Art SLA-4, 4x140W Power Amplifier

Availability: Out of Stock


  • Extremely Low Noise, Discrete Linear Design.
  • 4 x 100 watts/Ch @ 8 ohms, 140 watts/Ch @ 4 ohms.
  • 2 x 200 watts/Ch @ 16 ohms, 280 watts/Ch @ 8 ohms (bridged).
  • 2 x 100 watts/Ch @ 8 ohms & 1 x 280 watts @ 8 ohms (bridged).
  • Toroidal Transformer.
  • 10 Hz to 40 kHz Frequency Response.
  • 1/4-inch TRS, and Euroblock Balanced Inputs.
  • Recessed “Pop Out” Detented Gain Knobs.
  • Tamper-Proof Faceplate Included.
  • Multi-way Binding Post Outputs.
  • Low Profile 1U Rack-Mountable Design.
  • SmartFan Silent Cooling System.

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 rack-space 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. 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. An ultrasonic network decouples RF from the output and helps keep the amplifier stable with reactive loads. 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. 1/4-inch TRS and Euroblock balanced inputs as well as multi-way output binding posts are ensure the SLA4 can be quickly and easily tied in to any system without modification. Simple to install tamper proof cover is included.

Product Specification:

Bridged Output Power, 16 Ohms: 2 x 200W/Channel RMS

Bridged Output Power, 8 Ohms: 2 x 280W/Channel RMS

CMRR: > 60dB (typical @1kHz)

Damping Factor: > 100

Frequency Response: 10Hz to 40kHz, +/- 0.5dB

Total Harmonic Distortion: <0.05% (typical)

Hum and Noise: > 100dB below clipping

Input Impedance: 44k Ω (balanced) / 22k Ω (unbalanced)

Input Sensitivity: 1V for full power output into 8 Ω

Input/Output Connections: 1/4-inch TRS/Euroblock (Input) / Multi-Way Binding

Minimum Load Impedance, Mono: 4 Ω (Bridged)

Minimum Load Impedance, Stereo: 2 Ω (Stereo)

Slew Rate: > 20V/uS

Stereo Output Power, 4 ohms: 4 x 140 W/Channel RMS

Stereo Output Power, 8 ohms: 4 x 100W /Channel RMS

Transformer Type: Toroidal

Power Requirements: 120VAC 60Hz 1000 W (max)

Dimensions: 1.75″ x 19″ x 13.5″ / 44.5mm x 483mm x 190.5mm

Weight: 19.8lbs (9.0kg)

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Manufacturer Part Number SLA4
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