We now present the completed ICEpower ASX2 Series, a trilogy of ICEpower modules that cover applications from 25W to 630W. The ASX2 are complete AC plug-to-speaker amplification audio solutions offering flexible two-channel or bridgeable speaker drive.

True to the ICEpower brand promise, the ASX2 Series sets a new industry benchmark in audio performance, efficiency and power density. This is made possible by adapting the very latest ICEpower technological advances.

The ASX2 modules are made to replace the traditional amplifier and power supply assemblies in a range of applications:

• Stereo and integrated amplifier solutions
• Active speakers and subwoofers
• Multi-channel home installation systems
• Multimedia audio products
• Audio systems in performance flat-panel TV
• Musical instruments and combo amplifiers
• Powered professional speakers and studio monitors

Small size
Big power

The ASX2 Series consists of three distinct product variants:

The mechanical outline features a uniform slim width combined with a uniform low profile building height. Power increases evenly by the module length.

The power density, which exceeds 20 Watts per cubic inch, combined with the unique geometries of the ASX2 Series, open up new innovation space for audio manufacturers.

The efficiency exceeds 90 percent in both amplifier and power supply sections, which secures cool operation and enhances product reliability. Combined with the low idle consumption, which is 5 to 10 times lower than in comparable Class AB amplifier assemblies, the ASX2 solutions are a responsible choice when caring for the environment.

Due to their extremely compact size, the ASX2 solutions are suitable for various product architectures, brining a new, exceptionally powerful experience to audio reproduction.

Audiophile Performance

Today, ICEpower® brand is associated with superior audio performance, accomplished through a range of successful applications by the most demanding audio brands in high-end consumer, automotive and professional markets.

The ASX2 Series is based on our 3rd generation technologies, which take ICEpower® audio performance to the next level. The advancements include extended bandwidth, improved dynamic range and exceptionally low distortion, achieved through our novel and proprietary HCOM amplifier topology.

The speaker drive unit is tightly controlled. Load invariance has been improved by high current output stages with an exceptionally low output impedance, which enhances the overall frequency response in all load situations.

Flexibility is paramount to the ASX2 Series. The three modules can be combined as application building blocks to generate a wide variety of 1-8 channel audio applications in consumer, semi-professional and multimedia audio products.

High current output stages, designed to comfortably drive any speaker load from 2Ω and up, significantly enhance product design flexibility for our customers.

ICEpower50ASX2 comes in two versions: one optimized for dual-channel single-ended output (SE), and the other one optimized for bridged (BTL) higher power single-channel operations. While the 125ASX2 and 250ASX2 modules can be configured at the customer’s production line for SE or BTL operations, thus improving the customer’s logistics.

With their unique features, the ICEpower ASX2 solutions serve as a flexible product development platform for audio manufacturers with versatile end-user products.

Application Convenience

Application convenience has been high on our priority list when developing the ASX2 Series. We have striven to make the solutions easy and convenient to implement, so that our customers can focus on design and audio quality of their own products.

ICEpower ASX2 Series conveniently complies with all relevant EMC and Safety standards, and full RoHS compliance is certified by compliance certificates. The modules in the ASX2 Series require no extra heat sinking or shielding due to the excellent efficiency and the carefully engineered EMC architecture.

The on-board ICEpower switch-mode power supply operates globally on nominal mains of 100-120V and 200-240V. A low-power DC auxiliary supply has been integrated in order for the external circuits to be powered from the ASX2 module.

These attributes combined, simplify module integration and cause significant size and weight reductions, compared to the traditional power supply and amplifier assemblies of equivalent power.

Typical electrical, mechanical and thermal limitations should no longer constrain creativity of audio manufacturers. Nor should application or approval difficulties in adapting the switching technologies.

	ICEpower50ASX2	ICEpower125ASX2	ICEpower250ASX2
Global AC input selection, 115V setting: 85-132V; 230V setting: 170-264V
Full 20kHz power bandwidth
Full 15kHz power bandwidth
Short circuit protection
Over-current protection
Thermal protection
Thermal protection monitoring
Over-current protection monitoring
Safety pre-approved
EMC pre-approved
RoHS compliant

Technology Breakthroughs

Several of ICEpower’s technology breakthroughs have been introduced in the ASX2 Series.

The ICEpower® Supply section includes the key innovation of the new Zero Voltage / Zero Current Switching SMPS topology with a fully integrated Adaptive Supply Pump Cancellation (ASPC). The result is the significantly improved quality of power supply; as well as virtual elimination of the well-known power supply pumping phenomenon, and of the need for large secondary buffering capacitors. This new technology has helped us to drive audio quality, efficiency, power density and the Watt/USD quotient up.

The ASX2 Series employs the third generation of ICEpower’s proprietary HCOM modulator topology, which in combination with the MECCⁱ feedback architecture enhances the critical performance parameters.

Audio Power Conversion Chain

The ASX2 is the first ICEpower product series to adapt ground-referenced SE amplifier output stages for increased flexibility, and to incorporate ICEpower® silicon ASIC integration of the Amplifier stage.

For further technical details, please download the ASX2 Series brochure, data sheets and product sheets on top of this page.

You are also welcome to order evaluation kits of the ASX2 modules.