HA-50
(1980 - 1982)

Found in an Audio Accessory japanese magazine, summer 1981 issue.
Just as rare as the contemporary ESPRIT look-a-like HA-T1, the HA-50 MC cartridge head amp is obviously a simplified HA-55, therefore present in this pre-Esprit section. The price was a smallish 25,000¥ and specs found in a 1980 japanese Sony turntable catalog say this:

noise floor: 152dB
dimensions: 12 x 8 x 28cm
weight: 1,8kg.

Anybody ?