Are matched tubes used in Cary Audio Design components?
We are using carefully matched input tubes in our preamplifiers and power amplifiers in production. We match tubes by the internal physical construction of the tubes and by electrical specifications for gain or impedance, etc.. Some of them will have different labels on them from time to time but this is not a sign that we have made an error in production. Read on about our selection and tube matching during manufacture, please… Many New Old Stock (NOS) tubes are available that have a myriad of brand names on them. For US made vacuum tubes, the majority were actually made by either GE, Sylvania, Tung Sol or RCA. There were other US based makers (like Philips) but these brands were the largest makers in the types we typically use for input or driver section tubes. We use NOS American made 12BZ7, 12AX7 or 12AY7 tubes in our Rocket 88 R and V-12 R power amplifiers. Despite having many different labels on them, the majority of 12BZ7 that we see were made by either RCA or GE. You may find t
