(!!!!!) (Best Mullard Single) GZ32 Mullard England branded ADZAM NOS "D" getter halo 1960 (60/40 and 60/40)
(!!!!!) (Best 12AX7 Holland Matched Quad) 12AX7=ECC83 Philips Holland NOS 1970-1971 (1.3/1.4ma x 4 tubes) (1-2% matched) (High Ma and Gm)
(!!!!!) (Best Brimar Pair) 12AX7=CV4004 BRIMAR BVA England NOS narrow ribbed plates NOS 1960's (1.1/1.4ma and 1.1/1.5ma)
(!!!!!) (Best Holland Pair) 12AX7=ECC83 Philips Holland NOS 1970-1971 (1.1/1.4ma and 1.2/1.3ma) (1-2% matched)
(!!!!!) (Best KT88 Gold Lion Single) KT88 Genalex Gold Lion England NOS circa 1960 in original box (155ma) (1 TUBE ONLY - NO PAIRS OR QUADS)
(!!!!!) (BEST RCA Quad) 6L6GC RCA black plates NOS 1960's (83.5/84.8/85/86ma) (Best Quad) (Recommended for Leben and Fender amps)
(!!!!!) (Best SIEMENS Matched Quad) ECC83=12AX7 Siemens Halske Germany NOS 1967 matched quad 1-2% matched (recommended for the best phono stages)
(!!!!!) (Best Sound - Matched Quad) 6L6GC RCA black plates NOS 1960's (78.0/78/78.5/80.4ma) (Excellent Quad) (Best in Leben and Fender amps)
(!!!!!) (BEST SOUND - Recommended Quad) 5687 GE "5-Star" NOS 1968 1-2% matched (Audio Note, Kondo, Modwright, Manley, Ayon)
(!!!!!) (Best Telefunken Pair) 12AT7 Telefunken Germany <> bottom NOS 1966 same date codes (7.8/9.2ma and 7.5/9.0ma) 1-3% matched
(!!!!!) (Best Value Pair) 12AU7=ECC82 Telefunken Germany <> bottom smooth plates NOS "Tektronix Checked" 1960's (10.0/10.5ma and 10.5/12.5ma) (low noise)
(!!!!!) (Recommended GE Quad) 6FQ7 GE NOS 1960's - 1970's same date codes (1 Quad) (CJ, Marantz, Stax)
(!!!!!) (Recommended Pair) 12AU7=ECC82 Brimar England NOS ribbed plates large "O" getter halo 1960-1961 (8.0/8.6ma and 8.0/8.6ma) 1-2% matched
(!!!!!) (Recommended Pair) 12AU7=ECC82 Brimar England NOS ribbed plates large "U" getter halo 1962-1963 (8.4/9.4ma and 8.8/9.3ma) 1-3% matched
(!!!!!) (Recommended Pair) 12AU7=ECC82 Brimar England NOS ribbed plates large "U" getter halo 1962-1963 (9.3/9.6ma and 9.6/10.2ma) 1-2% matched
(!!!!!) (Recommended Pair) 12AU7=ECC82 Telefunken Germany <> bottom smooth plates NOS "Tektronix Checked" 1960's (9.0/11.6ma and 9.3/11.0ma) 2% matched (low noise)
(!!!!!) (Recommended Pair) 5687 GE "5-Star" NOS 1968 1% matched (28.5/32.5ma and 29.0/32.5ma)
(!!!!!) (Recommended Pair) 5687 GE "5-Star" NOS 1968 1-2% matched (30.5/33.5ma and 31/34.5ma)
(!!!!!) (Recommended Quad - BEST Midrange) 6L6GC RCA black plates NOS mid-1960's (74.0/75.0/76.0/76.2ma) (very nice quad) (Best for Leben)
