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(1 set of 10 tubes) 448A Western Electric "TIPPED TOP" used/good 75-85% with "D" getter 1965-1966
(!!) 403A=6AK5 Western Electric used/good 1970 (8.2ma)
(!!!!) (Best Value Pair) JAN-7308 Raytheon NOS 1968 (15.2/10.4ma and 16.8/12.5ma)
UF89=12DA6 Telefunken made by Philip Italy NOS 1969-1970 (107/60)
7R7 Tungsol NOS 1947-1948 (52/38)
(Best 12AT7 Value) JAN-12AT7WC Philips by Sylvania black plates NOS 1981-1984 (3 in stock)
(!!) 13EM7 RCA black base black plates NOS 1968 (2.0ma/28ma)
(!!!!!) (Best Mullard Pair #2) 12AX7=ECC83 Mullard UK ribbed plates NOS 1969 same date codes (1.4/1.1ma and 1.3/1.2ma) 1-5% matched
(!!!!) (Best Overall Single) CV4004=12AX7 Mullard box plates NOS 1971-1972 (Gm=1600/1700) (1.3/1.5ma)
(!!) (Best Brimar Single) CV4024=12AT7WA=12AT7 Brimar UK NOS square black plates 1967 (10.2/11.4ma)
(!) (READ REVIEW) 75 Sylvania NOS 1952 (35/19)
(!!!!) (Good Value Pair) 6SN7GTB Sylvania chrome top used/good 1957 (7.4/8.5ma and 7.3/8.4ma) (Schiit Freya, Rogue, Modwright OPPO)
6AB8=ECL80 Amperex by Siemens Germany low hours/tests like new 1970 (67/35 and 32/20)
(!) (Recommended Single) 6N7GT Raytheon coated glass NOS 1940's (3.2/3.5ma)
(!!!!) (Best Pair #3) 5670W GE NOS 1986 (8.4/7.2ma and 8.0/7.4ma) (Same Gm) 1-2% matched
6688=E180F Philips Miniwatt Holland SQ gold pins used/good 1966 (8.8ma)
(!!) (Best Single) 13EM7 RCA coin-base black plates NOS 1970's (2.7/47.2ma)
(READ REVIEW) 12AX7 BRIMAR England shiney black ribbed plates "D" getter 1955 (rare)
(!!!!) (Best Single 1955 era) CV492=12AX7 BRIMAR BVA England NOS black ribbed plates "D" getter 1955 era (1.0/0.9ma) (rare)
24A Coronado ST-shape used/tests like new 1940's (45/25 and 4.1ma Gm=1100)
