6SL7 TUBE FIVRE ITALY MATCHED PAIR STRONG SAME EMISSION FOR ALL TWO TUBES

PAIR  TUBES = 2 VINTAGE VACUUM TUBES = 2 VALVES = 2 PIECES = 2 PCS

OLD PRODUCTION 1940's
BLUE LABELS ON GLASS OLD STICKERS
OLDEST PRODUCTION BEST OF BEST IN SOUND

BLACK BASE
BADBOY FATBOY
SHORT BOTTLE
FAT SHAPE
BLACK ANODE
BLACK PLATES
FAT PLATE
THICK BROWN SOCKET
LARGE D  GETTER WELDED BOTTOM
STRONG EMISSION TESTED BALANCED
HOLED EDGES WELDED PLATES

TWIN TRIODE DOUBLE TRIODE TUBES FOR PRE AMPLIFIER
PREAMP DRIVER PRE PHONO INPUT FIRST STAGE 1ST STAGE AUDIO

6SL7GT = CV1984 = CV1985 = 6Н9С = 6SL7 = VT-229 = 6N9P
Similar tube Other shape (e.g. bulb type):   6SL7GTB ; 6Н9М
Sub tube:   6113 ; 6SL7_DDR
Other class quality (otherwise equal):   6SL7WGT ; 6SU7GTY
Heater different:   12SL7GT ; 5691 ; ECC35
Other  base:   7F7
First informations 02.Jul.1941 : Electron Tube Registration List
Sub the following models 6SC7   6SC7GT
Evolution 12AX7   7F7   6SL7GTB   6SL7WGT
Socket Octal (Int.Octal, IO) K8A
Filament Heater    Vf 6.3 Volt / If 0.3 Ampere / Indirect / Parallel / series ~ = AC/DC

Vintage NOS Tubes    Bendix Vintage NOS Tubes    Brimar Vintage NOS Tubes Sockets    Arcturus Vintage NOS Tubes    Rca 12ax7 Nos    NOS Nitrous Oxide Systems Parts for Ford Mustang,
RCA Vintage Tubes & Tubes Sockets    NOS Performance & Racing Parts    Genalex NOS Tubes    NOS Vintage Car and Truck Parts

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