Touted as one of the most musical CCa (E88CC/6922) tubes on the planet, the Siemens are getting rarer every year with some NOS tubes selling for thousands if not hundreds of dollars for a pair. The CCa is essentially an uprated version of the E88CC/6922 tubes. This pair you see here are Made in West Germany with gold pins. They tested out strong and will provide many hours of musical bliss.
