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Are you looking for a capable, no-nonsense power amp rather than a collector piece? At US$125, this is a strong deal: it sits below the recent comparable 25th-percentile price of US$129, versus a US$138 median and US$149 75th percentile. For a tested, working example, that is bargain territory rather than merely fair pricing.
The ADM-2.1 is a useful two-channel amplifier, delivering roughly 100 watts per channel into 8 ohms, with plenty of headroom for typical speakers. Its 12V trigger and audio-sensing auto-on make it especially handy for a second zone or as an add-on to a receiver or preamp. Because the listing gives no condition detail, confirm both channels are quiet under load, check the input-level controls and trigger operation, and make sure the power cord is included. If it passes those checks, this is an easy buy at US$125.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Integra traces its roots to 1969, when Japanese audio pioneer Onkyo launched the brand to showcase its most prestigious electronics, emphasizing integration and fusion in high-performance systems. Evolving from a premium label under Onkyo, it became an independent division in 1999 or 2000, targeting custom installers with gear optimized for seamless home automation. Today, under the Premium Audio Company—recently acquired by Gentex—Integra maintains its Japanese heritage while expanding accessibility beyond specialist networks.
The brand specializes in premium AV receivers, processors, and home theater components, including multi-channel amplifiers like the DRX 5.4 with 120W power output per channel. Its lineup features CD, DVD, and Blu-ray players, all engineered for advanced integration via the proprietary Integra Serial Control Protocol (ISCP). Integra prioritizes expandability, multi-zone capabilities, and smart home compatibility over standalone speakers, turntables, DACs, headphones, or cables.
Positioned as a high-end choice for discerning custom integrators and home theater enthusiasts, Integra commands respect for its world-class build quality, innovative control features, and benchmark-setting performance. No longer confined to niche channels, it now appeals directly to knowledgeable buyers seeking robust, future-proof systems that rival the best in the industry.
See all Integra listings on RADAR.
