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QSC RMX 850 Power Amp

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QSC RMX 850 Power Amp (RMX850)

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Rated 5 out of a total of 5 reviews.

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Blemished items are customer returns, open box, ding n dents and re-stocked items. These items are in great condition and very similar to new, except for packaging that may show wear or may not be original. Not covered by manufacturer warranty, but covered by our 30-Day Satisfaction Guarantee.

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QSC RMX 850 Power Amp - Mint Condition

$324.72


Product Information


Clean, dynamic power and reliability pros depend on.

The QSC RMX 850 Power Amp delivers 200W/ch @ 8 ohms, 300W @ 4 ohms, and 430W @ 2 ohms. Bridged mono: 600W @ 8 ohms, 830W @ 4 ohms. It features 1/4" TRS, XLR, and barrier strip balance inputs; binding post and Neutrik Speakon© outputs; front-mounted gain controls for easy access; independent and defeatable clip limiters; selectable low-frequency filters (30Hz or 50Hz) that protect speakers and increase headroom; signal and clip LED indicators; independent DC and thermal overload protection on each channel; and variable-speed fan. 2U rackmount.

With our Guaranteed Lowest Price, you can be assured of complete satisfaction and the lowest available price, or your money back!

QSC RMX 850 Power Amp Features:

  • Unmatched performance at a breakthrough price
  • Requires 2 rackspaces
  • 1/4" TRS, XLR, and barrier strip balanced inputs
  • Binding post and Neutrik Speakon outputs
  • Front-mounted gain controls for easy access
  • Independent and defeatable clip limiters
  • Selectable low-frequency filters (30Hz or 50Hz)
  • Signal and clip LED indicators
  • Independent DC and thermal overload protection
  • Variable speed fan
  • Stereo: 200W @ 8 ohms
  • Stereo: 300W @ 4 ohms
  • Stereo: 430W @ 2 ohms
  • 3-year warranty

QSC RMX 850 Power Amp Includes:

    3-year warranty
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Sort Reviews By
5 Star Rating

Great Amps

We have a couple of them in our system driving a combination of EV's and various other speakers in and around the sanctuary and they have never failed. Very reliable. Sunday service often has lots of music. Some times it's the choir, a New Orleans jazz band, prerecorded music, piano, quintets, quartets, it doesn't seem to matter. This amp handles it flawlessly.

Reviewed by The other Bob on 2/8/2007 who plays Secular and non-secular music..

10 people found this review helpful.
1 person found this review unhelpful.
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5 Star Rating

Very Nice Amp

The QSC RMX 850 is a sturdy, well-built amp that can perform. It carries with it QSC quality and reliability. After replacing my behringer amp with this one, I could see why most of my friends recommend QSC. The sound is clear, very low distortion, very low noise, and it doesn't heat up very much. This is a great amp for basic to medium needs, whether you're using it to power monitors, cabs, or even a sub, you won't be disappointed.

Reviewed by mountain on 9/26/2006 who plays rock, pop.

5 people found this review helpful.
1 person found this review unhelpful.
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5 Star Rating

Great hi-fi amp

I've heard QSC amps in several hi fidelity systems so when I needed a new amp I bought an RMX 850. The amp is used below 1600 to drive the woofers of a pair of 1961 Altec 605A Duplexes. The resulting sound has excellent well defined bass, realistic vocal tonality and wide imaging with plenty of depth. The only drawback is the fan noise but as that noise isn't coming through the system it's easy for your mind to filter it out at low volumes. Given the high sensitivity of the 605s and the intended use I doubt the amp ever puts out more than a couple of watts, the thing should last forever. One can spend a great deal more money on "hi-fi" amps and not get as good a sound. I need to get another one for the PA in my music room.

Reviewed by LexTom on 6/28/2007

3 people found this review helpful.
0 people found this review unhelpful.
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5 Star Rating

RMX 850

It sounds great. It's loud enough for practice and small shows. The only bad thing about it is it clips like crazy. Granite I am running 2 vocals, bass guitar, and the bass drum (which is peaking it). It would over heat from the clipping and turn off as a protection system. I tried putting a fan behind it, and that seemed to work, but I've only done it once. So if all you need it for is vocals, then it's great.

Reviewed by AMcB on 1/8/2007 who plays Hardcore/Emo/Rock/Indie.

7 people found this review helpful.
5 people found this review unhelpful.
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5 Star Rating

Great Power Amp

The QSC RMX 850 will be able to handle most speakers. The sound it pumps out is very good, better than some Crown Amplifiers I have used. For an average user, this amp will be very dependable. It rarely heats up, which is always good to know.

Reviewed by soundman on 10/4/2006 who plays rock.

4 people found this review helpful.
3 people found this review unhelpful.
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