In 1959 Tung-Sol developed a premium, up-rated version of the 6BQ5/EL84 for use in industrial and military circuits. This tube was designated 7189. Due to its higher plate voltage rating and increased clean headroom, it became a favorite power tube for use in medium power stereo amplifiers and receivers made by H. H. Scott, Sherwood, Fisher, Lafayette, and many other hi-fi manufacturers. It was also used in high-end guitar amplifiers manufactured by Magnatone. Due to its increased ratings, it was considered as an upgrade for 6BQ5/EL84 amplifiers for increased performance and reliability.
The original 7189 tube production ceased in the early 1980s and vintage 7189 tubes have become expensive and hard to find. In order to allow these fine vintage 7189 amplifiers and receivers to continue be used, the Tung-Sol 7189 tube has been reissued. The 7189 Tung-Sol® reissue is built to the same specifications as the original 7189 Tung-Sol for the high fidelity and performance expected from the vintage 7189 amplifiers and receivers produced in the 1960s and 1970s.
The Tung-Sol 7189 / EL84M stands out as one of the premier new-production EL84 tubes currently available on the market. From a design perspective, it shares a striking resemblance to the 6P14P-ER, featuring the same robust grid fins designed for superior heat dissipation. While many modern tubes struggle under pressure, this reissue stays true to 7189 specifications; I personally tested its limits at 400 volts and found no evidence of red plating, confirming its impressive durability.
In terms of sonic performance, it mirrors the characteristics of its Soviet predecessor. It is a remarkably transparent tube that refuses to color the signal, allowing your preamp section to truly take center stage. It effectively “gets out of the way” of your tone while simultaneously providing a firm, articulate bass response and a silky, sweet top end. As the original 6P14P-ER becomes increasingly difficult to source, this Tung-Sol reissue serves as a top-tier, reliable alternative for any audiophile or guitarist.
Final Verdict: An essential upgrade for those needing high-voltage stability and transparent tone; the perfect modern successor to the legendary ER series.