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ART SLA-4 4-channel Power Amplifier , $469.99 - Add to Cart Skip to Product Information

ART SLA-4 4-channel Power Amplifier

4-channel Power Amplifier, 100W RMS/ch at 8 ohms, with Flexible I/O, SmartFan Silent Cooling, Wide frequency response
ART SLA-4 4-channel Power Amplifier
ART SLA-4 4-channel Power Amplifier

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Only 5 left in stock! More on the way.
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ART SLA-4 4-channel Power Amplifier
In Stock!

Only 5 left in stock! More on the way.

A Professional and Flexible 4-channel Power Amplifier!

This article was Written By

Our Product Research Team

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The ART SLA-4 is a 400W studio linear power amplifier that delivers the clean power necessary for any professional audio or commercial sound environment. A 4-channel, single rack-space amplifier, the ART SLA-4 can easily be switched between multi-channel, stereo, and bridged mono modes. Sweetwater users use the separate mode switches to bridge channels one and two, three and four, or both channel pairs for the ultimate in flexibility. A SmartFan cooling system, high-quality decoupling system, and included tamper-proof cover round out the professional ART SLA-4.

Designed for long-term reliability

The SLA-4's output is fully protected from short circuits for the ultimate in reliability. 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 4 ohms (bridged mode), making it ideal for virtually any installation application or complex system configuration.

Advanced SmartFan cooling system

The ART 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.

Easily ties into any system

1/4-inch TRS and Euroblock balanced inputs as well as multi-way output binding posts ensure the ART SLA-4 can be quickly and easily tied in to any system without modification.

ART SLA-4 Features:

  • 4-channel, 400W power amplifier with extremely low noise and a discrete linear design
  • 4 x 100W/ch @ 8 ohms, 140W/ch @ 4 ohms
  • 2 x 200W/ch @ 16 ohms, 280W/ch @ 8 ohms (bridged)
  • 2 x 100W/ch @ 8 ohms & 1 x 280W @ 8 ohms (bridged)
  • Toroidal transformer
  • 10Hz–40kHz frequency response
  • 1/4-in. TRS, and Euroblock balanced inputs
  • Recessed "pop out" detented gain knobs
  • Tamper-proof faceplate included
  • Multi-way binding post outputs
  • Low-profile 1U rackmountable design
  • SmartFan silent cooling system

Warranty Info

Sweetwater's FREE 2-Year Total Confidence Coverage Warranty

Extra peace of mind at no extra cost.

  • Save money with FREE parts and labor
  • Get back to making music with the industry's fastest turnaround time
  • Fix it the first time with our award-winning, factory-certified Service Department
Learn More about Total Confidence Coverage

Offer applies only to single-receipt qualifying purchases. Select manufacturers may require that only the manufacturer’s products qualify towards the minimum purchase amount needed to be eligible for promotional financing. Otherwise, an invoice that meets the minimum purchase amount and contains at least one qualifying manufacturer product is eligible for promotional financing. No interest will be charged on promo purchase balance, and equal monthly payments are required on promo purchase until it is paid in full. The payments equal the amount financed divided by the number of months in the promo period, rounded up to the next whole dollar. These payments may be higher than the payments that would be required if this purchase was a non-promo purchase. During the last month(s) of the promo period the required monthly payment may be reduced due to the prior months’ rounding. Regular account terms apply to non-promo purchases. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

Offer applies only to single-receipt qualifying purchases. No interest will be charged on the promo balance if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo balance from the purchase date. The required minimum monthly payments may or may not pay off the promo balance before the end of the promo period, depending on purchase amount, promo length and payment allocation. Regular account terms apply to non-promo purchases and, after promo period ends, to the promo balance. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

The estimated required monthly payment shown which excludes taxes and delivery equals the amount financed divided by the number of months in the promo period, rounded up to the next cent. During the last month(s) of the promo period the required monthly payment may be reduced due to this rounding. These payments apply only with the financing offer shown. If you make these payments by the due date each month, you should pay off this amount financed within the promo period, if it is the only balance you are paying off. If you have other balances on your account, this payment will be added to any other minimum monthly payments.

Applies only to select items from this manufacturer. Ask your Sweetwater Sales Engineer for more details.