Westone Thunder I

There have been at least three different versions of this model -

Version 1 (1981)

1981 Thunder IThanks to Jon (Tele) for pointing this one out to me.

Specs (From the 1981 catalogue) -

 

Version 2 (1982-3)

As shown in the 1982/3 catalogue

Version 3 (1983 onwards)

As shown in the 1983 catalogue

Thunder I frontThunder I back