1) It sounds better than any softsynth or VST I own or have tried, including stuff like Diva. It is not close. There is a harmonic richness and chime that quality analogs have (like the new OB-6). You can feel the beat frequencies in the harmonics of chords and things like on an acoustic piano. I don't know what to chalk this up to, but it is a "real" instrument in this way. VST's just don't do that - they sound great, but there isn't that visceral harmonic interplay. If you also play acoustic instruments like piano, guitar, drums, etc, this is a big deal.
2) There's enough "stuff" to do almost anything you can imagine. Crazy signal routing (like a modular), really out there modulation possibilities, very subtle control of every parameter, lots of control over each phase of the envelopes, loop EG, arps, sequencer, rotors - it is just endless. John writes in the manual that he hopes it has many hours of exploration in it. Safely accomplished. It is years and years worth of exploration.
3) its like having all the major synthesizers (except a DX-7) in one unit and getting to mix and match. Waldorf, VS, Moog.... it's crazy flexible. Vector synthesis while scanning through four Waldorf wavetables is easy - do you control it with a joystick, a loop envelope, a sequencer? Manually, by time, or by clock? Put it in a rotor? dump all that in a mixer and blend with the four wavetables? Processes each wavetable with its own filter and envelope? There's just no end.
4) the joystick and mod-wheel are wonderful. they are precision instruments and can be positioned EXACTLY. Subtle control is quite possible.
5) It cures a lot of gear lust. Most any subtractive synth on the market has a fraction of the capabilities of the Solaris. There's literally no reason to buy them, unless there's some standout feature worth the price of admission.... the continuously variable filter in the new OB-6 is calling my name..... very sweet. Think about it - 4 OSC, 6 LFO, 6 ENV, 4 Filters (each capable of many types), 4 VCAs, 4 mixers, 2 rotors, Loop EG, vector synthesis, wavetable synthesis, AM synth, FM, lag processor, envelope generator, arps, 4 sequencers, long ribbon.... You can find 2 OSC + Sub OSC designs, but four full OSC? with >8 note poly? It is like a polyphonic modular.
6) I put it in Omni mode and play it from a Roli Seaboard with full Poly-AT control. This is the kind of expression that synths were made for. Just gorgeous.
7) even from the keyboard, there is so much modulation potential that you can make VERY playable, and expressive sounds that you control with your hands. It is a great "players" instrument in that way. You can go deep on making it responsive and subtle, which is very musical. The keyboard is a very high-quality synth action. I don't know if it works for the DJ crowd, or the EDM crew, but for playing a keyboard instrument it is very nice, and the feel can be customized for each patch if you put the time in.
![Cool 8)](./images/smilies/icon_cool.gif)
Solaris #142 has a very happy owner.