This QSC RMX2450A amplifier is a powerhouse with 2400 watts of power, making it perfect for any pro audio equipment setup. It has two channels and two outputs, along with TRS/Audio Jack inputs for versatile connectivity options. The black color and rack mountable design make it both sleek and practical. This amplifier is designed by QSC, a reputable brand known for their high-quality audio equipment. The RMX2450A model is perfect for musicians, DJs, and anyone in need of a powerful amplifier. With its numerous features and impressive wattage, this amplifier is sure to impress.

QSC RMX2450A Features

  • Compact size — up to 2500 watts in two rack spaces, or 5000 watts in three 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
  • The 4000-watt RMX4050a operates on a standard 15 amp plug (120V)
  • Both the RMX4050a and the RMX5050a feature a dual mono, high-current power supply for increased reliability and performance
  • The RMX4050a's particularly exceptional combination of cooling capacity and electrical efficiency provides robust thermal performance suitable for high continuous power in 2-ohm stereo or 4-ohm bridged applications.
  • Balanced 1/4-inch (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 for monitoring performance
  • Independent DC and thermal overload protection on each channel automatically protects amplifier and speakers
  • 3-year warranty plus optional 3-year extended service contract
 Model RMX 850a RMX 1450a RMX 2450a RMX 4050a RMX 5050a
Power per Channel, Stereo Mode (both channels driven)
8Ω, FTC 20 Hz–20 kHz, 0.1% tdD 185 W 260 W 450 W 800 (650**) W 1050 W
8Ω, EIA 1 kHz, 0.1% tdD 200 W 300 W 500 W 850 W 1100 W
4Ω, FTC 20 Hz–20 kHz, 0.1% tdD 280 W 400 W 650 W 1300 W 1600 W
4Ω, EIA 1 kHz, 0.1% tdD 300 W 500 W (0.5% tdD) 800 W 1400 W 1800 W
2Ω, FTC 20 Hz–20 kHz, 1% tdD – – – 1600 W 2000 W
2Ω, EIA 1 kHz, 1% tdD 430 W 700 W 1200 W 2000 W 2500 W
Power, Bridge-Mono Mode
8Ω, FTC 20 Hz–20 kHz, 0.1% tdD 530 W 800 W 1300 W 2600 W 3200 W
8Ω, EIA 1 kHz, 0.1% tdD 600 W 900 W 1500 W 2800 W 3600 W
4Ω, EIA 1 kHz, 1% tdD 830 W 1400 W 2400 W 4000 W 5000 W
Signal to Noise (20 Hz–20 kHz) -100 dB
Distortion (SMPTE-IM) < 0.01% < 0.02%
Input Sensitivity at 8Ω 1.15V (+3.4dBu) 1.23V (+4.0 dBu) 1.42V (+5.3 dBu)
Voltage Gain 31.6x (30 dB) 40x (32 dB) 50x (34 dB) 64x (36 dB)
Output Circuitry Class AB 2-tier Class H 3-tier Class H
Current Draw (120 V AC) Typical, 1/8 power pink noise at 4Ω* Severe, 1/3 power pink noise at 4Ω* 4.5 A 6.6 A 6.0 A 9.6 A 6.3 A 15.6 A 10.0 A 20.1 A 13.9 A 26.9 A
AC Mains Plug 100/120V 230V NEMA 5-15 CEE7/7 NEMA 5-20 CEE7/7
Distortion (typical) 20 Hz–20 kHz, 10 dB below rated power 1 kHz and below, full rated power < 0.03% tdD, 4Ω and 8Ω < 0.03% tdD, 4Ω and 8Ω < 0.02% tdD, 4Ω and 8Ω < 0.02% tdD, 4Ω and 8Ω
Frequency Response 20 Hz–20 kHz: +0/-1 dB -3 dB points: 5 Hz and 50 kHz (LF filter bybassed, 8Ω)
Damping Factor (1 kHz and below) > 300 at 8Ω > 250 at 8Ω
Input Impedance 10 kΩ unbalanced; 20 kΩ balanced
Input Stage Clipping 10 V rms (+22 dBu) 6.4 V rms (+18 dBu)
Cooling Continuously variable speed fan, back-to-front air flow
Connectors (each channel) Input: Active balanced; 3-pin Euro-style detachable terminal block and XLR (pin 2+) Output: Touch-proof binding posts; Neutrik Speakon®
Controls Front: AC switch; Channel 1 & 2 gain knobs Rear: 10-position DIP switch
LED Indicators Power on: Green; Signal: Yellow (1 per channel); Clip/Protect: Red (1 per channel)
Amplifier Protection Full short circuit, open circuit, tdermal, ultrasonic, RF protection. Stable into reactive or mismatched loads
Load Protection Turn-on/off muting; AC coupling (850, 1450); Triac crowbar (1850HD, 2450, 4050HD, 5050) on each channel
Product Dimensions (H×W×D) 89 (2 RU) × 482 × 404 mm 3.5 (2 RU) × 19 × 15.9 in 132 (3 RU) × 482 × 404 mm 5.25 (3 RU) × 19 × 15.9 in
Carton Dimensions (H×W×D) 610 × 560 × 153 mm 24 × 22 × 6 in 610 × 560 × 229 mm 24 × 22 × 9 in
Net Weight 15.9 kg / 35 lb 18.2 kg / 40 lb 20.2 kg / 44.5 lb 30.8 kg / 68 lb 33.1 kg / 75 lb
Shipping Weight 18.6 kg / 41 lb 20.9 kg / 46 lb 23 kg / 50.5 lb 34.9 kg / 77 lb 37.6 kg / 87 lb
Power Requirements 100, 120, 230 V AC (factory configured), 50–60 Hz
List price: $1,232.79
Price: $1,049.99
SKU: RMX2450A
Catalog: 
Commercial Amplifiers
Brand: 
QSC Audio
Dimensions: 25 in × 23 in × 6 in
Weight: 45 lb