ART SLA-4 4x140W Power Amplifier Reviews
The ART SLA-4 is a 400W studio linear power amplifier that delivers the clean power necessary for any professional audio or commercial sound environment. A 4-channel, single rack-space amplifier, you can easily switch the ART SLA-4 between multi-channel, stereo, and bridged mono modes. Separate mode switches let you bridge channels one and two, three and four, or both channel pairs for the ultimate in flexibility. A SmartFan cooling system, high-quality decoupling system, and included tamper-proof cover round out the professional ART SLA-4.
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Highest Rated Reviews
No BS
Very simple and easy to use. No noise or excessive heat. The one thing I would change is the layout of the posts on the rear panel. They are a bit cramped, but it's hard to complain since it all fits in one rack slot.
You get a lot in one rack space
I have been using an ART SLA-1 power amplifier in my rack based live performance sound system for about three years, because size and weight are critical factors in all my equipment choices and the power output is more than sufficient for any venue where I sing. When I determined that I really needed to have a separate channel for my stage monitors, I chose the SLA-4 based on my extreme satisfaction with the SLA-1. So far, I have only used it for two performances, but the operation and performance are identical the SLA-1, but with the addition of two more channels. Hey, i could add a subwoofer! The toroidal transformers produce great power with significant weight savings from conventional transformers. The cooling fan is slightly louder than the fan on the SLA-1, but then it is cooling four channels instead of two. It is not annoyingly loud, or even really noticeable except by the operator, and then only when the room is otherwise silent. I highly recommend this amplifier, especially for a traveling sound system when size and weight are considerations.
GREAT AMP!!!!
Great amp, clean, quiet and love the 1u size...
art sla4 - awesome
I love this amplifier. Its small, robust and quiet. The cooling fanmakes virtually no noise even in my studio in dead silence, I can't hear it. Plent of power for monitors.
Nice clean amp
This amp is very clean for what I use it for.. It drives my home stereo and studio monitors. My high end floor speakers never sounded this good with the receiver amp. I'm thinking about getting another one for my Home theater system.. Thanks Sweetwater and ART for good products at a fair price.
All the features don't mean anything if it hums louder than your speakers.
So, after some research, I purchased this unit to power my studio monitors and subwoofer. That was a mistake. I was aware of the fact that the fan might be loud. Not a huge deal to me. If you're savvy like I am it really wouldn't be that hard to replace it with a quieter one. The fan noise isn't really that bad, but this thing just hums with what sounds like 60Hz/Poor DC rectification on its own without the speakers plugged in and it continues on down the line to them. I have everything in my rack isolated and tested for ground loop issues. I even moved my power conditioner away from it into a separate rack. Unplugged cables. Checked them. Everything. Now I'm stuck with a $ hornet's nest powering my nice studio monitors and it's going to cost me out of pocket to return it. Pass on this one my friends.
