This is the "Z Pre2", one of the half-width mini components that have been newly redisigned and released. The Z Pre2 is a 2-channel pre-amplifier designed to go with the rest of the set, consisting of a 2-channel amplifier, radio tuner, phono amp, and speaker selector. The Zpre2 is shown on the bottom of the picture above.
The website now has the owner's guide and brochure for the Zpre2 listed in additon to the RS-232 codes which were previously posted.
It looks like a good product! I'm still considering getting a Z-series stack for an office set.
