




See Options
2 Year
$219.99
3 Year
$349.99
5 Year
$689.99
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Review Summary
Accidents happen. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failures, and more.
If we can’t fix it, we’ll replace it at no additional cost.
Protect your product from drops, spills, and more.
Enjoy your gear without fear. We have you covered!
When regular use of your product over time results in mechanical or electrical failure.
We will never charge you a deductible after the purchase of a plan.
Our claims process is simple & easy and our customer service team is happy to help.
Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for international or U.S. territories purchases. Plans on open box items do not cover pre-existing damage.
Adorama Protect plans are available for ABS clients. If you have any questions or require assistanse, please call 800-223-2500
Browse our FAQ
50V/us
Option: 41dB, 38dB, 35dB, 32dB
0.01% (10% rated output power)
0.01% (10% rated output power)
0.01% (10% rated output power)
>80Db (less than rated power, 20Hz - 1kHz)
0.2dB (10% rated output power, 8ohm, 20Hz - 20kHz)
20k ohm (bal), 10k ohm (unbal)
5000 (8ohm, 20Hz - 200Hz)
>105-112dB (A weighted, 20Hz-20kHz)
90-260VAC, 50/60Hz
low voltage/overoad/thermal/DC output protection
8ohms Stereo: 2x2000 watts
4ohms Stereo: 2x3400 watts
2ohms Stereo: 2x4760 watts
16ohm Bridged: 4000 watts
8ohm Bridged: 6800 watts
4ohm Bridged: 9520 watts
19 x 1.7 x 18" (483 x 44 x 462mm)
22-26.4 lbs (10-12kg)
5060255344224
It is with great precision that the QX2-4000 2x 3400W at 4 Ohms High Performance 1U Digital Power Amplifier delivers an exceptional audio amplification experience. Engineered for high-performance and professional audio environments, this powerful amplifier boasts an impressive 2000 watts per channel at 8 ohms, making it an ideal choice for large venues and demanding audio applications.
Crafted by the renowned StudioMaster, a brand synonymous with high-quality sound, the QX2-4000 ensures a reliable and durable solution for amplifying audio signals. Its advanced amplifier adjustment technology is meticulously designed to achieve over 95% efficiency, ensuring stable performance even under high current, low impedance conditions.
The amplifier is equipped with active power factor correction (PFC) and an ultra-reliable soft power switching power supply, which operates universally between 90-250VAC, providing versatility and ease of use across various setups. The sleek 1U height design is not only space-efficient but also lightweight, tipping the scales at less than 12kg, which enhances its portability without compromising on power.
Available in both 2 and 4 channel versions, the QX series offers a range of power ratings, catering to diverse audio requirements. With the QX2-4000, you can expect power ratings from 2550 watts per channel up to 5100 watts per channel at 4 ohms, accommodating even the most power-hungry speakers and ensuring crisp, clear, and well-balanced sound.
Whether for live sound reinforcement, recording studios, or professional sound systems, the QX2-4000 2x 3400W at 4 Ohms High Performance 1U Digital Power Amplifier stands out as a robust and high-fidelity choice for audio professionals seeking a powerful, professional-grade amplification solution.