TT22 GEC
TT22 has a 12.6V filament
other than the filament voltage the TT22 has the same electrical specs as the TT21
 "Pin It")
&Category=&ImageURL=http://tubeworldexpress.com/cdn/shopifycloud/shopify/assets/no-image-2048-5e88c1b20e087fb7bbe9a3771824e743c244f437e4f8ba93bbf7b11b53f7824c.gif){kind=link}