JL Audio M400/4

Name: JL Audio M400/4
Brand: JL Audio

Average price

$298

Market sales

Price trend

Insufficient trend data

$230Avg $298$380

Typical range $250 – $320 · middle 50% of transactions

Based on 18 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 10, 2015	$300
Jan 22, 2015	$380
Dec 20, 2014	$249
Dec 23, 2014	$320
Nov 6, 2014	$300
Sep 13, 2014	$249
Sep 12, 2014	$370
Aug 30, 2014	$250
Aug 16, 2014	$300
Sep 13, 2014	$300
Jul 23, 2014	$320
Apr 20, 2014	$230
May 25, 2014	$300
May 25, 2014	$354
Apr 22, 2014	$249
Feb 16, 2014	$300
Apr 9, 2014	$320
Jun 2, 2013	$279

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

Understanding the market

Half of recorded transactions fall between $250 and $320. The full range is tight — lowest to highest is only 1.7×, 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

Ask when the unit was last serviced and whether the output devices are original. Bias and DC offset drift with age on solid-state amps. Confirm both channels have been tested under load, not just powered on.

This range reflects 18 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.