dbx XB-140

Name: dbx XB-140
Brand: dbx

Average price

$61

Market sales

Price trend

Insufficient trend data

$25Avg $61$150

Typical range $35 – $85 · middle 50% of transactions

Based on 12 market transactions via web search — not HiFi Registry sales. HiFi Registry sales will accumulate as new listings sell on HiFi Registry.

Sold or Listed Prices

Date	Sold or Listed for
Mar 5, 2026	$150
Feb 18, 2021	$85
Feb 17, 2015	$90
Jan 26, 2015	$25
Oct 21, 2014	$65
Sep 27, 2014	$40
Aug 23, 2014	$75
Jul 24, 2014	$25
Jul 12, 2014	$35
Jun 15, 2014	$79
Apr 25, 2014	$25
Jun 2, 2013	$40

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

Understanding the market

Half of recorded transactions fall between $35 and $85. The full observed range is unusually wide — the highest recorded price is 6.0× 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

Powered subwoofers fail at the amplifier module far more often than at the driver. Ask whether the amp has been serviced or replaced, and confirm the unit powers up and passes low-frequency material without distress. Shipping weight makes these expensive to move.

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.