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Compact size
Infinity Reference amplifiers have been engineered with a compact footprint to fit in more
vehicles even if available space is limited.
High and low level input
Speaker-level and low-level inputs allow the Reference 3004A to integrate with both
aftermarket and factory car stereo systems.
Variable crossover
Unlike many amplifiers available at similar prices, the Infinity Reference 3004A features
variable electronic crossovers circuits allowing for precise system tuning and performance.
Low noise and distortion
The Reference 3004A has been engineered using Balanced Differential Inputs to ensure
low noise and distortion even at high output levels. This also makes it far less susceptible
to line induced radiated engine noise.
Input Level Control
When low-level inputs are used, this control adjusts the input sensitivity between
200mVrms and 2.0Vrms. When high-level inputs are used, this control adjusts the input
sensitivity between 2Vrms and 20Vrms.
Full on-board protection
On-board circuitry protects the Reference 3004A from shorts, high-temperature,
overvoltage and undervoltage. An LED indicator is provided to let you know when one of
these conditions exists.
Preamp Outputs
Using multiple amplifiers, the Reference 3004A has full range preamp outputs allowing you
to feed an additional amplifier without using splitters.
Class H amp technology
The Infinity Reference 3004A 4 channels subwoofer amplifier delivers 400-Watts RMS
using a Class H amplifier design to ensure high output and minimum current draw.
Turn-on mode
This switch changes DC to REM to adapt with low-level signals or high-level signals,
this is especially helpful as part of remote turn-on lead of your installation more choice.
A selectable "Turn-on mode" can protect battery to avoid current drain, when you don't
expect to turn on your amplifier.
HARMAN International Industries, Incorporated
8500 Balboa Boulevard, Northridge, CA 91329 USA
www.infinityspeakers.com
High performance 4 channel car amplifier
© 2019 HARMAN International Industries, Incorporated. All rights reserved. Infinity is a trademark of HARMAN
International Industries, Incorporated, registered in the United States and/or other countries. Features, specifications
and appearance are subject to change without notice.
What's in the Box:
One Reference 3004A four channel amplifier
4 Bare wire-to-RCA adapters
Four 30A ATO fuses (2 installed, 2 spare)
Owner's Manual
4 Mounting screws (M4 x 53mm)
2 Infinity decals
1 logo badage
Specifications:
4 channel car amplifier
75 watts RMS x 4 at 4 ohms
(100 watts RMS x 4 at 2 ohms)
200 watts RMS x 2 at 4 ohms in bridged mode
(4-ohm stable in bridged mode)
Variable high- and low-pass filters (32–320Hz,
12dB/octave) on front and rear channels
Preamp and speaker-level inputs
Preamp outputs
Fuse rating: 30A x 2
8-gauge power and ground leads recommended –
wiring and hardware not included with amplifier
W x H x D = 320mm x 55.5mm x 180mm
W x H x D = 12-5/8" x 2-3/16" x 7-1/8"
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