The most sought-after output pentode Telefunken ever built, new-old-stock in its original Telefunken box - a tube made only in Ulm and virtually never seen surviving like this. If you are chasing the finest German power valve ever produced, this is it.
No direct equivalents confirmed.
The EL156 is a unique high-power pentode on the 10-pin Y10A steel base, produced only by Telefunken - it has no drop-in substitute. Glass-envelope compatible types were later made by other makers but differ in construction.
The EL156 is the flagship high-power output pentode of the Telefunken range, produced almost exclusively at the Ulm plant and regarded as one of the finest audio output valves ever made. It powered Telefunken's professional Ela studio and PA amplifiers and was so specialised that Siemens bought it unstamped from Telefunken to sell under its own name. Production ended in the early 1970s, and genuine NOS examples are now among the most prized and valuable tubes in existence.
If you know the EL156, you already know you need it. NOS and boxed - opportunities like this do not come twice.
SKU: multi laser data copy box