Other products by Amplifier Technologies
(Tech Support Website)

Item #: AT1826
MSRP: $3,095.00


Amplifier Technologies AT1820 Series amplifiers meet the needs of home audio systems from two channel to home theater.


Simple and straightforward in design, the ATI AT1820 series offers models from 2 to 7 channels per chassis. AT1820 Series amps deliver 200 watts per channel to 8 ohms and 300 watts per channel to 4 ohms and offer tremendous value, performance, and reliability.


All ATI amplifiers are fully designed and assembled in the USA. ATI Class AB amplifiers are powerfully stable with a straightforward design for performance and value.


AT1820 Series amps are passively cooled with large heat sinks for efficiency and low noise operation. Featuring toroidal transformers with bi-filar windings ensures low noise and crosstalk, hallmarks of all ATI amplifiers.


Beginning with the the two-channel AT1822 to the seven-channel AT1827, all AT1820 Series amplifiers feature ATI’s Soft Turn-on protection.

The Soft Turn-on circuit gradually powers up the amp to avoid tripping the circuit breaker or dimming the lights. At the back of the amplifier, an RCA unbalanced input, an XLR Balanced input,

input selection switch and a pair of gold-plated, 5-way binding post outputs support each channel. There is also a 1/8” mono mini jack for +12V trigger, a gold-plated chassis ground lug, a fuse holder

and an IEC 20 Amp inlet for the provided detachable power cord. The supplied power cord will have either: a NEMA 5-15 plug (Type B) for use in the

USA, a BS 1363 (Type G) plug for use in the UK, or a Schuko (Type F) plug for use in the EU and the rest of the world.


Analog Audio Inputs One Single-ended (RCA) jack per channel & One Balanced (XLR) jack per channel Slide Switch to choose jack
Input Impedance 28 kΩ Nominal
Input Sensitivity 1.6 Volts for rated power Into 8 ohms
Gain 28dB
Polarity (Single-Ended) Non-Inverting Balanced; Pin-2 = Positive, Pin-3 = Negative for Non-Inverting Output
Speaker Output Binding posts; 1 pair per channel
Mode / Process Standby: Amplifier is ready to be turned on via front panel switch or remote trigger. Overcurrent, D.C., and/or thermal protection: Amplifier will cycle. Catastrophic D.C. or output stage failure: Amplifier will shut down.
Power Output - 8 ohms Per Channel 20 Hz-20 kHz, < 0.03% THD 200W 1 kHz, 0.005% THD, (Watts) 250W
Power Output - 4 ohms Per Channel 20 Hz-20 kHz, < 0.075% THD 300W 1 kHz, 0.015% THD, (Watts) 375W
Frequency Response +0, -.5 dB, 5 Hz to 20 kHz, load independent
Crosstalk > -100dB from 20Hz - 20kHz
Dimensions AT1827, AT1826, AT1825 17” x 7 3/4” x 17 5/8” (432 mm x 196 mm x 448 mm) AT1824, AT1823, AT1822 17” x 7 3/4” x 14 5/8” (432 mm x 196 mm x 372 mm)
Weight AT1827: Amp - 95.2 / 43.3 , Shipping - 107 / 48.6 AT1826: AT1825: Amp - 77 / 35 , Shipping - 92 / 41.8 AT1824: AT1823: Amp - 52.1 / 23.7 , Shipping - 58 / 26.4 AT1822: Amp - 44.25 / 20.1 , Shipping - 51 / 23.2


Additional Notes:

7-Year Warranty | Parts and labor against defects in parts or workmanship.

4RU 7.00” (178mm) Rack Mount | 7.75” (197mm) Standard Height

  1. All measurements taken at the 120VAC line voltage, unless noted. For 240VAC line voltage, current draw will be ~0.5X the currents listed in the table. Measurements taken while driving amplifier channels with 1kHz sine wave into 8Ω resistive loads.
  2. Nominal reading, ±5W.
  3. We do not recommend running the amplifiers for extended periods of time over the fuse rating. This was done for testing purposes only.
  4. All channels driven at 200W per channel 5 - Amplifier configured for 240VAC line voltage. Power measurements taken at 240VAC line voltage. 6 - Thermal Dissipation is in BTU/hr.


AT180 Series User's Manual

Prop 65WARNING: This product contains chemicals including Styrene which is known to the state of California to cause cancer, and Bisphenol A (BPA), which is known to the state of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

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