Siel's final synthesizer before the company merged with Roland, the DK-700 arrived in 1986 as a bold statement that got lost in the shuffle—fewer than a few hundred units made it into the world, and this Italian powerhouse never quite received the recognition it deserved.
The DK-700 is a six-voice hybrid synthesizer built on a foundation of analog circuitry with digitally controlled components, giving it the warmth of analog synthesis without the tuning headaches. Each voice features two digitally controlled oscillators offering sawtooth, pulse, and combined waveforms, feeding into a four-pole resonant analog filter. The real magic lives in its modulation architecture: three parallel LFOs with dedicated ADSR envelopes on each one, plus a sample-and-hold modulator, all capable of modulating pitch, pulse width, and filter cutoff simultaneously. The 61-key velocity-sensitive keyboard connects to advanced MIDI functionality, making it equally at home as a master controller or standalone instrument. You get 73 user-editable patches stored internally, and the control layout is straightforward enough to tweak sounds without diving into a manual.
What sets the DK-700 apart from its predecessor, the Opera-6, is how those parallel LFOs with independent envelopes unlock pad textures and evolving timbres that sound far more sophisticated than the spec sheet suggests. The pseudo-chorus effect created by modulating pulse width across voices produces lush, shimmering textures that justify the machine's rarity among collectors and sound designers who've discovered it. The minimalist front panel design hides genuine synthesis depth, though some players note that the straightforward control layout means you're working with what's programmed rather than tweaking extensively during performance.
