RADAR is a price search engine. We link to the original listing — we never sell direct. Transactions happen on the source site.
Recent comparable listings put this model’s used asking-price median at US$198, with the middle 50% spanning US$101–US$320. At US$850, this example is dramatically above the 75th percentile and looks ambitious unless it is unusually complete, mint, and backed by meaningful warranty or installation value.
The amplifier itself is a serious 2U installation power amp: 500 watts per channel into 8 ohms, 750 watts into 4 ohms, DSP with speaker presets and parametric EQ, network control, and bridged operation up to 2,000 watts. That combination can be excellent for demanding architectural or whole-house systems, but it does not justify four-plus times the typical used ask on its own. Verify the exact MKIII version, input module, rack hardware, remote/control accessories, fan noise, DSP operation, and both-channel output before considering it; at this price, negotiation is essential.
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.
