RADAR is a price search engine. We link to the original listing — we never sell direct. Transactions happen on the source site.
This Niles SI-275 (often mislabeled as a 275 Integrated) is a solid, well-built multi-room power amp known for clean 75W/channel output, though it lacks integrated features like a DAC or tone controls. At US$150, the asking price sits just above the median of US$144 from 66 recent USD listings, placing it squarely in the fair market range between the 25th percentile (US$92) and 75th percentile (US$200). This is not a bargain, but it is a reasonable price for a tested unit in unknown condition.
The SI-275 earns respect for its reliable performance in distributed audio setups and robust construction, making it a worthwhile buy for buyers needing a dedicated 2-channel amp at this price point. Since the listing doesn’t confirm condition or included accessories, the fair price is justified only if the unit is truly working and clean. If it’s original-owner and tested, it’s a solid opportunity; if there’s unknown wear or missing cables, the value drops toward the US$92 floor.
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.
See all Niles Audio listings on RADAR.
