ModWright Instruments SWL 9.0SE

Price trend

Sold or Listed Prices

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

Understanding the market

Half of recorded transactions fall between $1,389 and $1,567. The full range is tight — lowest to highest is only 2.0×, which suggests these units trade in a well-established band and condition moves price less than it does for many models.

What buyers should know

Check whether the unit uses tubes or solid-state gain, and if tubes, when they were last replaced. Confirm all inputs switch cleanly and the volume control is free of channel imbalance at low levels, which is the most common wear point.

This range reflects 12 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.