Studiomaster QX4-6000 4-Channel 1U Digital Power Amplifier (4 x 2550W @ 4 Ohms)
The Studiomaster QX4-6000 is an ultra high-power, four-channel digital power amplifier designed for large-scale professional audio systems, touring rigs, and demanding rental installations.
Extreme Power in a 1U Chassis
The QX4-6000 delivers an impressive 4 x 2550 watts into 4 ohms, all from a compact 1U rackmount enclosure weighing under 12kg. This exceptional power-to-weight ratio makes it ideal for high-output sound systems where space, efficiency, and portability are critical, such as line array systems, clubs, theatres, and large live venues. Advanced amplifier adjustment technology ensures over 95% efficiency, providing stable performance even at high current and low impedance loads.
Engineered for Professional System Design
Part of the flagship QX Series, the QX4-6000 is available alongside both 2-channel and 4-channel models, offering scalable solutions from fixed installations to touring systems. With support for stereo, parallel, and bridged operation, the amplifier provides complete flexibility when configuring multi-speaker systems, allowing installers and engineers to optimise power delivery for a wide range of loudspeaker layouts.
High-Efficiency Power Supply with Global Compatibility
The QX4-6000 features active power factor correction (PFC) and an ultra-reliable soft-switching power supply, capable of operating universally between 90–250VAC. This ensures consistent performance across global power conditions, making it suitable for international touring and rental use. The efficient design reduces heat generation and energy consumption, while maintaining high output levels under continuous operation.
Built for Reliability in Demanding Environments
Designed for professional use, the QX4-6000 incorporates comprehensive protection systems including thermal, overload, DC output, and low-voltage protection. Variable speed fan cooling maintains optimal operating temperatures, while thermal, fault, and limiter indicators provide clear system monitoring in real time. The internally modular design allows for fast servicing and long-term reliability in mission-critical audio applications.
Studiomaster QX4-6000 Key Features:
- Ultra high-power 4-channel digital amplifier: Delivers 4 x 2550W at 4 ohms
- Over 95% efficiency: Advanced digital amplification technology
- Active PFC with soft-switching PSU: Stable worldwide operation (90–250VAC)
- 1U lightweight design: Under 12kg for easy racking and transport
- Stable down to 2 ohms: Suitable for high-current speaker systems
- Stereo / Parallel / Bridged modes: Flexible system configuration
- Multiple gain settings: Selectable input sensitivity
- Output limiter: Protects connected loudspeakers
- Balanced XLR inputs: Professional signal connectivity
- Modular internal layout: Quick maintenance and servicing
- Variable speed fan cooling: Efficient thermal management
- Full protection suite: Thermal, overload, DC, and low voltage protection
- Status indicators: Thermal, fault, and limiter LEDs
Specifications:
View our shipping and delivery information below. All prices include VAT.
Important notice for non-UK orders: Any order being shipping outside of the UK will incur an import tax. See below for more information.
Cut-off Times
Orders must be placed before 3:30pm to guarantee same-day dispatch. Any orders placed after this time are not guaranteed to be shipped the same day, and are more likely to be shipped the next working day.
To guarantee Saturday Delivery, orders must ideally be placed before 2pm.
We operate during office hours, Mon-Fri, 9am - 5pm, and are closed during the weekend.
Orders placed over the weekend or Friday after cut-off will be processed and shipped the following Monday (or Tuesday during bank holidays).
Mainland UK Delivery Charges
Note: Next-day services are classed as working days (Mon-Fri) and do not include weekends. Please choose Saturday delivery if you require the item over the weekend.
Please also note orders with a high number of boxes may be subject to an additional charge.
All delivery options will be available at the checkout stage. Please ensure you add a mobile number to your order for tracking information.
Offshore & International
We ship to Scottish Highlands, Islands, Ireland and the EU. Please see the table below for base prices. Please note that these prices are subject to change based on the number of boxes.
The following postcodes fall under 'Highlands & Islands', and are subject to the above rates/lead time.
- Scottish Highlands: FK17-21, IV1-39, IV52-54, IV63, KW1-14, PA21-40 (excluding PA38), PH19-26, PH30-41, PH49-50
- Scottish Islands: HS1-9, IV40-51, IV55-56, KA27-28, KW15-17, PA20, PA38, PA41-49, PA60-78, PH42-44, ZE1-3
If a UK Mainland next-day service is selected at checkout, please be aware that it won't be sent on that service.
If you require a next-day service to Northern Ireland and the highlands, get in touch so we can assist further.
EU Import Tax
Any goods shipped outside of the UK, over a certain value, will incur an import tax. The cost and rate will depend on the country and the order value.
This is a legal requirement and MUST be paid prior to delivery in order to receive your goods. You will be contacted by the courier once the order is dispatched to pay the fee.
Failure to pay import tax when applicable will result in the order being shipped back to Audio Volt. Any returned goods sent back to us due to non-payment of import tax are NOT ELIGIBLE for a refund on the shipping charge.
You can obtain an import duty estimate here.
Delivery Notes
On delivery, you must inspect the goods carefully for damage as Audio Volt is unable to accept responsibility for damage in transit, shortage of delivery or loss of products unless the customer advises Audio Volt of such within three working days from the date of delivery.
60 Day Returns Policy
We ask that you follow these guidelines to help us process your return as quickly and efficiently as possible:
- Please keep your order reference to hand. This confirms your original order and gives us the necessary details to authorise the product's return.
- Contact our Customer Services Team on 02476 369890 (or email info@audiovolt.co.uk). We will then send you an RMA number and a returns form, which needs to be completed and sent back with the returned item(s).
- If the order has been unpacked, re-package it to ensure that it is being returned in its original condition. Please make sure all items relating to the product are returned, including manuals and cables.
- When returning an item, please obtain a proof of postage receipt from the courier.
Returned items must be mailed within 10 days of when the RMA number has been issued. Items received with a post date 30 days after your requested return will NOT be eligible for refund.
Please note: our returns policy is quite straightforward, but there are a number of conditions that we ask our customers to comply with before applying:
- It is your responsibility to request a return. If you don't tell us you want to make a return, we don't know. Once you do tell us, we will do everything we can to action it.
- If you have not requested a return within 60 days of receiving an order, we will assume that you are intending to keep it, and we will not authorise a return.
- We always refund the payment according to how the original purchase was made and aim to do so within 72 hours of the return being received by us.
- Returned goods are liable for a restocking fee of 15% towards handling and repackaging if the order is not returned in its original, unopened packaging. This charge will be subject to our inspection of the returned goods.
- Delivery charges will not be refunded unless the delivered goods are faulty.
- Replacement products are dispatched immediately after the returned goods have been received and accepted by Audio Volt.
- Items that develop a fault within 30 days of delivery are eligible for a replacement or a refund. Delivery costs are also reimbursed for faulty items. Please contact our Customer Services Team on 02476 369890 if you believe your item has developed a fault.
Finally, please remember that notifying us of your intention to apply for a return, saving the delivery paperwork and keeping the order in its original packaging will help both you and Audio Volt to process the return quickly.
Any Questions?
If you have any questions about our returns policy, please telephone us on 02476 369890 or email us at info@audiovolt.co.uk.
We operate during office hours, Mon-Fri, 9am - 5pm, and are closed during the weekend.
