(!!!) (Recommended Single) 5Z3G RCA NOS 1971 (56/40 and 58/40)
By Tube World
$ 39.99
5Z3G RCA NOS 1971 (DM) slightly tilted glass
56/40
58/40
5Z3=5U4G with UX-4 pin base (same specs)
- Korneff 45 SET
- Emotive Audio SIRA
See more: vacuum tube
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 (Recommended Single) 5Z3G RCA NOS 1971 (56/40 and 58/40)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/products/1_1b7fa94b-b6a9-4407-b8b0-be1632102fbf.jpg?v=1658269060){kind=link}
 (Recommended Single) 5Z3G RCA NOS 1971 (56/40 and 58/40) "Pin It")