QSC RMX 1450a Power Amplifier

The RMX1450a power amplifier steps up the output to 300 watts/channel at 8 ohms; 1400 watts at 4 ohms bridged -- with the low distortion you expect from QSC.

The QSC RMX 1450a Power Amplifier sets the standard for high quality, affordable amps for small to mid-sized systems thanks to its 300W per channel output (8 ohms), user-defeatable clip limiters, selectable low-frequency filters, and a wide array of ins and outs to integrate into virtually any system. QSC designed the chassis of the RMX 1450a to be less than 16 inches deep. XLR and 1/4-inch balanced inputs along with Speakon and binding post outposts get you connected to your favorite speakers.


- Professional quality performance incorporates road-proven QSC designs
- The 4000 watt RMX 4050a operates on a standard 15 amp plug (120V)
- Both the RMX 4050a and RMX 5050a feature a dual mono, high-current power supply for increased reliability and performance
- The RMX 4050a provides improved thermal performance yielding higher continuous power in 2 ohm stereo or 4 ohm bridged applications.
- Compact size up to 2500 watts in 2 rack spaces or 5000 watts in 3 rack spaces
- High-current toroidal transformers for greater 2 ohm power and low noise
- Independent user-defeatable clip limiters reduce distortion
- Selectable low-frequency filters (30 Hz or 50 Hz) protect speakers and increase headroom
- Balanced 1/4" (6.3 mm) TRS, XLR, and barrier strip inputs
- Touch-proof binding post and Neutrik Speakon outputs
- Front mounted gain controls for easy access
- Signal and Clip LED indicators to monitor performance
- Independent DC and thermal overload protection on each channel read more automatically protects amplifier and speakers
WARNING: Cancer and Reproductive Harm - www.p65Warnings.ca.gov.
read less

- Power Output Per Channel:
-- 8-ohms: 300
-- 4-ohms: 500
-- 2-ohms: 700
- Power Output Bridged 4-ohms: 1400
- Signal to Noise (20 Hz - 20 kHz) 8 ohm: > -100 dB
- Distortion (SMPTE-IM): < 0.01 percent
- Input Sensitivity at 8 ohm: 1.15V (+3.4 dBu)
- Voltage Gain: 40x (32 dB)
- Output Circuitry: Class AB
- Frequency Response: 20 Hz - 20 kHz: +0/-1 dB
- Damping Factor (1 kHz and below): > 300 at 8 ohms
- Dimensions: 3.5 inch tall / 2 rack spaces
Dimensions and Weight in Packaging
Base Item
Shipping Weight: 42 lbs
Shipping Dimensions: 24 x 22 x 6 in
Manufacturer Part Number (MPN): RMX1450a

For support or warranty questions, please contact the manufacturer:
Phone: 800-772-2834
Web: http://qsc.com/support

Reviewers gave this product an overall rating of 5 out of 5 stars. (1 ratings)
Submitted December 24, 2021 by Mike S in Charlotte, NC

"QSC RMX 1430a"

Overall: 5 out of 5 stars
(see rating details)
Verified Customer zZounds has verified that this reviewer made a purchase from us.
Very happy with my purchase. I purchased the QSC RMX1430a. When looking for an amplifier to go with my home theater, most of the time, I was being directed to Denon , Emotiva, Monolith etc. After doing my research, I decided to go with this professional amplifier and MAN, I never heard my Cerwin Vega VE-15's sound so good. The highs, mids and lows all expanded in sound. I'm award this amplifier has more power (300 watts/2 @ 8 ohms), but the quality of sound is out of this world. Did not know my 15 inch Cerwin Vega speakers can put out sound like this. I have a Denon X6500H AVR rated at 140 watts @ 8 ohms/ 2 channels, 2 500 Watts SVS PB 2000's, 4 Cerwin Vega SL5M surround speakers, 1 SL45C center channel , 4 Polk Audio Ceiling Speakers for Dolby Atom. This AVR was not enough to do the job with my Vegas. Now with the QSC RMX1430a, the sound is amazing. I will recommend this amplifier to anybody. Great job QSC RMX1430a. Very, very impressed. Mike S.
Sound quality is great.
Wish it had a trigger hookup and better way to adjust the settings. But, overall, I remain with the 5 stars on this amp.
Ease of Use
Just hookup the amp and the great sound will begin to play.
Well made product.
This amp is worth every cent.
Manufacturer Support
QSC Has always been a company I support. Past purchases: 2 QSC KW181's and KW153's.
The Wow Factor
5 star rating from me. Will recommend this product to anyone.

Musical Background:

DJ/Home Theater

Musical Style:

Jazz/R&B/POP/Hip Hop/Soul/60/70's Oldies
1 of 1 people (100%) people found this review helpful. Did you?
Thanks for your opinion!


  • 12 x  
  • 8 x  
FREE -Day Shipping!
Get it  for
Get it by if you order within
Shipping to