The LA15a is a compact, light weight four-channel power amplifier (2 rack units, 8.6 kg) providing 600 watts per channel into 4 ohms. Ideal for amplifying the high frequency section in multi-channel monitor systems or passive 2-way systems in distributed fixed installations, the LA15 can also be used to power active 2-and 3-way systems since it is possible to bridge connect one or two channel pairs and match the output power delivered into a variety of impedance loads using Minimum Load Select (MLS) switching.

The switch-mode power supply (SMPS) employed in the LA15a is a modern solution to the weight and size problem. With SMPS technology, it is possible to use ferrite transformers instead of the heavy iron transformers and large electrolytic capacitors that are typical of conventional power amplifiers. Combined with the heat dissipation efficiency of the patented IntercoolerÆ system, this results in a weight reduction of up to 60% when compared with conventional amplifiers of similar power ratings.