Crazy little box. Warning: Not for the fainthearted!
First of all - make sure you have some sort of volume limiter after it (limiter, compressor etc), since the feedback screams can build up fast.
Don't plug it straight to a PA system or you will cause mayhem if feedback is cranked to a certain value.
Sound quality: since it's an analog circuitry (for the signal path, effects are digital), you will have noise. Mainly high frequency noise, and it's quite audible. You can reduce it with filter cutoff, but then you will loose top end fidelity of course.
As for functionality, it has 8 effect modes:
- Wave Glide I
- Wave Glide II
- Delay I
- Delay II
- Reverb I
- Reverb II
Also, if you dial in the volume to a specific value (near clipping), the device enters into a 'secret' mode where it starts to bounce between effects taking characteristics from multiple effects and combining them. Interesting results.
Combined with feedback and envelope follower you can achieve cool grooves when running beats through.