Very high quality stereo delay unit that is unlike any other that I have tried or seen. 
Very fun to play with using ANY Audio source, from Vocals, instruments, drums, field recordings, live or recorded material. 
I do find there are some issues and missed opportunities that hav finally made me decide to return the product. 
I think there will be a Zen Delay 2 for sure in the not so distant future which hopefully improve on these points, and some may even be fixed in updates. 
The issues for me are: 
- The digital delay high pitched noise that surely can be called a bug. 
- The mix issue that prevents parallell filtering without noticable doubleing because it's post dsp conversion even when the delay is turned off. 
- No way to modulate parameters with CV or other input. 
- Would be great to have even more delay modes like reverse and more!