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This is a strong deal at US$89. It sits below the US$98 25th-percentile mark and well under the US$150 median from 156 comparable listings, making it a genuine bargain rather than merely a fair ask.
The SI-245 is a practical, high-current Class AB amplifier: 45 watts per channel into 8 ohms and 70 watts into 4 ohms, with enough stability for distributed audio or demanding second-zone duties. Its clean, fairly neutral presentation and useful music-sense, trigger, and manual turn-on options add real flexibility. At this price, “works great” is the key reassurance; just confirm both channels, turn-on behavior, and the RCA inputs operate cleanly before buying.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Niles Audio traces its origins to 1978, when it launched in Miami, Florida, as a pioneer in switching systems for audio retailers. From these humble beginnings, the company evolved into a cornerstone of custom home audio, earning its stripes as a founding member of CEDIA and building a legacy of installer-focused innovation over four decades. Acquired by Linear LLC in recent years, Niles continues to uphold its heritage while expanding under new ownership.
The brand specializes in comprehensive whole-home audio solutions, offering over 500 products that span architectural speakers, amplifiers, receivers, automation controls, and accessories for seamless integration. Its portfolio emphasizes multi-room distribution, home theater systems, outdoor landscape audio, and cutting-edge options like the nearly invisible Cynema Soundfield in-wall soundbar, all designed for custom integrators to deliver professional-grade performance across indoor and outdoor spaces.
Niles holds a strong mid-to-high-end position in the custom installation market, renowned among savvy homeowners and professionals for reliable, high-quality distributed audio that blends effortlessly into modern living. Far from a vintage collector's niche, it remains a go-to for discerning buyers seeking robust, integrator-friendly systems that prioritize exceptional entertainment without compromise.
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