Small footprint for it's performance, awesome clarity, ease of installation and adjustment.

None to date, the thing is brand new, and I don't expect to have any problems.

The Alpine MRV-F357 in my opinion, is one of the most versital amplifiers available for a single or multiple amplifier system. With hi/lo pass crossovers for the mids and highs, bass EQ for the 5th channel, and adjustable crossover points for all channels, buying this amplifier had to be one of the easiest decisions for me to make.....

The sound quality of the new Alpine you ask? Superb. It's sounds awesome compared to the multiple amps that I've owned including '99 Fosgate Punch 400.4, '00 Eclipse 3650, and as good as...if not better than the PPI Pro Series for its value.

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I had a 2000 Eclipse 3650 in the mix less than 24 hours before the Alpine took control, and the sound quality improvment is evident. Not to mention, I had a heck of a time getting the 3650 to work. Considering the sub channel requires it's own input, otherwise it sums the gains from the front channels to drive the sub, and it's a nightmare to balance out. The Alpine is the answer to the problems that I've been having with system setup....

High quality. Even though the RMS is stated on the box, it's really higher than it says because they under rate it

Nothing, people that have a problem with just didn't hook it up right. People say that there isn't one brand that can do everything. Almost EVERYTHING in my car is alpine except the wires, Distribution block & CAP.

I extreamly like this amp very much. I have an entire Alpine set up in my car and it was not very expensive. This pushes my 2 12' Type R's very well. The bass is clear and you know when i'm coming down the block.

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The Phonix Gold AMP. I mean, Phonix Gold is one of the best out there, but Alpine is still a better amp all together for the price.