New gear - FAT Procoder, Kawai R-100, Seiko DS-310

Another equipment splurge has ended up with me buying a FAT Procoder, Kawai R-100 drum machine and Seiko DS-310 digital programmer. I've wanted a hardware vocoder for some time, as I haven't been impressed by software ones. The Procoder is just about the cheapest it's possible to find, and this is reflected in the build quality, which is atrocious. The manual is awful too, so I had a lot of trouble setting it up, not helped by a lack of suitable microphones. However, it works well with line inputs, and I got some great Klaus Schulze-style rhythmic chords out of it.
The Kawai R-100 is a sheer indulgence, a gritty sampled drum machine with some interesting tuning features, but not something I'm likely to use much.

The Seiko DS-310 is something I never thought I'd own - it's the harmonic synthesis programmer add-on for the DS-250 keyboard. To my astonishment it works, and creates some fabulous sounds (but unfortunately lacks a filter envelope function). Bizarrely, though no-one seems to have posted a scan of its manual, I got one on eBay - no instrument for sale, just the manual. What's that all about then...?