Manufactured in Europe with Cryogenic Treatment in the USA
Pictured is the new TELEFUNKEN Black Diamond ECC83-TK tube, a modern version of the 12AX7, originally developed in 1947.
Nashville, TN, July 17-19, 2014 — TELEFUNKEN Elektroakustik of South Windsor, CT, is debuting its new line of Black Diamond Vacuum Tubes at Summer NAMM in Nashville. Original German made TELEFUNKEN vacuum tubes have been the benchmark of excellence in all audio applications, both production and reproduction, for many decades. Today, this rich history continues with the introduction of the new Black Diamond series.
Manufactured in partnership with JJ Tubes in Slovakia, each Black Diamond tube is meticulously measured for all critical parameters of performance including transconductance, gain, noise, and microphonics.
In addition to rigorous testing procedures, all new production TELEFUNKEN tubes are cryogenically treated to ensure durability, and subjected to an extended burn-in period to ensure superior stability. The tubes are re-measured subsequent to burn-in, and again before final packaging, in order to guarantee that only the best, lowest noise tubes are offered.
The cryogenic treatment process is done for a number of benefits, both sonically and constructional. Cryogenically treated vacuum tubes have a lowered noise floor, less microphonics, expanded dynamic range with more tonal depth, and a more consistent tone over a longer lifespan. In guitar amps, Black Diamond Series vacuum tubes have more harmonic content and improved saturation, which result in a richer tonal quality and deeper overdrive character.
All TELEFUNKEN branded tubes are hand picked to be the best examples of Eastern European construction in the proud tradition with which the name TELEFUNKEN Elektroakustik has become synonymous. To learn more about the full line of new tubes in the Black Diamond series visit: