- Line Input 220mV/1V switchable for connecting a mixer or another amplifier.
- 100V input for connecting another amplifier output.
- Resettable circuit breaker for protection against overload and short circuit.
- Instant transfer to DC power if AC power fails.
- Box Speaker/Driver Unit selector switch. Bass boost defeated at Driver Unit position for safer operation of driver units.
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PRO-TEQ SPA-12000 is a Super power single channel PA booster amplifier, specially designed for big installations where large number of speakers are required.