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Product Overview

The BS-181 is a single channel Power Supply housed in a steel case. It has the capacity to power up to fifteen BS15 beltpacks to full volume.

The BS 181 enables cost-effective system powering or expansion when only one channel is needed or requires expansion.

The ASL Basic Series provides a cost-effective solution in more limited applications that require full duplex, party line communication. All interconnections are made with standard, balanced microphone cable with XLR-3 connectors. 

Installation requires no expert knowledge, and clear layout of controls assures trouble-free operation with a very short learning curve. A current-driven interconnect loop ensures that operator listening levels do not change as stations are added to or removed from the network.




  • Switch Mode Power Supplies
  • Mains voltage range: 100 - 240 V AC, 50/60 Hz
  • Output voltage: +30 V DC (+/- 5%)
  • Max output power: 45 W

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*Prices are in AUD, include GST and are subject to change. Please call National Audio for pricing and availability on the BS181.