Advent Model 400 FM Receiver (Mono, with Speaker)
A solid-state mono FM table radio with integrated 8-ohm acoustic suspension speaker, circa mid-1970s.
Overview
The Advent Model 400 FM Receiver (Mono, with Speaker) is a compact, self-contained FM radio system combining tuner and speaker in a single tabletop unit. Marketed as the "Advent Model 400 FM Receiver / Acoustic Suspension Speaker System," it was designed for simplicity and clean audio reproduction during the solid-state hi-fi era of the mid-1970s. The unit delivers monophonic sound through an internal speaker and features bass and treble tone controls for basic audio shaping. Its analog tuning scale provides traditional dial-based station selection.
Design
The Model 400 uses an 8-ohm acoustic suspension speaker system, a design principle championed by Advent for tight, controlled bass response. As a solid-state receiver, it reflects the transition from tube-based electronics to more reliable transistorized circuitry typical of the period. The unit’s form follows a functional, minimalist aesthetic consistent with 1970s consumer audio gear.
Market
Current market listings show variable pricing, with recent examples ranging from $24.97 to $100, averaging around $67.49 based on PicClick sales data. A Craigslist listing in Minneapolis priced one at $50, while an eBay listing noted a price point of $74.48 with installment options, suggesting modest collector interest. Some units have been modified, including at least one with Bluetooth integration, indicating niche appeal among vintage audio enthusiasts.
eBay Listings
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