The amplifiers displayed on this page are from various American manufacturers who, during the 'golden era' of hi-fi, were either small firms that operated for only a short period of time or larger diverse manufacturers that produced only a few high fidelity products. Since limited information is available about these interesting amplifiers and rather than ignore them altogether, they have been conveniently combined onto this single page. Although corporate histories have been foregone on these marques, company backgrounds (where available) have been included on the individual amplifier pages.