Polk Audio SDA 1A

Sold or Listed Prices

17 market transactions via web search — not HiFi Registry sales.

Understanding the market

Half of recorded transactions fall between $350 and $450. The full observed range is unusually wide — the highest recorded price is 4.0× the lowest. A spread that wide usually means the recorded sales are not strictly comparable: different configurations or finishes, units sold for parts or with cosmetic damage, or listings where the model name is shared across more than one variant. Treat the middle range as the useful signal and the extremes as outliers worth investigating before you price against them.

What buyers should know

Confirm the centre matches the timbre of the main speakers in the same line; a mismatched centre is the most common cause of poor dialogue integration. Check driver surrounds as you would any speaker.

This range reflects 17 recorded sales, compiled from publicly listed and completed sales elsewhere on the used market, not from HiFi Registry transactions. That is a large enough sample to price against with reasonable confidence, though condition and provenance still move individual units.