The ICEpower AS Series consists of intelligent audio power conversion solutions designed particularly for highly competitive consumer and professional audio applications. The key distinguishing qualities of these modules are excellent audio performance, a wide array of features, flexibility and application convenience.

The 100AS1/2, 300AS1/A1, 700AS1/2 and 1200AS1/2 modules in the AS Series combine high performance class D amplifiers with a universal mains switch mode power supply with standby functionality, auxiliary power supplies, wake on signal sense, 5 V and 12 V triggers, status LED indicators and a DC-bus output for powering additional ICEpower 300A1 amplifiers. Basically, everything needed for a bass or guitar amplifier, a subwoofer, an active loudspeaker or a high-end amplifier.

The 300A1 module is essentially the amplifier part of the 300AS1. It is designed to be a “hanger” module, that can be powered from the DC-bus output of the 300AS1, 700AS1/2 or 1200AS1/2. This means that a combination of these modules can be used to create anything from a subwoofer to a stereo amplifier or a 2- or 3-way active loudspeaker. This is what we call design flexibility.

All the AS amplifier modules are based on patented ICEpower modulation and control techniques. This enables excellent audio performance and high efficiency in an ultra-compact and lightweight package.


The rich feature set and superb audio performance of the AS Series make the modules a perfect match for subwoofers, active loudspeakers and high-end consumer and professional audio applications. The typical applications include:

  • Subwoofers
  • High-end stereo and multi-channel amplifiers
  • Active 2- and 3- way speakers
  • Bass amplifiers
  • Guitar amplifiers
  • PA speakers and line arrays
See application overview on the illustration to the left

Feature Set Summary
100AS1/2 300AS1 300A1 700AS1/2 1200AS1/2
Universal Mains SMPS
(85 - 264VAC, 47Hz - 63Hz)
ErP (1275/2008/EC) compliant standby mode with less than 0.5W power consumption
+/-12V Regulated auxillary power supply DC output ✓ (+/-17V) ✓ (+/-12V) ✓ (+/-15V) ✓ (+/-15V)
+5V Regulated auxillary power supply DC output ✓ (+/-7V)
Auto-start or wake up on signal (signal sense)
DC-Bus output for powering additional amplifiers
Balanced input and output
Soft start-up and mute/de-mute
Comprehensive protection scheme (thermal, over-current, high-frequency, under-voltage)
Mechanically rugged construction (Tested for 70G shocks in six directions)
Pre-approved for Safety, EMC and RoHS compliance

Key Performance Parameters
100AS1/2 300AS1 300A1 700AS1/2 1200AS1/2
Output Power 1 % THD+N,
20 Hz - 20 kHz
100W (4Ω) 50W (8Ω) 300W (4Ω) 150W (8Ω) 300W (4Ω) 150W (8Ω) 700W (4Ω) 350W (8Ω) 1200W (4Ω) 600W (8Ω)
Output Power 10 % THD+N, 20 Hz - 20 kHz 135W (4Ω) 380W (4Ω) 380W (4Ω) 800W (4Ω) 1400W (4Ω)
Minimum load impedance 3Ω 2.5Ω 2.5Ω 2.5Ω 2.7Ω
Maximum amplifier efficiency - - 90 % - -
Maximum total amp+psu efficiency 72 % 80 % - 84 % 80 %
Supply voltage input 85-264 VAC 85-264 VAC 22-55 VDC 85-264 VAC 85-264 VAC
Peak output current 12A 20A 20A 30A 38A
Dynamic range 109dB 113dB 113dB 117dB 129dB
Output referenced idle noise (A-weighted) 77µV 75µV 75µV 70µV 25µV
THD+N 1W/1kHz 0.005% 0.006% 0.006% 0.006% 0.005%
Output impedance 200 mΩ 6 mΩ 6 mΩ 7 mΩ 5 mΩ