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Matched NOS tubes 12AT7-ECC81 Telefunken, Mullard, Siemens, Sylvania, GE and more
SINGLE SELECTED ECC81 - 12AT7 HALTRON (by Siemens) NOS-NIB, Code VF1 # 1D, Balanced Triodes for Ip & Gm, 2 Ribbed Grey Plates, Ring O Getter, in Original Box (v118)(can be a triplet selected with the pair v116-v117)
note: Burned, Tested by Audiokit with TTA+ AVO VCM 163 + Matching Software developed by us
MATCHED SINGLE 12AT7WA - E81CC - M8162 ZaeriX Aero Services London Mullard Made NOS-NIB, code ?? R3 D?, COPPER Grids Posts, Balanced Triodes for Ip & Gm, Semibox Grey Plates, Ring O Getter halo, in Original Box (v120)
note: Burned, Tested by Audiokit with TTA+ AVO VCM 163 + Matching Software developed by us
SINGLE 12AT7WA - E81CC - M8162 ZaeriX Aero Services London Mullard Made NOS-NIB, COPPER Grids Posts, Semibox Grey Plates WITH SIDE HOLES, Ring O Getter halo, in Original Box (v130)
note: Burned, Tested by Audiokit with TTA+ AVO VCM 163
SINGLE 12AT7WA - E81CC - M8162 ZaeriX Aero Services London Mullard Made NOS-NIB, 63 R3C4, COPPER Grids Posts, Semibox Grey Plates WITH SIDE HOLES, Ring O Getter halo, in Original Box (v137)
note: Burned, Tested by Audiokit with TTA+ AVO VCM 163
MATCHED PAIR 12AT7WA - E81CC - M8162 ZaeriX Aero Services London Mullard Made NOS-NIB, Codes ? R3D2 and ?? R3D2, COPPER Grids Rods, Balanced Triodes for Ip & Gm, Semibox Grey Plates WITH SIDES HOLES, Ring O Getter halo, in Original Box (v197 - v206)
note: Burned, Tested by Audiokit with TTA+ AVO VCM 163 + Matching Software developed by us
MATCHED PAIR 12AT7WA - E81CC - M8162 ZaeriX Aero Services London Mullard Made NOS-NIB, COPPER Grids Rods, Balanced Triodes for Ip & Gm, Semibox Grey Plates WITH SIDES HOLES, Ring O Getter halo, in Original Box (v199 - v202)
note: Burned, Tested by Audiokit with TTA+ AVO VCM 163 + Matching Software developed by us
MATCHED PAIR 12AT7WA - E81CC - M8162 ZaeriX Aero Services London Mullard Made NOS-NIB, Codes ?? R ?? and ?? R3D2, COPPER Grids Rods, Balanced Triodes for Ip & Gm, Semibox Grey Plates WITH SIDES HOLES, Ring O Getter halo, in Original Box (v200 - v207)
note: Burned, Tested by Audiokit with TTA+ AVO VCM 163 + Matching Software developed by us
MATCHED PAIR 12AT7WA - E81CC - M8162 ZaeriX Aero Services London Mullard Made NOS-NIB, Codes ?? and ? R1 ? 2, COPPER Grids Rods, Balanced Triodes for Ip & Gm, Semibox Grey Plates, Ring O Getter halo, in Original Box (v182 - v191))
note: Burned, Tested by Audiokit with TTA+ AVO VCM 163 + Matching Software developed by us
MATCHED PAIR 12AT7WA - E81CC - M8162 ZaeriX Aero Services London Mullard Made NOS-NIB, Codes ? R1 ? 2 and ?? L3, COPPER Grids Rods, Balanced Triodes for Ip & Gm, Semibox Grey Plates, Ring O Getter halo, in Original Box (v185 - v187)
note: Burned, Tested by Audiokit with TTA+ AVO VCM 163 + Matching Software developed by us
MATCHED PAIR 12AT7WA - E81CC - M8162 ZaeriX Aero Services London Mullard Made NOS-NIB, Codes ? R1 ? 2 and ? R1 ? 2, COPPER Grids Rods, Balanced Triodes for Ip & Gm, Semibox Grey Plates, Ring O Getter halo, in Original Box (v190 - v193)
note: Burned, Tested by Audiokit with TTA+ AVO VCM 163 + Matching Software developed by us
MATCHED PAIR 12AT7WA - E81CC - M8162 ZaeriX Aero Services London Mullard Made NOS-NIB, Codes 65? R1 ? 2 and ??, COPPER Grids Rods, Balanced Triodes for Ip & Gm, Semibox Grey Plates, Ring O Getter halo, in Original Box (v179 - v189)
note: Burned, Tested by Audiokit with TTA+ AVO VCM 163 + Matching Software developed by us
