Here is an example of a Hiwatt PA head, DR203 Model "PA", 4 x KT88.
Pictures courtesy of Peter M.
Here is an example of a Hiwatt PA head, DR203 Model "PA", 6 x EL34.
Pictures courtesy of John L.
The 200-watt DR201 came in two variations, one (like this example) used six
EL34 output tubes, while the other used four KT88s. Loud.
Pictures courtesy of Steve (aka klyniss)
Another clean example of the six-EL34 output tube version.
Pictures courtesy of Jeff S.
Hylight STA 200
The 200-watt STA 200 "slave" amp was basically ar DR 201 without the front
part of the preamp and tone controls. It was used most often in P.A.
applications, but could also be used slaved from a regular DR head.
This is a four KT88 model.