Next-Level Home Audio

Expand your A/V receiver’s audio distribution capabilities in the home theater and beyond with this powerful two-channel WRAT component, featuring auto power on and Three-Stage Inverted Darlington Circuitry.

  • 75 Watts per Channel at 8 Ohms, 1 kHz, 0.08% THD, 2 Channels Driven, FTC
  • WRAT (Wide Range Amplifier Technology)
  • Three-Stage Inverted Darlington Circuitry to Reduce Distortion
  • All Discrete Output Stage Circuitry


Three-Stage Inverted Darlington Circuitry

An important upgrade to the core WRAT concept is Integra’s Three-Stage Inverted
Darlington Circuitry, a low negative feedback topology featuring a discrete triple
transistor array to cut distortion and boost current flow to the speakers. Discrete transistors also run
cooler, extending the life of your output stage for more years of trouble-free service.

All-Analog Circuitry Delivers Ultra-Clear Sound

A standard integrated amplifier has the dual task of both processing and amplifying audio signals, and is therefore susceptible to interference from digital circuitry. As a dedicated power amp with all-analog circuitry, the ADM-20.4 is protected against digital interference. When partnered with a quality pre-processor, this unit offers all the benefits of pure analog amplification: a warm, musical, and full-bodied sound.

High Output Power Supply

DTS Play-Fi is the most widely adopted Whole Home Audio Technology in the marketplace- it puts you in complete control of your Music and allows you to effortlessly stream from your smartphone, tablet, or PC to DTS Play-Fi speakers and devices throughout the home. Easy to set-up, easy to expand, and easy to enjoy- DTS Play-Fi and Integra- a smart solution.

Perfect for Custom Installation

Integra products are designed and engineered to meet the demands of leading custom installers. CI Centric features such as Web Setup, Onboard HDMI Diagnostics, and compatibility with Remote Monitoring systems like OVRC Pro and Domotz make Integra AVRs the choice of the modern integrator.  Optional rack mount kits provide a clean, finished look when installed in racks and cabinets, while a unique bright white back panel facilitates connections in hard-to-reach areas.

Additional Features

Advanced Features

Heavy Duty EI Transformer

Two Large 10,000 μF Capacitors for Effective Power Supply

Low-Impedance Copper Bus Bars for Perfect Ground Potential

High-Current, Low-Impedance Drive

Flat, High-Rigidity, 1/16” (1.6 mm) Anti-Resonant Chassis

Multi-Zone Audio Capability with Line-In and Line-Out

Integration Features

12 V Trigger Input and Output with Audio Switch

Banana Plug-Compatible, Color-Coded Speaker Posts

Input Level Adjustment on Rear Panel

Auto Standby On/Off Switch

Aluminum Front Panel with Power Light

Impedance Selector Switch (4-8 Ohms and 8-16 Ohms)

Optional Rack Mount Kit Available IRK-155-3D


Power Output

75 W/Ch at 8 Ohms, 1 kHz, 0.08%, 2 Channels Driven, FTC

65 W/Ch at 4 Ohms, 1 kHz, 0.08%, 2 Channels Driven, FTC

THD (Total Harmonic Distortion + Noise)

0.08% (Rated Power)

Damping Factor:

60 (Front, 1 kHz, 8 Ohms)

Input Sensitivity and Impedance

870 mV/20 k-Ohms (Unbalanced)

Rated RCA Output Level and Impedance

0.87 V/270 Ohms (Line Out)

Frequency Response

10 Hz–100 kHz/+0 dB, -3 dB

Signal-to-Noise Ratio

110 dB (Line, IHF-A)

Speaker Impedance 4 Ω – 16 Ω
Headphone Output Impedance 330 Ω
Headphone Rated Output 80 mW (32 Ω 1 kHz 10 % THD)
Power Supply AC 120 V, 60 Hz
Power Consumption 160 W
Stand-by Power Consumption 0.5 W
No-Sound Power Consumption 45 W
Dimensions (W X H X D)

17 1/8˝ x 5 1/2˝ x 12 1/4˝

(435 x 139 x 317.3 mm)


17.6 lbs. (8.0 kg)

Dimensions (W X H X D)

22 1/2˝ x 10 3/8˝ x 16 1/2˝

(572 x 264 x 419 mm)


21.6 lbs. (9.8 kg)