Brilliant early stereo spring reverb, with massively long springs which were then pretty unique and still probably are. Bandive / Turnkey had the simple idea of using off-the shelf building materials for the case. (Sherman's original Filterbank and Argent's HumDrum had similar ideas.)
The length of the springs gives a reverb like no other, sometimes akin to a plate reverb, and with no electronics inside apart from the driver/transducers, the sound is pure and lively. If you want to prevent typical spring 'boings', just put a limiter in line before it. The same if you want to EQ it.
This originally came with an annoying DIN socket external PSU, which has been converted to a standard barrel - generic UK PSU included. The in and outs are on stereo jacks, so two stereo-to-twin-mono 1/4 in leads are included.
Packing 12GBP.