Average Reviews:
(More customer reviews)I bought the QSC GX5 stereo amplifier for use in my band's practice studio. We previously used a Mackie mixer/amp setup and we recently bought an Allen & Heath mixer along with the QSC Amp. We've gone from a little noisy system to an absolutely silent (no hiss, no noise) system even when turned all the way up. It's nice! We A/B'd the amps and while the Mackie is rated to have more power, the QSC is clearly punchier and so much cleaner. I can't say enough about how nice this amp is. I've owned Crown, Crest and Yamaha amps as well and none of them were cleaner than this one.
As for durability, it's still new BUT QSC is offering a 6 year warranty for free on this model (until March 09) so I can't imagine they would do this if these amps were a service problem.
Oh and it looks great in my rack. I read somewhere that the amp is noisy when the cooling fans get going. Knowing this, I cranked the amp full and ran a punchy CD through the mixer full blast (no distortion!) and waited while the amp warmed up. After it reached operating temperature, the fan(s) indeed came on but by no means were they "loud." If I had this amp in a recording studio, I would have the amp in a soundproof room or enclosure as I suppose the fan could be audible during very quiet recording sessions. On the other hand, it is reassuring that I know the fans are indeed working, keeping the rails cool. For live sound, it just isn't a real issue.
Now I'm considering getting another QSC for a monitor amp. I heartily recommend this amplifier.
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The QSC GX5 amplifier is ideal for professional entertainers who require maximum performance and portability on a limited budget. QSC designers, headed by Pat Quilter, have optimized output and appearance while reducing raw material cost and weight. It's all here - dramatic styling, easy hookup and adjustments, excellent audio quality and QSC reliability. QSC GX5 Features Power levels matched to the most popular speakers used by entertainers Optimized for maximum real-world headroom into 4 Ohm and 8 Ohm speaker systems Inputs: XLR, 1/4-inch TRS and phono input connectors for compatibility with any source Outputs: Speakon combo accepts, 1/4-inch (TS) plugs or Speakon 2-pole and 4-pole plugs (connects 2 poles only). Binding posts support all other speaker wiring systems. Minimum depth chassis (10.1 inches/257 mm) fits in compact, inexpensive effects racks Lightweight - less than 26 lbs (12.5 kg) Detented gain controls for precise settingand matching of sensitivity GuardRail automatically protects the amplifier and loudspeakers from damage due to temperature rise or overdrive without shutting down the show Front panel LEDs monitor Power, Signaland Clipping Subwoofer/Satellite crossover built-inGX Entertainer GX amplifiers deliver just the right amount of power to the most popular speakers used by entertainers. Most loudspeaker manufacturers recommend an amplifier with power output equal to the speaker's Program (Music) Power rating or two times (2 x) the Continuous (RMS) Power rating. The GX5 supplies maximum possible power to 4 ohm and 8 ohm loads. Owners of popular 4 ohm loudspeakers (dual-woofer, two-way models and many subwoofers) will find the 700 watt (4 ohm) power of the GX5 an ideal match. Technical Notes A true Class B biasing system combines maximum
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