MB Quarts Onyx 4.80

[sqhertz 5,000+ posts]

anyone have anything to say about these amps? they seem to be priced very low for the amount of power theyre rated to put out. MB Quart ONX4.80 ONYX 4-Channel Car Amplifier/Amp

i remember reading something about there being a lot of plastic in these amps...or was it the lower series?

i would be running a set of components and a small 8" sub like an E8. i was also looking at kickers zx350.4 simply because ive never had any problems with any kicker amp ive owned in the past but they are a little more expensive than the MBQ.. suggestions for a similarly rated amp?

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[TheUnderFighter 10+ year member]

I just installed one in a buddy's ride, I'm happy with it. He's happy with it. It's only driving stock component speakers right now, so there's not much to say really. I mean, they sound good and loud and clear. I have the gains all the way down on the amp.

It certainly is a lot of plastic though, which keeps it light. It still has heat fins too, so that's good. I don't know much about amps, and I'm not a refined SQ judge so I really can't say much more about it, other than it is getting the job done, and at a very low cost.

If you're open to looking used, the Kicker kx 350.4 go on eBay for under $100 quite often, and I think that'd be a better deal. Note, that is the kx, not the zx.

 

[sqhertz 5,000+ posts]

boo, plastic. im not looking to buy an amp and replace it later down the road. ive owned both the earlier KX and the ZX kicker amps and loved em.

i dont mind going used but would rather avoid ebay when buying amps. maybe something from the classifieds...

 

[zako 10+ year member]

People say these amplifiers are ok. My only concern would be to have this amplifier installed optimally for cooling. I have a 4x80 watt MB Quart REF4 amplifier powering my woofers and tweeters in bi-amp setup. When there is cargo in the trunk that obstructs air movement around the amplifier, it sometimes shuts off playing songs with thick mid-bass. I assume that if you bridge a couple of channels and run subwoofer off them, the amplifier will become even more sensitive to heat issues.