Infinity REF-704A
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Infinity REF-704A

Reference Series 4-Channel Car Amplifier 1000W Peak Power 400W RMS

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High- and low-level inputs

Speaker-level and low-level inputs allow Reference amps to work with just about any car stereo, aftermarket or factory.

High- and low-level inputs

Variable crossovers and bass boost

Unlike many amplifiers available at similar prices, Reference amps feature variable electronic crossovers and bass boost circuit to allow for fine-tuning.

Variable crossovers and bass boost
RMS Power @ 4 ohms 70 watts x 4 channels
Signal-to-Noise Ratio >80 dB
Total Peak Power Output 1000 watts
THD at Rated RMS Power <1%
Fuse Rating 30A x 2
Speaker Level Inputs Yes - with included adapter
Number of Channels 4
RMS Power @ 2 ohms 100 watts x 4 channels
Built-in Crossover Low-Pass (LP), High-Pass (HP), Full (AP)
Minimum Impedance Unbridged 2 ohms
Minimum Impedance Bridged 4 ohms
Bridged RMS Power 200 watts x 2 channels
Amplifier Series Reference (Infinity)
Total RMS Power Output 400 watts
Maximum Input Gauge Size 4 AWG
Bass Boost 0 - 9 dB
  • UPC: 050667370909
  • Weight: 10
*Warranty: 1 Year warranty.
1 Year warranty from implies that repairs must be returned to, not the manufacturer. More information can be found in our help section under returns & warranties.
What's not covered : Misuse, abuse, defacement, physical damage of any kind, and improper installation / operation. Video and multimedia equipment with damaged or cracked screens.Subwoofers and speakers are not warranted against being blown, burned or abused.