AKG PT450 Wireless Pocket Transmitter Band 2 II New Old Stock WMS450 | Reverb
2932Z13040 - PT450 Battery Cover → Pro Audio Parts
Amazon.com: AKG Pro Audio Remote mute switch, 1 meter cable, 2.5mm plug - External switch to mute and un-mute the PT450/470/4500 and DPT700 : Musical Instruments