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Volume controls & transformers

PA TR100
TR100 - Line transformer 100/70V -100W Seconday impedance 16-8-4...
PA TR24
TR24 - Line transformer 100V-24/12/3/1,5W ..
PA TR40
TR40 - Line transformer 100v-40/20/10/5/2,5 W. ..
PA TR50ST
Stereo volume attenuator for 4/8/16Ω speakers ..
PA TRV120B
Volume controller ..
PA TRV12A
Volume attenuator ..
PA TRV30B
Volume controller ..
PA TRV50A
Volume attenuator ..
PA TRV60B
Volume controller ..
PA TRV6B
Volume controller  ..
PA ZVC06
It is a rack service panel and a multiple volume regulator up to 6 lines at 100V and100W maximal pow..