High quality, sturdy Russian construction and great tone! Modeled after the Phillips STR power tube of the 50s and 60s. Full rich tone, very musical. They are fully computer tested using the Roetest professional system and the famous TV-7D/U. Pairs, quads and sextets are tightly matched using the latest Maxi-Matcher 2 professional matching equipment.
CALIFORNIA PROPOSITION 65 WARNING
WARNING:Cancer and Reproductive Harm-www.P65Warnings.ca.gov.