NAD Model 505

Little is documented about the NAD 505, and even its identity carries a warning flag. The one source that names it — Audio-Database.com — lists it among NAD's "Philips series" integrated amplifiers at 50W+50W, placed alongside the 3020 (20W+20W), the 7155 (35W+35W), and the 7150 (85W+85W). But NAD's own history pages omit the 505 from their amplifier family tables entirely, listing only the 3020, 7020, 7120, 7150, and 7155. Whether the 505 was a genuine production amplifier, a regional variant, or a model numbered under a different scheme is unresolved in the record.

What is known, in short:

Listed by one source as a low-priced integrated amplifier — "NAD 505" at 50W+50W.
Grouped in that source's "Philips series" line-up alongside the 3020, 7155, and 7150.
No launch year, original price, full specifications, design details, or owner reviews survive in the archive's records. A 1993 issue of HiFI-Stereo (February 1993, p.5) lists the NAD Model 505 among equipment test reports, confirming its existence as a product.

Every fact above traces to that single source. No corroboration exists. If you own a 505 — or its manual, or a service sheet — the specifications and a confirmed product identity would be a genuine addition to this page.