Comes with unit only. Has some surface scuffs. Condition is tested and working, pulled from a working environment. Shipped USPS for FREE the very same day you order to make sure you get it FAST. If you have any issues with this item at all please just me a message immediately, before leaving feedback, and I promise to solve it whether that means a full refund or a replacement. Whatever the case, I’m here to make sure your experience ordering from me goes well.

If you have any issues with this item at all please just me a message immediately, before leaving feedback, and I promise to solve it whether that means a full refund or a replacement. Whatever the case, I’m here to make sure your experience ordering from me goes well.

QSC RMX 2450 is a professional 2-channel power amplifier from QSC’s RMX Series, designed for reliable, high-value performance in sound reinforcement applications like live events, touring, installations, performing musicians, and mobile DJ/entertainment setups. 

It is a rugged, fan-cooled, 2-rackspace (2RU) unit known for delivering clean, dynamic power with low distortion, road-proven reliability, and a compact chassis (less than 16” deep). It uses a high-current toroidal transformer, ample filter capacitance, and a 2-tier Class H output circuitry for efficient power delivery, excellent thermal performance, and the ability to drive demanding loads (including 2-ohm stereo or 4-ohm bridged). 

The “TESTED” in the query likely refers to a used/refurbished unit that has been verified working, common in secondary market listings.

Key Power Ratings (Continuous Average Output Power)

Stereo Mode (both channels driven):

• 8Ω: 450 W (FTC 20 Hz–20 kHz, 0.1% THD); 500 W (EIA 1 kHz, 0.1% THD)

• 4Ω: 650 W (FTC 20 Hz–20 kHz, 0.1% THD); 750 W (EIA 1 kHz, 0.1% THD)

• 2Ω: 1200 W (EIA 1 kHz, 1% THD) 

Bridge Mono Mode:

• 8Ω: 1300 W (FTC 20 Hz–20 kHz, 0.1% THD); 1500 W (EIA 1 kHz, 0.1% THD)

• 4Ω: 2400 W (EIA 1 kHz, 1% THD) 

These ratings highlight its capability for substantial output in bridged configurations, making it suitable for powering subwoofers or larger systems. 

Additional Specifications

• Signal to Noise Ratio (20 Hz–20 kHz): > -100 dB (at 8Ω)

• Distortion (SMPTE-IM): < 0.02%

• Distortion (Typical):

• 20 Hz–20 kHz, 10 dB below rated power: < 0.03% THD (4Ω and 8Ω)

• 1.0 kHz and below, full rated power: < 0.03% THD (4Ω and 8Ω)

• Frequency Response: 20 Hz–20 kHz (+0/-1 dB); -3 dB points: 5 Hz and 50 kHz (LF filter bypassed, 8Ω)

• Damping Factor: > 300 at 8Ω (1 kHz and below)

• Input Sensitivity (at 8Ω): 1.23 V (+4.0 dBu)

• Voltage Gain: 50x (34 dB)

• Input Impedance: 10 kΩ unbalanced / 20 kΩ balanced

• Input Clipping: 10 Vrms (+22 dBu)

• Power Requirements: 100, 120, or 230 VAC, 50–60 Hz (factory configured). Typical draw (1/8 power pink noise at 4Ω): ~6.3 A; Severe (1/3 power): ~15.6 A. 120V models use standard NEMA 5-15 plug. 

• Cooling: Continuously variable-speed fan, back-to-front airflow

• Dimensions: 3.5” (88.9 mm) tall x 19” rack width x ~15.9–16” deep (2RU)

• Weight: Net ~44.5 lbs (20.2 kg); Shipping ~50.5 lbs (23 kg)