At Music Store Live we're all musicians like you, and we know how hard it can be to afford all the gear that you want and need.  We encourage you to make us an offer.  Often times, you'll be pleasantly surprised!   Additionally, don't hesitate to contact us regarding financing options.  We'll do everything we can to help get that next piece of gear into your hands.   Description RMXa Series The RMXa Series is an update on a proven line of amplifiers line of amplifiers combining legendary QSC reliability, audio performance and affordability. Entertainers and touring users can continue to rely on the RMXa as one of the leading amplifier series in the world. For mid-power applications, the 2RU models offer 4Ω power ratings from 300 to 800 watts per channel. For premium loudspeaker systems with extremely high power capacity the 3RU models (RMX 4050a and RMX 5050a) are unchallenged. The RMXa Series amplifiers from QSC offer true professional-quality performance at an affordable price. Rackspace and Comprehensive Features Three 2-rackspace models range in power from 430 to 1200 watts per channel at 2 ohms. Two 3-rackspace models provide 2000 to 2500 watts per channel at 2 ohms. All five models feature a compact chassis less than 16” deep. RMXa amplifiers include a comprehensive set of features including XLR and 1/4” balanced inputs, Speakon® and binding post outposts for convenient connectivity. User defeat-able clip limiters and selectable low-frequency filters optimize sonic performance. Sustained Power, Extraordinary Performance and Reliability QSC’s RMX 5050a power amplifier represents state-of-the-art in professional quality performance at an affordable price. Perfectly suited for a wide range of sound reinforcement applications including professional touring, performing musicians, and mobile entertainers, the RMX 5050a is optimized to deliver high levels of sustained power, extraordinary audio performance and road-proven reliability. The RMX 4050a is a “heavy duty” model designed to work as hard into 2 ohm loads as most competing amplifiers will at 4 ohms. Three-tier, Class H Design Both the RMX 5050a and RMX 4050a feature a three-tier, Class H design that is extremely efficient at real world power levels. Less AC current is wasted and more available current goes into producing useful audio power. 120 volt versions of the RMX4050a accomplish all this with a standard 15-amp plug.   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 defeat-able 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” (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   Specifications Power per Channel, Stereo Mode (both channels driven): 8Ω, FTC 20 Hz–20 kHz, 0.1% tdD: 450 W 8Ω, EIA 1 kHz, 0.1% tdD: 500 W 4Ω, FTC 20 Hz–20 kHz, 0.1% tdD: 650 W 4Ω, EIA 1 kHz, 0.1% tdD: 800 W 2Ω, FTC 20 Hz–20 kHz, 1% tdD: – 2Ω, EIA 1 kHz, 1% tdD: 1200 W Power, Bridge-Mono Mode: 8Ω, FTC 20 Hz–20 kHz, 0.1% tdD: 1300 W 8Ω, EIA 1 kHz, 0.1% tdD: 1500 W 4Ω, EIA 1 kHz, 1% tdD: 2400 W Signal to Noise (20 Hz–20 kHz): Distortion (SMPTE-IM): Input Sensitivity at 8Ω: Voltage Gain: Output Circuitry: Current Draw (120 V AC): Typical, 1/8 power pink noise at 4Ω*: 6.3 A Severe, 1/3 power pink noise at 4Ω*: 15.6 A AC Mains Plug: Weight: Net: 44.5 lb (20.2 kg) Shipping: 50.5 lb (23 kg) Distortion (typical): 20 Hz–20 kHz, 10 dB below rated power: < 0.03% tdD, 4Ω and 8Ω 1 kHz and below, full rated power: < 0.03% tdD, 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 (1 kHz and below): Input Impedance: 10 kΩ unbalanced; 20 kΩ balanced Input Stage Clipping: 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, thermal, 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 Dimensions: 5” (8.9 cm) tall; 2 rack spaces Power Requirements: 100, 120, 230 V AC (factory configured), 50–60 Hz     At Music Store Live, our goal is to revolutionize the way gear is bought online. It’s not just about videos and know how; it’s about the person on the other end of the line.  Whether you are in Tokyo or Toledo, we invite you to experience the reality of a living online music store and help us shape the best buying experience possible.  As you'll see in the video below, we're musicians just like you.  We strive to offer the best gear with the best online experience, and the best personalized service in the industry.  We strive to offer the best gear, the best online experience, and the best personalized service in the industry. At MusicStoreLive.com we are proud to offer free return shipping and a 30-day return policy in the 48 contiguous states on all new* items over $30. It's all part of our mission to bring the guitar shop to your living room. This policy allows you to get your gear hassle-free and try it with your own rig to be sure that it truly fits with your playing style and sound. If it doesn't work the way you had hoped we'll send you a prepaid return label and issue you a 100% store credit, once we get the item back in the same condition it was purchased. It's that simple. If you wish to return an item for a refund, we will ask that you cover the cost of return shipping. Please contact us for the return shipping address as well as return authorization number. Please allow 7-10 days from the receiving date for returns to be processed. Your order must ship to the billing address associated with your credit card, PayPal, or other method of payment (unless an alternate shipping address has been approved by an MSL Gear Specialist). If you want the shipment to be held at a shipping company hub it is your responsibility to make those arrangements directly with the shipping company. An indirect signature will be required upon delivery for all transactions over $750. If you would like to require a signature on a transaction of less than $750, please request it when you place your order. We do not insure packages valued under $3,000. If you would like to add insurance for delivery or return please request it when requesting your order or initiating your return. All returns are subject to a Tech Check upon arrival. Any instrument that is returned with damage, wear and tear (including pick marks), missing or replaced parts, missing protective or packing materials are not eligible for a full refund. *Used / Vintage / Clearance items carry our same return policy, except with a 3­ day return window. Please feel free to contact us for a specific quote on amplifiers and other items. Please Note: Some products are not available for international shipping.