ADM-2.1

About the ADM-2.1

The Integra ADM-2.1 stereo power amplifier by Onkyo Integra offers 100 watts per channel into 8 ohms with 0.08% total harmonic distortion, utilizing WRAT (Wide Range Amplifier Technology) with discrete output transistors and high-quality Nichicon Muse filter capacitors. It provides a wide frequency response from 10 Hz to 100 kHz (±1 dB), a high signal-to-noise ratio of 110 dB, and a damping factor of 100 for tight speaker control. The amplifier supports auto turn-on modes via audio sensing or 12 V trigger with selectable trigger input, and includes an input/output loop for chaining multiple amps in multi-room setups. Its robust protection circuitry guards against overload and short circuits. The unit is housed in a clean, minimalist 2U rack height chassis with sturdy metal construction and heat sink cooling, available in black or silver finishes. It is suitable as a main amplifier, second-zone powerhouse, or dedicated receiver substitute, offering professional-level amplification in a compact design.