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Tube Maze
Guides and reviews of vacuum tubes and tube equipment
The Tung-Sol 5687 Horse Shoe getter is a frequent topic of conversation among devotees of the 5687 tube family. While only a select number of amplifiers are designed to utilize this specific valve, those that do truly excel. This tube possesses incredible transconductance for its compact size, making it an ideal driver for powerful triodes and pentodes.
From a sonic perspective, the Tung-Sol offers a deeply captivating experience. The bass is both strong and tight, avoiding any hint of muddiness. While the top-end extension may not reach the levels of a GE 5687, it is notably sweeter and more forgiving. However, the true “magic” of this Tung-Sol variant is found in the midrange; vocals are rendered with luscious, clear, and relaxed textures that eliminate any sense of auditory strain. When you combine this with its excellent linearity and low noise floor, you have a nearly perfect component.
The primary caveat for prospective buyers is that many Tung-Sol 5687 units are prone to microphonics. It is essential to exercise caution during the purchasing process. To ensure you receive a high-performing “gem,” always verify that the seller accepts returns and—most importantly—tests their stock in an actual audio circuit rather than relying solely on a standard tube tester. This tube is RECOMMENDED.