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US$115 is a strong deal, sitting well below the 25th percentile of US$98 for this model in the used market, with the median at US$148 and 75th percentile at US$209. This price represents genuine value for a well-specified integration amplifier.
The Niles SI-245 is a respected 2-channel stereo power amplifier delivering 45 watts per channel at 8 ohms, ideal for driving passive speakers in multi-room or dedicated audio setups. Its solid 28 dB voltage gain and 22K ohm input impedance make it versatile for system integration. At US$115 with free shipping, this listing offers excellent upside for enthusiasts seeking reliable, rack-mountable power without the premium of new gear. No caveats apply here—this is a clean buying opportunity.
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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