the equivalent amp from Nordmende to the Grundig NF1 or NF10 amps which are
much more common. The Nordmende unit was used in bigger stereo consoles,
also combined with an early TV.
HERE YOU CAN SEE THE COOL ULTRASONIC REMOTE CONTROL!
was designed for 4 and 8 Ohms and delivers (using new tubes) 7 watts.
The output transformer provides an 8 Ohms
output (yellow), which is unfortunately cut very close to the transformer,
but can be used if connected carefully.
As the Grundigs it uses 2 ELL80 and 2 ECC83,
but does not have printed circuit boards and has bigger (and maybe better) output transformers.