SINGLE ULTRA-MATCHED E81CC - 12AT7WA SQ Gold Pin ADZAM (by Philips Germany Hamburg) SPECIAL SELECTION By Audiokit BALANCED TRIODES for Ip & Gm within 4% (on 4 measurements) code Df6 D4L3, 2 Ribbed Grey Plates, Ring O Getter, In Original Box (v113)
note: Burned, Tested, Selected by Audiokit with TTA+ AVO VCM 163 + AKi Matching Software
MATCHED SINGLE ECC81 - 12AT7 ADZAM (By Philips Suresnes Plant France RARE 60's year !) Balanced Triodes for Ip & Gm on 4 measurements, codes TTK2 F3C1, 2 Ribbed Grey Plates, Top O Ring Getter, in Original Box (v218)
note: Burned, Tested, Selected by Audiokit with TTA+ AVO VCM 163 + AKi Matching Software
MATCHED SINGLE ECC81 - 12AT7 ADZAM (By Siemens & Halske Munich) Balanced Triodes for Ip & Gm on 4 measurements, codes VF1 #6L, 2 Ribbed Grey Plates, Top O Ring Getter, in Original Box (v223)
note: Burned, Tested, Selected by Audiokit with TTA+ AVO VCM 163 + AKi Matching Software
ULTRA-MATCHED SINGLE 12AT7 - ECC81 SYLVANIA GTE INTL 1979 NOS-NIB USA, SPECIAL SELECTION By Audiokit BALANCED TRIODES for Ip & Gm within 3% on 4 measurements, code 76 E49, Smooth Grey Plates, Top O Ring Getter, in Original Box (v226)
note: Burned, Tested, Selected by Audiokit with TTA+ AVO VCM 163 + AKi Matching Software
MATCHED PAIR ECC81 - 12AT7 ADZAM (By Philips Suresnes Plant France RARE 60's year !) Balanced Triodes for Ip & Gm on 8 measurements, codes TK2 F3C2 e TK2 F4C5, 2 Ribbed Grey Plates, Top O Ring Getter, in Original Box (v219 - v221)
note: Burned, Tested, Selected by Audiokit with TTA+ AVO VCM 163 + AKi Matching Software
MATCHED PAIR ECC81 -12AT7 Telefunken Diamond <> Germany Berlin NOS-NIB, Balanced Triodes for Ip & Gm on 8 measurements, codes B5208904 top945 e B??20942 top 340, 1 Ribbed Grey Plates, Top O Getter, Reboxed in New TFK box (v231 - V234)
note: Burned, Tested, Selected by Audiokit with TTA+ AVO VCM 163 + AKi Matching Software
MATCHED PAIR 12AT7 - ECC81 SYLVANIA GTE INTL 1979 NOS-NIB USA, Balanced Triodes for Ip & Gm on 8 measurements, BOTH THE SAME CODE 76E52, Smooth Grey Plates, Top O Ring Getter, in Original Box Little Used but ion good condiction (v227 - v228)
note: Burned, Tested, Selected by Audiokit with TTA+ AVO VCM 163 + AKi Matching Software
MATCHED PAIR ECC81 - 12AT7 RFT Germany 60-70's year NOS, BALANCED TRIODES FOR Ip & Gm (on 8 measurements !) The Same Codes 202006, Smooth Grey Plates with 3 holes, Rugged structure with double reinforced lateral miche support for low microphonics, Ring O Getter, in White Box (v 209 - v214)
note: Burned, Tested, Selected by Audiokit with TTA+ AVO VCM 163 + AKi Matching Software
MATCHED PAIR ECC81 - 12AT7 RFT Germany 60-70's year NOS, BALANCED TRIODES FOR Ip & Gm (on 8 measurements !) The Same Codes 202006, Smooth Grey Plates with 3 holes, Rugged structure with double reinforced lateral miche support for low microphonics, Ring O Getter, in White Box (v 210 - v216)
note: Burned, Tested, Selected by Audiokit with TTA+ AVO VCM 163 + AKi Matching Software
MATCHED PAIR ECC81 - 12AT7 RFT Germany 60-70's year NOS, BALANCED TRIODES FOR Ip & Gm (on 8 measurements !) The Same Codes 202006, Smooth Grey Plates with 3 holes, Rugged structure with double reinforced lateral miche support for low microphonics, Ring O Getter, in White Box (v 211 - v217)
note: Burned, Tested, Selected by Audiokit with TTA+ AVO VCM 163 + AKi Matching Software
MATCHED SINGLE ECC81 - 12AT7 RFT Germany 60-70's year NOS, BALANCED TRIODES FOR Ip & Gm (on 8 measurements !) Code 202006, Smooth Grey Plates with 3 holes, Rugged structure with double reinforced lateral miche support for low microphonics, Ring O Getter, in White Box (v 215)
note: Burned, Tested, Selected by Audiokit with TTA+ AVO VCM 163 + AKi Matching Software