Good 4 channel amp

[SS ted 10+ year member]

Im looking for a good 4 channel amp from 75-100 rms and i dont want to change the factory head unit. I want loud crisp clean sound but heard u cant get that from a factory head unit. Im thinking if i get a good amp it wont matter. can someone help me with my options?

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[zako 10+ year member]

Well, depends on the budget. If you want something that's entry level but still maintains high implementation standards, consider an Alpine MRX series, such as F35 or F65. The MRX-F35 is rated at 4x60watts RMS at 4ohm. Being somewhat underrated (from past observations), in reality this amp should give you the 70watts you want. If you can afford more, the F65 should have even more power. On higher budget, Alpine PDX-4 or JL HD series should be a step up.

Another high quality amplifier is Boston Acoustics GT-475 (rated for 4x75). They used to be more expensive, but now you can find one for under $200, because the company is getting out of car audio business and some online vendors are clearing their old stock. If you want something even cheaper, see if you can find one of the discontinued MB Quart REF4.80. These have clean power and quite underrated, and will well over than the 4x80watts. These run really hot, so I wouldn't connect low impedance speakers to them.

 

[SS ted 10+ year member]

Ive been looking at jl Xd 400/4 the hd is a little more power and$$ than i want i wish they made a hd 400/4 but as far as sound quality will the xd be good enough for a ****** factory radio? I used to have bose in my old caddy and i want something comparable to the quality but loud. Ive also been looking at focal speakers too but dont really know much about those. I need something to keep up with two 13.5 jlw6 in ported box with two 750/1's

 

[dragnix 5,000+ posts]

the problem with the factory unit is the low output voltage which means you'll have to turn the gain up on your amps and there's a higher chance of picking up noise. At least get some Line Out Converter so you can increase the output voltage first.