Heathkit AA-21

Name: Heathkit AA-21
Brand: Heathkit

Average price

$224

Market sales

Price trend

Insufficient trend data

$133Avg $224$399

Typical range $148 – $275 · middle 50% of transactions

Based on 8 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
Jan 10, 2025	$250
Nov 17, 2025	$250
Feb 13, 2022	$275
Jun 16, 2021	$133
Jun 4, 2021	$200
Jul 23, 2020	$148
Apr 26, 2014	$140
Apr 8, 2014	$399

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

Understanding the market

Half of recorded transactions fall between $148 and $275. The full range runs 3.0× 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 8 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.