Advent 400 (1975)

The Advent 400 is a two-piece FM table radio. A tuner/amplifier unit pairs with a separate speaker, and both sit in molded cases. High-Fidelity (October 1975, p.64) introduced it as "Advent's FM Radio: More Than an FM Radio," reflecting the company's reputation for straightforward, performance-oriented audio design rather than gadgetry. The tuner front measures 4⅝ by 6⅜ inches, the speaker front 11 by 6⅜ inches, and both are 5⅛ inches deep plus clearance for the tuner controls. Price was $125, with a one-year parts-and-labor warranty.

The tuner-to-speaker cable was 43 feet in the test sample. Advent specified regular zip cord for longer runs. A later High-Fidelity piece (August 1976, p.31) described the 400 as a product that took straightforward design about as far as it could go, which fit Advent's house philosophy. Documentation on the Model 400 beyond these period notices is thin. It appears to have been a short-lived offering, positioned as an all-in-one FM solution from a company best known for its loudspeakers.