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ART - SLA-4 (4-Ch Rackmount Power Amp)

Offering superb sound quality, the ART SLA-4 studio linear power amplifier delivers the clean power you need for any professional audio application including project or professional studio environments or commercial sound installations.

The SLA-4 is a true four-channel amplifier in a single-rackspace format that can be switched easily from Multi-channel, Stereo and Bridged Mono Modes. Separate mode switches allow you to bridge channels 1 and 2, or channels 3 and 4, or both channel pairs.

The SLA-4 maximizes flexibility by allowing the amp to be configured for best utilization in 2, 3, or 4 channel applications. Designed for long-term reliability in any audio application, the SLA-4’s output is fully protected from short circuits, while an ultrasonic network decouples RF from the output and helps keep the amplifier stable with reactive loads.

The SLA-4 is stable into loads as low as 2 ohms (stereo mode) or 4 ohms (bridged mode), making it ideal for virtually any installation application or complex system configuration. The SLA-4 features SmartFan, an advanced, thermal dependent fan assisted convection cooled system.

The SmartFan system is dependent upon the internal ambient temperature of the unit, and runs at high or low levels depending on the amplifier’s cooling needs. ¼: TRS and Euroblock balanced inputs as well as multi-way output binding posts ensure the SLA4 can be quickly and easily tied in to any system without modification. A simple-to-install tamper-proof cover is included.


  • 2 x 200 watts/Ch @ 16 ohms, 280 watts/Ch @ 8 ohms (bridged)
  • 4 x 100 watts/Ch @ 8 ohms, 140 watts/Ch @ 4 ohms
  • 2 x 100 watts/Ch @ 8 ohms & 1 x 280 watts @ 8 ohms (bridged)
  • 10 Hz to 40 kHz frequency response
  • 1/4” TRS and Euroblock balanced inputs


  • Bridged Output Power, 16 ohms: 2 x 200W/ch RMS
  • Bridged Output Power, 8 ohms: 2 x 280W/ch RMS
  • CMPR: Greater than 60 dB (typical @ 1kHz)
  • Damping Factor: Greater than 100
  • Dimensions: 1.75" x 19" x 13.5"
  • Frequency Response: 10Hz to 40kHz, +/- 0.5dB
  • Hum and Noise: Greater Than 100dB below clipping
  • Input Impedance: 44k ohms (balanced) / 22k ohms(unbalanced)
  • Input Sensitivity: 1V for full power output into 8ohms
  • Input/Output Connections: 1/4" TRS/Euroblock(Input) / Multi-Way Binding Post (Output)
  • Minimum Load Impedance, Mono: 4 ohms (Bridged)
  • Minimum Load Impedance, Stereo: 2 ohms (Stereo)
  • Power Requirements: 120VAC 60Hz 1000 watts (max)
  • Slew Rate: Greater Than 20V/uS
  • Stereo Output Power, 4 ohms: 4 x 140W/ch RMS
  • Stereo Output Power, 8 ohms: 4 x 100W/ch RMS
  • Total Harmonic Distortion: Less Than 0.05% (typical)
  • Transformer Type: Toroidal
  • Weight: 19.8 lbs.

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