per voice sounds thicker than the Juno or Matrix because it's got 12 oscillators! And because they're DCO's, you know they'll always remain stable and in-tune even though they are analog in nature.

The DK600 has many other nice features such as complete MIDI implementation. There are 3 LFO's for extreme modulation. Both the filter and amplifier have standard ADSR envelope sections. And like similar synths, all the sliders and buttons are intuitively placed on the front panel for hands-on real-time programming.

Siel Expander Image

EK-600 Expander

The EX600 Expander module was also released (pictured above), featuring the same great internal synth engine as the DK600. However, the Expander is not programmable except from a DK600, an external MIDI sequencer or editor such as Unisyn. The Expander was intended to be programmed by transferring patches from the keyboard version. It's not rack-mountable either so it's usually best to go for the keyboard version. After all, the keyboard features the great layout of controls, velocity sensitivity and 61 notes (5 octaves)!

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17 Visitor comments
Robert Gerrard
July 12, 2009 @ 8:05 am
I used to sell these intersting synths. I remember a superb demo of all the Siel keyboards (at the Music Trade Fair in London) based around all the music from Flashdance!

The oscillators are capable of producing some really gorgeous twinkly sounds, as well as very fat brassy or bass patches. Nice keyboard touch too. I miss playing mine (which I borrowed from stock and sold off as ex-demo!).
Mark Unsworth
October 1, 2008 @ 6:00 am
I brought my Siel DK600 way back in 1986 and it,s still going strong.
The DK600 is beautifully styled and can generate some very complex analogue sounds, it sounds even richer when the used with an effects unit. A truly underrated synth.
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  • Check Price
  • The link above will take you to an eBay search for this synth to see active listings. If you don't find it there, try looking in our forum marketplace or post a wanted classified.
  • Specifications
  • Polyphony - 6 voices
  • Oscillators - 2 DCO's per voice for 12 total
  • LFO - 3 LFO's
  • Filter - SSM analog with resonance and ADSR
  • VCA - ADSR
  • Keyboard - 61 notes with velocity
  • Memory - 95 programs
  • Control - MIDI
  • Date Produced - 1984-85

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