Switch Mode Power Supplies for Audio


Even the best-sounding amplifier can seem lacking without a rock-solid power supply behind it. A sturdy power supply is the basis of any quality audio system. Without sustainable power, even the best-sounding output sections can sound dull and weak.

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Sustainable Power for Audio

Music is a dynamic signal, and this means the output power is usually low compared to the highest transients (typically 1/8th in uncompressed music). But since our power supplies should also be capable of powering bass guitar amps or subwoofers, they need to be able to handle much higher continuous power. Therefore, we always aim to be able to deliver half power continuously.

As a result, ICEpower’s switch mode power supplies are perfect for enabling your high-efficiency amplifier needs. Our power supplies can be combined with ICEpower’s amplifiers, such as the 300A2, 400A2, Engine400, or ICEmatch modules. Or they can be used together with an output section of your own design. The potential applications are wide and include traditional Hi-Fi amplifiers, multichannel home theater, whole home audio, commercial audio, studio monitors, subwoofers, PA speakers, sound reinforcement, and even non-audio applications.

Our power supplies include a main converter as well as an auxiliary power converter, typically both +5V for powering digital circuitry as well as +/- 12 – 15Vdc for analog circuitry.

All our power supplies are pre-approved to the latest safety and EMC standards in order to simplify your product development process, and most also comply with the ErP and Energy Star requirements for low standby power mode. 

Reliability is a key focus for us. This has been achieved through careful design, the use of brand-name components, and meticulous testing and burn-in in mass production. Every single module goes through a comprehensive functional test in production before delivery to the customer. Furthermore, all our power supplies incorporate comprehensive protection features, such as thermal monitoring, over-current protection, over/under voltage protection, etc., to protect against failure in use.

Compare our Power Supplies for Audio






Universal Mains (85-264 VAC, 47Hz – 63Hz) X x X
ErP (1275 / 2008 / EC) compliant standby mode X (+5V) X (+5V) (Disable mode)
Regulated auxillary power supply DC output X (+/-12V) X (+/-12V) X (+/-7V)
Regulated auxillary power supply DC output X (+/-5V) X (+/-5V) X (+9V)
Wake up on signal/triggers X
Comprehensive protection scheme (thermal, over-current) X x X
Mechanically rugged construction X x X
EMC, UL and RoHS compliance X x X
Temperature monitor output X X
Key Performance Parameters
Power Output 400 W 1000W 1500 W
Peak Power 800W 1400W 2400 W
Maximum Efficiency 91% 92%
Supply voltage input 85-264 VAC 90-264 VAC 85-264 VAC
Main rail voltage ±33V ±69 V ±47 V, ±57 V or ±69 V
Digital/control auxillary supply voltage +5 V +5 V +9 V
Digital/control auxillary supply current 1A 1A 6A
Analog auxillary supply voltage +/-12V and +/- 5V and 5V standby +/-12V and +/- 5V and 5V standby :+/-7V
Analog auxillary supply current 12V: 700mA/ 5V standby: 1 A/ +-5V: 500mA 12V: 500mA/ 5V standby: 1 A/ +-5V: 200mA 1250mA+900mA
Vdrive supply voltage VS + 12V VS + 16V VS + 12V
Vdrive supply current 750mA 400mA 850mA

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