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This is a strong deal at US$125, landing below the US$191 median and comfortably under the US$100–US$312 comparable range’s 25th-percentile boundary. Even allowing for the missing power cord, the price is attractive if the amplifier is confirmed working.
The 275X3 SE is a capable, high-current two-channel amp: roughly 75 watts per channel into 8 ohms, stable with difficult low-impedance loads, and equipped to run three speaker pairs—useful in distributed-audio systems. It also offers line-level outputs and Sonance’s switchable BBE processing. Budget for a suitable cord and verify both channels, speaker-selector operation, fuses, and any hum before buying; otherwise, this looks like a very worthwhile pickup.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Sonance is an American architectural audio brand founded in the early 1980s by Scott Struthers and Geoff Spencer in Southern California. The company emerged from a simple but powerful idea: that high‑fidelity sound should not compromise interior design. In 1982, Sonance introduced the world’s first in‑wall loudspeaker, effectively creating the architectural speaker category and establishing a legacy built on innovation and discretion.
Today, Sonance is best known for in‑wall and in‑ceiling loudspeakers, outdoor audio systems, and multi‑room audio solutions, rather than amplifiers, turntables, DACs, or headphones. Its product range includes residential and commercial speakers, volume controls, and related electronics designed to blend seamlessly into walls, ceilings, and outdoor environments. The brand’s “degrees of invisibility” philosophy emphasizes clean aesthetics, flexible installation, and consistent performance across diverse spaces, from luxury homes to commercial venues.
Sonance occupies a strong position in the mid‑to‑high‑end custom‑installation market, widely recognized and frequently awarded in architectural and outdoor audio. It is a go‑to choice for integrators, architects, and design‑conscious clients who prioritize both performance and visual subtlety, rather than visible hi‑fi hardware.
See all Sonance listings on RADAR.
