Integra ADM-20.4 Amplifier

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.

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.

From input to output, signal purity is maintained at every stage. Housed in a rigid anti- resonant steel-plate chassis and finished with a tough one-piece aluminum front panel, the ADM-20.4 is highly resistant to vibration. A massive EI transformer delivers a steady supply of power to the speakers, while two large 10,000 μF capacitors, heavy- duty transistors, and low-impedance copper bus bars work in concert to enhance the power and fidelity of your audio sources. A heavy-duty aluminum heat sink keeps the unit running cool for superior reliability and longer life.

The ADM-20.4 sports banana plug-compatible speaker posts to ensure a positive connection to the loudspeakers of your choice. The unit is also equipped with selectable audio or 12 V triggers providing automatic power on/off with your home theater system plus a rearside level adjustment. A pair of line-in and line-out ports provide the multi-room capabilities to which this amplifier is perfectly suited.

AMPLIFIER
• # Channels: 2

Rated Power Output
• 1 kHz 0.8% THD (FTC): 65W at 4 Ω
• Continuous 6 Ω Rated: ✓
• Continuous 4 Ω Rated: ✓
• Amplifier Frequency Response (WRAT): 10 Hz-100 kHz/ +0, -3 dB

ADVANCED FEATURES
• 3-Stage Inverted Darlington Circuitry: ✓
• All Discrete Output Stage Circuitry: ✓
• Heavy Duty EI Transformer: ✓
• Large Capacitors for Effective Power Supply: X (x2 – 10,000 uF Each)
• Low-Impedance, Copper Bus Plates for Perfect Ground: ✓
• High-Current, Low-Impedance Drive: ✓
• Flat, High-Rigidity, Anti-Resonant Chassis: ✓ (1.6mm Thick)
• Multi-Zone Audio Capability with Line-In and Line-out: ✓

CONNECTIONS
• Gold-Plated RCA Audio Input / Output: ✓
• Gold-Plated RCA Transparent Binding Post: ✓
• 12V Trigger In / Out: ✓

MISC
• Input Level Adjustment: ✓
• Auto Standby On/Off Switch: ✓
• Aluminum Front Panel with Power Light: ✓
• Impedance Selector Switch: ✓ (4 Ω and 8 Ω)
• Detachable AC Cord: ✓
• Rack Mount Kit Available: IRK-120-3A
• Warranty: 3 years

TECHNICAL SPECIFICATION
AMPLIFIER SECTION
Power Output
• 4 Ω (1 kHz, 0.08%, 2 Channels Driven, FTC): 65 W/Ch
• 8 Ω (1 kHz, 0.08%, 2 Channels Driven, FTC): 75 W/Ch
• THD: 0.08%

GENERAL
• Power Supply AC: 120 V~, 60 Hz
• Power Consumption: 160 W
• No-Sound Power Consumption: 45 W
• Standby Power Consumption: 0.5 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)
• Weight: 17.6 lbs. (8.0 kg)