ART SLA4 Studio Linear Amplifier
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Designed for versatility, this ART 4-channel linear amp is a 1-rack-space unit that can toggle between multi-channel, stereo or various bridged modes.
Overview
Offering superb sound quality, the ART SLA4 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 SLA4 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. This 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 SLA4'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. The SLA4 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 SLA4 features SmartFan(TM), 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. A simple to install tamper proof cover is included.
The SLA4 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. This 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 SLA4'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. The SLA4 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 SLA4 features SmartFan(TM), 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. A simple to install tamper proof cover is included.
Specs
- Bridged Output Power, 16 ohms: 2 x 200Watts/Channel RMS
- Bridged Output Power, 8 ohms: 2 x 280Watts/Channel RMS
- CMRR: Greater Than 60dB (typical @1kHz)
- Damping Factor: Greater Than 100
- Dimensions: 1.75 x 19 x 13.5 in./ 44.5 x 483 x 190.5 mm
- 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 8 ohms
- Input/Output Connections: 1/4-inch 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 140Watts/Channel RMS
- Stereo Output Power, 8 ohms: 4 x 100Watts/Channel RMS
- Total Harmonic Distortion: Less Than 0.05% (typical)
- Transformer Type: Toroidal
- Weight: 19.8 lbs / 9.0 kg
Output at 8 ohms stereo: 280 watts per channel
- Bridged Output Power, 8 ohms: 2 x 280Watts/Channel RMS
- CMRR: Greater Than 60dB (typical @1kHz)
- Damping Factor: Greater Than 100
- Dimensions: 1.75 x 19 x 13.5 in./ 44.5 x 483 x 190.5 mm
- 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 8 ohms
- Input/Output Connections: 1/4-inch 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 140Watts/Channel RMS
- Stereo Output Power, 8 ohms: 4 x 100Watts/Channel RMS
- Total Harmonic Distortion: Less Than 0.05% (typical)
- Transformer Type: Toroidal
- Weight: 19.8 lbs / 9.0 kg
Output at 8 ohms stereo: 280 watts per channel
Dimensions and Weight in Packaging
Base Item
- Shipping Weight: 24.5 lbs
- Shipping Dimensions: 23 x 18 x 6 in
- Manufacturer Part Number (MPN): SLA4
Documents and Manuals
For support or warranty questions, please contact the manufacturer:
Phone: 716-297-2920
Web: https://www.artproaudio.com/support/
Phone: 716-297-2920
Web: https://www.artproaudio.com/support/
Reviews
Reviewers gave this product an overall rating of 5 out of 5 stars.
(4 ratings)
Submitted March 13, 2026 by a customer from aol.com
"ARTSLA4 power ramp"
Verified Customer
zZounds has verified that this reviewer made a purchase from us.
I decided to pull a trigger and get one of these amplifiers. I have ART microphone. It’s an old condenser large diaphragm condenser and a Mike preamp that’s tubed. Let’s say that the quality is very very good. Yeah you have the latest that you know bargain basement or energy level. I know a lot about amplifiers I’ve been in a lot of them worked on a lot of them and I never seen inside this amp I’ve seen pictures of it online huge trial transformer, huge power supply and sounds really really good and I would say it’s one of the best I’ve got for 1000 bucks very good. I might buy another a great surround sound however amplifiers if you have a surroundsound preamp.
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