442BU Cossor balloon shape black plate full getter audio rectifiers UU5

Description

Nice design for these directly heated rectifiers made at Alfred Cossor’s works way back in the 1930s.

We are delighted to offer a set of two or four of these valves.

Black plate allows better heat dissipation and the Cossor 442BU can be considered a very good partner for all your audio needs!

All four Cossor 442BU have been fully tested and are in working order.