Harman Kardon A‑310 AM/FM 12‑Tube Tuner (1956) – Rare Prototype - NOT WORKING
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Product details
| Management number | 37011615 | Release Date | 2026/01/11 | List Price | $39.00 | Model Number | 37011615 | ||
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| Category | |||||||||
Rare early prototype Harman Kardon A‑310 12‑tube AM/FM tuner (c.1956), built by Grommes‑Precision and derived from the Grommes GRT‑1. Unit does not pass RF/IF, likely due to IF transformer failure. Please watch the research video before buying: https://www.youtube.com/watch?v=381yunaSWns
Unit will NOT ship as shown in the video—cage, tubes, lamps, and power filter capacitors have been removed and are NOT included; ferrite antenna leads are cut. SOLD AS‑IS for parts or restoration only. Ideal for serious vintage audio enthusiasts, restorers, or historians.
OEM: Harman Kardon
Fabricator: Grommes‑Precision Electronics
Model: HK A‑310 early prototype
Based on: Grommes GRT‑1
Refer to Sams Set 310‑6 (Mar 1956, GRT‑1) and Set 333‑7 (Oct 1956, A‑310). User manual available on Harman Kardon’s site (search THEME A310).
| Category | Home > Artwork > Paintings |
|---|---|
| Size | N/A |
| Brand | Harman Kardon |
| Condition | Poor |
Paintings
Kansas City Royals
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