Denon AH-D400

Name: Denon AH-D400
Brand: Denon

Average price

$172

Market sales

Price trend

Insufficient trend data

$50Avg $172$300

Typical range $100 – $225 · middle 50% of transactions

Based on 11 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
Dec 20, 2014	$50
May 19, 2014	$150
May 15, 2014	$100
Jun 10, 2014	$100
May 1, 2014	$150
Mar 12, 2014	$200
Mar 14, 2014	$165
Mar 1, 2014	$200
Feb 9, 2014	$250
Jul 18, 2013	$225
Jun 2, 2013	$300

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

Understanding the market

Half of recorded transactions fall between $100 and $225. 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

Earpads and headbands are consumables and often need replacement — check whether replacements are still available for the model. On planar and electrostatic designs, confirm the drivers are undamaged, since these are rarely economically repairable.

This range reflects 11 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.