15 W/channel entry-level receiver, bottom of the 22xx line.
Solid-state: check autoformer/Power Guard boards and the original output devices; re-professional recap is expected at this age.
Marks that can be entered for this maker: Serial number, Model / catalogue number, British capacitor code (Hunts, Mullard), Japanese capacitor code (Nichicon, Chemi-Con, ELNA), EIA component code, Chassis / platter stamp, Version & era marker.
The introduction year is not documented, so the model narrows nothing.
Sold-listing reading: fair $192, good $192, excellent $192 USD · 1 sold listings (thin sample — indicative only) · as of 2013-01 – 2013-01. Only 1 sold listing(s) found in the eBay SOLD table (['2013-01-13'], https://classicreceivers.com/vintage-receiver-values — below the 3-observation threshold), so the price is an estimate/anchor, not a market average.
Evidence: AMK Products — Marantz production numbers · Marantz — official site