Semiconductors (the count is only for transistors) Semiconductors present.
Principle Audio-Amplification
Wave bands - without
Power type and voltage Alternating Current supply (AC) / 220 Volt
Loudspeaker - This model requires external speaker(s).
from Radiomuseum.org Model: SQ22 LBH 0251/10
Material Metal case
Shape Tablemodel, with any shape - general.
Notes Mixer and amplifier, 4 mic input & one output, clamp outputs for 50, 70 or 100 V, 4 & 8 ohms.