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Against 158 recent comparable listings, the US$116 ask is a strong deal: it sits below the US$150 median and comfortably below the US$98 25th-percentile threshold, just above that bargain cutoff. For a tested-working example, this is sensible money rather than an optimistic ask.
The SI-275 is a sturdy, high-current Class A/B amplifier delivering 75 watts per channel into 8 ohms and 100 watts into 4 ohms, with useful music-sense, trigger, and manual turn-on options. Its discrete build, separate channel supplies, protection circuitry, and easy drive of tougher speakers make it especially appealing for multiroom or straightforward stereo duty. Since “tested working” is encouraging, confirm both channels are quiet, the turn-on modes behave properly, and the binding posts and detachable power cord are present. At US$116, those are practical checks—not reasons to pass.
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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