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  • 6 Mic & 2 Aux Inputs.
  • Preamplifier and Line Output for connecting to a Booster Amplifier and for recording the programme.
  • Line Input for connecting the output from any external mixer or permitting SSA-250 to be used as a Booster Power Amplifier.
  • Resettable circuit breaker for protection against overload and short circuit.
  • Instant transfer to DC power (Car Battery) if AC power fails.
  • Box Speaker/Driver Unit selector switch. Bass boost defeated at Driver Unit position for safer operation of driver units.

More Information

Features/General Description of Product:

  • Designed for use in a wide variety of PA applications.
  • SSA-250®M is a 250 Watts Mixer Amplifier with Four Unbalanced Independent Mic inputs and Two Unbalanced Mic Inputs alternate to two Auxiliary inputs.
  • SSA-250®M has a Preamp output for recording the program, a Line output for connecting to a Booster Amplifier and a Line input for connecting to an external PA Audio Mixer.
  • Box Speaker/ Driver Unit selector switch has been provided for protecting the Driver Unit's diaphragm from unwanted low frequencies. Since Box speakers can reproduce the full spectrum of audio frequencies but Driver Units cannot reproduce very low frequencies, the switch should be positioned to the Driver Unit side when Driver Units, Horns and Column speakers are connected.
  • Circuit Protector Device has been provided which safeguards the amplifier against overload and short circuit.
  • Provision for automatic changeover from AC to Battery Operation ensuring continuity of program has been provided.
  • Protection provided against the reverse polarity of Battery connections.
  • Ease of operation, combined with service accessibility has been optimized in the design.

Technical Specification


Power Output 300W Max., 250W RMS at 10% THD, 220W RMS at 5% THD, 200W RMS at 2% THD
Output Regulation ≤ 2 dB, no load to full load at 1kHz
Input Channels 6 × Mic 0.65mV/4.7kΩ, 2 × Aux 100mV/470 kΩ, 1 × Line 1V/50kΩ
Frequency Response 50-15,000Hz ±3dB
Signal to Noise Ratio 60dB
Tone Controls Bass: ±10dB at 100Hz, Treble: ±10dB at 10kHz
Outputs Preamp 200mV/600Ω, Line 1V/1kΩ
Speaker Outputs 4Ω, 8Ω, 70V & 100V
Power Supply AC: 220-240V 50/60Hz DC: 24V (2×12V Car Battery
Power Consumption AC: 460VA DC: 6A
Dimensions W450 × H160 × D340 mm
Weight 16.0kg


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