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Listing Comps / Threshold / 400A
Stereo Power Amplifier

Threshold 400A

Average price
$1,533
Market sales
7
Price trend
Insufficient trend data
$900Avg $1,533$2,288
Typical range $993 – $1,800 · middle 50% of transactions
Based on 7 market transactions via web search — not HiFi Registry sales. HiFi Registry sales will accumulate as new listings sell on HiFi Registry.

Price trend

Jan 25Jul 25Jan 26Jul 26

19 months of data shown — Listing Comps build richer history as transactions accumulate.

Sold or Listed Prices

DateSold or Listed for
Oct 18, 2025$900
Aug 18, 2025$993
Nov 8, 2025$1,600
Jul 19, 2025$1,800
Mar 14, 2025$1,675
Oct 31, 2024$1,475
Mar 23, 2025$2,288

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

Understanding the market

Half of recorded transactions fall between $993 and $1,800. The full range runs 2.5× from lowest to highest, which is normal for used equipment where condition, included accessories, and service history vary between units.

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 7 recorded sales, compiled from publicly listed and completed sales elsewhere on the used market, not from HiFi Registry transactions. That is enough to establish a working range, but not enough to be precise — treat it as a guide rather than an appraisal.

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Threshold 400A used price — $1,533 average | HiFi Registry