Excerpt: Love the output for the physical size. Installed under the seat in a hatchback Subaru Impreza. Running with an Excelon HU and one sealed 10W6. Head unit's DSP features allow me to make the somewhat-decent OEM speakers sound really good with this amp. Adjusted gains per JL's specs.
Pros: Energy Efficient, Good Power Output, Great Sound Quality, Small Footprint
Cons: Bass knob is separate, Cost - unless: "price shown in cart"
Summary: The Bose Centerpoint system in my 2009 Saab is difficult to upgrade because the head unit and Bose amp share controls and crossover functions. The HD900, with its five channels, differential balanced inputs (you must have this to work with the Bose system), high level speaker inputs and size...
Pros: The size, power and build quality. Makes me happy every time I turn it up!
Summary: I finally decided to upgrade my sound system in my show car/weekend cruiser so my search began at Crutchfield as their customer service & tech support is top notch. I have limited space to inconspicuously mount an amp in a convenient location in my vehicle so I wanted a nice 5-channel amp.
Pros: Great power, incredible sound quality, compact size, very clean & easy install.
Cons: Not putting this in my daily driver as I may have to buy another one.
Summary: First of all, let's get the price question out of the way. The price of this amplifier is stupid expensive, period. That being said, and out of way for any further discussion, this amplifier lives up to every claim made by JL Audio and other Reviewers.
Pros: Superior sound quality, powerful, configurable, cooler operation, smaller, lighter.
Summary: This amps powers two sets of JL C5-650's, front and rear and two 10TW1 subs in a sealed box. It produces prodigious amounts of power (my perception). The nicest thing I can think of to say about this amp is that it does what it's supposed to do without notice.
Pros: plenty of power, compact size, great feature set
Cons: very minor quibbles- does seem to run warm, took a while to tune it correctly.
Conclusion: Small Amp that packs a big bunch !!! Took up 65% less real estate then my two old slash amps . Replaced 300/4v2 and 250/1v2 . I gained room and a improvement in sound quality the extra amps really makes a difference .Sounds great even at lower volume