Bose PowerShare PS404D 4-Channel 400W Power Amplifier
The Bose PowerShare PS404D is a 4-channel 400W smart power amplifier featuring patented PowerShare technology, built-in Dante networking and onboard DSP, delivering outstanding flexibility and performance for professional installed audio applications.
The Bose PowerShare PS404D brings the proven performance and reliability of the Bose Professional PowerMatch amplifier line to a new generation of installed audio systems. Inheriting patented technologies from one of the most respected amplifier ranges in professional audio, the PS404D combines intelligent power management, advanced DSP and seamless network integration into a compact 1RU chassis — making it one of the most versatile amplifiers available for commercial installation today.
Discover the Bose PowerShare Range In More Detail...
At the heart of the PS404D is Bose's patented PowerShare technology, which fundamentally changes the way amplifier power is allocated. Rather than dividing total power equally and permanently across four channels, the PS404D distributes its 400W asymmetrically across all outputs — allowing any individual output to draw full power when needed. This means system designers no longer need to size an amplifier based on the demands of the largest single zone, offering far greater flexibility during initial system design and invaluable freedom when making unplanned on-site changes that take advantage of surplus power.
Underpinning the PS404D's audio performance is Bose's Dual Feedback Loop system, inherited directly from the PowerMatch amplifier line. By continuously monitoring and controlling both the current and voltage delivered to each output load, this technology provides improved linearity and lower distortion whilst protecting connected loudspeakers — resulting in consistently excellent audio performance and long-term reliability.
Output flexibility is a further strength of the PS404D. Any channel can be independently configured for low-impedance (4–8Ω) or high-impedance (70V/100V) operation without bridging or using jumpers, making it straightforward to adapt the amplifier to a wide variety of application types within the same installation. Four analogue inputs are complemented by built-in Dante audio networking, supporting four digital input channels directly from a Dante network and allowing the amplifier to be positioned away from source locations and closer to loudspeakers for a cleaner, more flexible system design.
Onboard DSP via ControlSpace Designer software provides a comprehensive suite of processing tools including nine-band parametric EQ, matrix mixing, crossover filtering, limiting and delay, alongside access to Bose Professional certified loudspeaker presets. An auto-standby function can also be configured to reduce power consumption when no audio signal is present. The PS404D is a compelling choice for performing arts venues, places of worship, conference centres, restaurants, retail environments and hospitality venues of all sizes.
Bose PowerShare PS404D Key Features:
- Patented PowerShare Technology: Distributes 400W asymmetrically across all four outputs, allowing any individual output to deliver full power and offering unmatched flexibility for system design and on-site changes.
- Dual Feedback Loop System: Continuously monitors and controls current and voltage at each output for improved linearity, lower distortion and enhanced loudspeaker protection, inherited from the field-proven PowerMatch amplifier line.
- Load-Independent Outputs: Any channel can be independently configured for low-impedance (4–8Ω) or high-impedance (70V/100V) operation without bridging or jumpers.
- Built-In Dante Networking: Supports four digital audio input channels from a Dante network, with the ability to mix analogue and Dante inputs in ControlSpace Designer.
- Onboard DSP with Bose Professional Presets: Comprehensive processing including 9-band parametric EQ, matrix mixing, crossover, limiting and delay, all configurable via ControlSpace Designer software.
- ControlSpace Integration: Full integration with ControlSpace Designer for Ethernet-based configuration, end-user control and scheduling within larger networked audio systems.
- Auto-Standby Mode: Automatically enters low-power standby when audio signal falls below a set threshold and wakes when audio returns, reducing energy consumption.
- 4 Analogue Inputs: Four balanced line-level inputs via a single 12-pin Euroblock connector.
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Compact 1RU Design: Rack-mountable in a single rack space for neat, space-efficient installation.
Specifications:
BOSE Professional - High Quality Speakers, Amplifiers & AudioPack Pro Packages
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.
