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New Mini Amplifier from SoundTube

The MA501t is a low-voltage mono power amplifier engineered for use in distributed sound applications. Designed for use with SoundTube and other high-fidelity speakers, the MA501t provides 50 watts of output power at 25V, 70V or 100V. A 12V trigger is provided for auto-on/off functions.

Recessed gain control is available via the front panel; this deters unauthorized tampering with levels or other settings.

UL 60065 Listed; CCC, CE, RoHS Approved.

Its small size allows you to mount it on poles, in racks or on a chassis, while its 50 watt output gives you the power you need for paging and other applications. 


  • Fast, easy Euroblock connections
  • 34 dB gain
  • 25V, 70V and 100V settings
  • Selectable high-pass filter
  • Auto-sensing or trigger activation
  • Measures 1.2″ x 3.9″ x 8.0″