Digital Power Amplifiers
TOA Digital Amplifier technology redefines the very concept of amplifiers
The power supply unit is the heart of the amplifier. To ensure consistently high performance and reliable operation, TOA engineers have given the DA Series a system that provides power independently to each of the four channels. This testifies to TOA's attitude to product development, which is always totally motivated by the desire to provide high-quality products that offer worry-free use. Never compromise — that's the TOA philosophy.

Design optimization for efficient and reliable high-level performance
The TOA DA-250F/FH, DA-250D/DH and DA-550F/500FH multi-channel power amplifiers offer a wider choice of power ratings, advanced Class D amplification circuitry, and a highly efficient AC mains to output power ratio, for the complete technological superiority it takes to support long-term installation applications. These energy-efficient, space-saving amplifiers are designed to combine high levels of performance and efficiency, and are well-suited to ensure sound reinforcement reliability in a wide range of venue types.

DA-500FH

DA-500 Digital Quad Ampifier

The DA-500FH is a 4-Channel Digital Power Amplifier designed for 100 V line high-impedance distribution and features lightweight, compact, high power output, and high efficiency. It delivers 500 W × 4 channels (20 Ω output) using a switching power supply.

DA-250F

DA-250F Digital Quad Amplifier

The DA-250F is a 4-Channel Digital Power Amplifier featuring lightweight, compact, high power output, and high efficiency. It delivers 250 W × 4 channels (4 Ω output) using a switching power supply. Each channel is equipped with an independent power section. It can be mounted in an EIA Standard equipment rack (1 unit size).

DA-250D

DA-250 Dual Digital Amplifier

The DA-250D is a 2-Channel Digital Power Amplifier featuring lightweight, compact, high power output, and high efficiency. Each channel is equipped with an independent power section. It can be mounted in an EIA Standard equipment rack (1 unit size).