This listing is for a high-performance pair of vintage Siemens E180F 6688 pentodes. These German-made valves feature the premium Triple Mica reinforcement and Grey Plate construction, ensuring excellent mechanical stability and low microphonics.

Both units have been laboratory-verified on the Amplitrex AT1000 digital tester. Using our Percentage Method, the test data demonstrates strong performance against the 100% factory design-center specifications (Ip = 13.0mA / Gm = 16500 µMhos).

NOTE : WE HAVE MORE THAN 100 PCS
Note: Custom Duties and Taxes are the Responsibility of the Buyer in their Country
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