Showing 6 reviews for JBL MS-A1004

Customer Review Summary for JBL MS-A1004
Average Customer Rating is 4.3 out of 5 stars:
4.3
based on 6 Reviews
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Rating Distribution:
5 star:
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50%
4 star:
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33%
3 star:
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17%
2 star:
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Average Attributes Rating:
Durability
4.5
Value
4.2
Features
4.8
Design
4.8
Usability
4.7
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Quick Comparison:
Most Helpful Customer Reviews:
June 9, 2014 Small compact
Review by
Nafsusekale from San Gabriel CA
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Easy to install, small compact and very powerfull. Highly recommended
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May 27, 2014 Very good amp
Review by
John from Palmer, TX
Overall
Durability
Value
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I have 3 of these up front and 2 of the matching 500s on subs. I've had to send a few back for exchanges for various quality control reasons (pass through on a couple...channels 3 and 4 on at least one). That has been a hassle, but Sonic is pretty good about returns. When you get one that works, it is great. The digital crossovers are sooooo much more convenient and precise than a dial. SQ is very good, especially compared to other full range class D's I've owned. The noise floor is very low...maybe a result of the ease of setting gains with the included CD. Only time I have hiss is when I bridge and turn gains high as they will go before clipping. Not sure I buy pasmags RMS claims (400 x 2 bridged) but the JBL ratings seem honest. These are my keepers after trying MANY setups over the past year. Test for defects and then enjoy!
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May 20, 2014 Great amp, nice features, super easy
Review by
Bill from Gonzales, LA
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This amp replaced a Planet Audio amp that took up twice the footprint. Installation was simple and straight forward. The independent gain for input and output allowed for great flexibility. I'm using this amp without any of the crossover settings, just a straight pass through to 2 sets of Infinity Kappa component speakers. (Plus separate amp and 2 10" subs). My music has never sounded so alive. Everything is clean, clear, and extremely punchy and strong. There is also a warmth that wasn't there in my PA amp. I highly recommend this amp. I was also able to install it in my 2013 GMC Sierra Crew Cab behind the rear seat and have easy access through the rear seat armrest/cup holder. (removing the seats is a GIANT PAIN) The front control panel is sharp! I can't speak highly enough of this product.
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January 13, 2013 OK but not the best
Review by
Rudy from Houston, TX
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I have some issue with MS-A1004 amplifier. I used in a higher level audio system. And it makes whistling sound, even with the engine off, and even with radio off. I even unattached the input signal from it but the whistling still exist.
And there is other thing that makes it even stranger for me. I have two other amplifiers in this system, which are working perfectly. The other two are a DLS 3 channel class A/B amplifier (DLS CA 31) and JL Audio 500/1v2: Mono block Class D Amplifier.

I have done any checks you think of, which include isolation of power wires and signal wires, measuring the input voltage of power supply (battery), checking the speakers, checking the RCA wires,
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December 20, 2012 Great amplifier
Review by
Joar from Fjell, Norway
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Great amp.. Perfect for use in a small car like mine. Does not take a lot of space.
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June 9, 2012 sq amp
Review by
ebk from dover, de
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Value
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I would say it's one of the best amps out for sound quality.
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