High performance 4-channel mobile audio amplifier
2" H 13 1/4" W 8 1/8" D
5.08cm H 33.66cm W 20.64cm D
Power and style that amplifies
The PA660.4 is a four-channel class A/B amplifier with built-in fully variable low-pass crossover. Equipped with remote gain, the PA660.4 is capable of two-channel operation with a maximum power of 600 Watts when both the front and rear bridged channels are driven into 4 ohms speaker loads.
75 Watts x 4 continuous, 85 x 4 dynamic power (2 ohm load), 4 channel mode.
150 Watts x 2 (4 ohm) continuous power, 2 channel mode.
CEA-2006 compliant specifications for true, accurate power ratings.
4-channel, dual bridge-mono (2-channel), or dual simultaneous stereo/mono operation provide a variety of configurations and setups: 4-channel for front and rear speakers; 2 speakers and a sub; 2 subwoofers
2 ohm stable 4-channel operation.
High-speed MOSFET switching power supply and high current bipolar output transistors pump maximum voltage and high current to your speakers or subwoofers.
Double layer fiberglass epoxy printed circuit boards for more rigidity, less shrinkage and a smaller overall amp footprint.
6-way Smart System Protection (SSP) circuits
Variable bass boost (0dB, +8dB) for extra bass thump.
Variable input gain optimizes match with different signal sources (250mv to 8V).
RCA outputs (front channels only) for easy daisy chaining of other amplifiers.
Mounting hardware with rubber isolation grommets and extra fuses included.
Multi-color status LED gives instant information on amplifier operation.
|Total Frequency Response||10Hz-30kHz|
|Signal-to-noise (Referenced to rated power)||75 dBA|
|Distortion at Rated Power||0.9 %|
|Minimum Impedance Bridged||4 ohms|
|Minimum Impedance Not Bridged||2 ohms|
|High Pass Filter|
|Low Pass Filter|
|Effective Damping Factor||>100|
|Max Sensitivity||250mV-5V (rear) dB|
|Product Weight (each)||7.60 pounds|
|Width||13 1/4" (33.66cm)|
|Depth||8 1/8" (20.64cm)|
|Channel Notes||Bridgeable Class AB MOSFET|
|Total Dynamic Power||600 watts|
|Bass Boost Characteristics||Variable (0dB to +8dB) Hz|
|12V & Ground Cable Gauge||4 AWG|
|Total Shipping Weight||9.60 pounds|
Amplifier Power Specs
|RMS Power at 14.4V|
|Watts per channel NOT bridged @ 1 kHz|
|4 ohms||75 watts|
|2 ohms||85 watts|
|Watts per channel bridged|
|4 ohms||200 watts|
|Dynamic Power at 14.4V|
|Watts per channel NOT bridged @ 1 kHz|
|4 ohms||150 watts|
|2 ohms||170 watts|
|Watts per channel bridged|
|4 ohms||300 watts|
Specifications, dimensions and features subject to change without notice. For more information call us at 1-800-377-7655 (USA and Canada). Outside of North America call +1 (410) 358-3600.
6 reviews with an average of 5Write your own review
by Chance Blackwell, July 29, 201013 out of 13 people found this review helpful.
Great clean power for a very nice set of Polk Speakers. Small size has been a god send.
None. Except for the fact that despite my wildest dreams I am not sponsored by Polk.
Picked this amp up to finally give the love to my Polk MOMO 6 1/2 door speakers they deserve. The amp has really brought the best out of the speakers and I have been highly impressed with the clean power and amazing clarity they have brought out of the MOMO's which previously were running off of a Pioneer 6900UB Head Deck. The small footprint of this amp has also made working with it much easier and has allowed for an under seat install which is the first time I have had an amp small enough to install there.
by Gage, January 4, 20114 out of 6 people found this review helpful.
High quality construction and great sound.
None that I have noticed.
I bought this amp a few days ago and I absolutely love it. It brings new life to my Infinity Kappas that were previously not being used to their full potential. The sound produced is extremely clear and vibrant and the amp does all of this without becoming hot to the touch (even after hours of continuous use). The pricing is very reasonable for the overall quality that is evident in the workmanship and materials used (solid aluminum construction) along with the superb sound output.
by Alan, January 8, 20124 out of 4 people found this review helpful.
Clean. Thats all I can say, every sound is faithfully reproduced, even to an audiophile lie me.
Not particularly powerful, but that's not the point/
Overall a very very crisp sound that allowes my Polk 5.25's and 6X9's to produce every sound I ask of them.
by StereoJunkie, September 21, 20113 out of 3 people found this review helpful.
Clean Power Bargain Price- best of it's class
the shape being very rectangular could be a concealment problem if under your seat- Not in my Tacoma though!
this amp cannot be topped for quality watts-per-dollar, price, looks, and function. I have owned a number of car amps from Rockford Fosgate, Alpine, and others, and must say this amp tops them all, regardless of price. This is certainly not a "powerhouse" amp, but you know that from the wattage you're buying. However, the PA660 packs plenty of power for any reasonable listener, especially when coupled with a sub and quality speakers (polk of course-db570s anyone?). The installation couldn't be simpler due to the labelled ports, and properly placed inputs and switches. the speaker wire clamp system is unique, and holds the wires in lock tight! I couldn't be happier with the improvement to the clean, powerful sound of my stereo after the replacement of my Alpine V Series amp for this one. Night and day difference. Well done.
by Tony, March 8, 20132 out of 2 people found this review helpful.
Clean sound and stays cool
I have this amp mounted to the face of the storage tray behind the driver seat in a 2002 dodge ram 1500 standard cab. This amp is supplying power to a set of polk dxi6500 components in the door and the rear is bridged to a kicker compvr12 @ 4 ohm load centered behind the middle console, signal is fed via a JVC KD-HDR50. though not very loud... it is amazingly clean and detailed. Only way it could be made better would be to add a pa880 for my sub and fill the rear channels of the pa660 with a set of dxi 5 1/4's in the rear location. Pa660 is a wonderful amp. Highly recommended
by jon, October 2, 20130 out of 0 people found this review helpful.
awesome black metal case great sound quality out of the am very easy installation very easy tuning
purchase this amp at best buy for $96 installed it on his cell Polk Audio Components and a set of Kenwood 6 by 9 amp is awesome high quality amp would recommend anybody buying the AM
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