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AUDIO VALVES: ECC35 CV569 CV1985 CV3985 VT-229 6SL7GT 5691 TWIN TRIODE

The 6SL7GT is a medium impedance double triode with high gain. It featured separate cathodes and was designed for use as AF voltage amplifiers, phase splitters and where required as a cascade amplifier of very high gain. This Octal triode is favoured for many guitar and classic valve amplifiers, however, it is surprising which other well regarded and modern exotica also demands fine devices of this type:-

The wide glass tube envelope is 28 mm in diameter and, excluding the IO base pins, is 62 mm tall.

Alessandro Beagle
Almarro 318B
Ampeg Jet12 1960
Canary 300B 
Cary PH302 phono
EAR HP-4 headphone amplifier
Eddie Current Zana Deux 2007
Eddie Current Zana Deux preamp
Gibson GA-20 1950
Little-Dot mark VI

 

ECC35 6SL7GT 

ECC35

ECC35 

6SL7GT, BRIMAR, FAT BLACK BASE, ORANGE PRINT, CV569, CV1985, ECC35, VT-229, FOOTSCRAY MAY 1963 PRODUCTION 6SL7

6SL7GT, BRIMAR, FAT BLACK BASE, ORANGE PRINT, CV569, CV1985, ECC35, VT-229, FOOTSCRAY MAY 1963 PRODUCTION 6SL7
6SL7GT, BRIMAR, FAT BLACK BASE, ORANGE PRINT, CV569, CV1985, ECC35, VT-229, FOOTSCRAY, 6SL7

6SL7GT, BRIMAR, FAT BLACK BASE, ORANGE PRINT, CV569, CV1985, ECC35, VT-229, FOOTSCRAY, 6SL7
6SL7GT, BRIMAR, FAT BLACK BASE, ORANGE PRINT, CV569, CV1985, ECC35, VT-229, FOOTSCRAY, 6SL7

6SL7GT, BRIMAR, FAT BLACK BASE, ORANGE PRINT, CV569, CV1985, ECC35, VT-229, FOOTSCRAY, 6SL7
6SL7GT, BRIMAR, FAT BLACK BASE, SILVER PRINT, CV569, CV1985, ECC35, VT-229, FOOTSCRAY, APRIL 1958 PRODUCTION 6SL7

6SL7GT, BRIMAR, FAT BLACK BASE, SILVER PRINT, CV569, CV1985, ECC35, VT-229, FOOTSCRAY, APRIL 1958 PRODUCTION 6SL7
6SL7GT, GE, WHITE PRINT, CHROME ANODE, SCHENECTADY NY SEPTEMBER 1954 PRODUCTION 6SL7

6SL7GT, GE, WHITE PRINT, CHROME ANODE, SCHENECTADY NY SEPTEMBER 1954 PRODUCTION 6SL7
6SL7GT, GE, WHITE PRINT, GREY ANODE, KENTUCKY, JANUARY 1942 PRODUCTION, PRODUCTION 6SL7

6SL7GT, GE, WHITE PRINT, GREY ANODE, KENTUCKY, JANUARY 1942 PRODUCTION, PRODUCTION 6SL7
6SL7GT, MATCHED PAIR, SYLVANIA, VT-229, MILITARY, WHITE BASE PRINT, SAME FACTORY CODE, FEBRUARY 1944 PRODUCTION, 6SL7

6SL7GT, MATCHED PAIR, SYLVANIA, VT-229, MILITARY, WHITE BASE PRINT, SAME FACTORY CODE, FEBRUARY 1944 PRODUCTION, 6SL7
6SL7GT, MATCHED PAIR, SYLVANIA, VT-229, MILITARY, WHITE BASE PRINT, SAME FACTORY CODE, OCTOBER 1943 PRODUCTION, 6SL7

6SL7GT, MATCHED PAIR, SYLVANIA, VT-229, MILITARY, WHITE BASE PRINT, SAME FACTORY CODE, OCTOBER 1943 PRODUCTION, 6SL7
6SL7GT, RAYTHEON, ORANGE BASE PRINT, CHARCOAL ANODE, VT-229, NOVEMBER 1945 PRODUCTION, 6SL7

6SL7GT, RAYTHEON, ORANGE BASE PRINT, CHARCOAL ANODE, VT-229, NOVEMBER 1945 PRODUCTION, 6SL7
6SL7GT, SYLVANIA, VT-229, MILITARY, WHITE BASE PRINT, T SHAPE 3 HOLE ANODE, 1944 PRODUCTION 6SL7

6SL7GT, SYLVANIA, VT-229, MILITARY, WHITE BASE PRINT, T SHAPE 3 HOLE ANODE, 1944 PRODUCTION 6SL7
CV1985, BRIMAR, FOOTSCRAY, MIL SPEC 6SL7GT, BROWN MICANOL BASE, WHITE MILITARY CARTOUCHE WITH DATE CODE FOR DECEMBER 1954, ECC35, VT-229, 6SL7

CV1985, BRIMAR, FOOTSCRAY, MIL SPEC 6SL7GT, BROWN MICANOL BASE, WHITE MILITARY CARTOUCHE WITH DATE CODE FOR DECEMBER 1954, ECC35, VT-229, 6SL7
CV1985, BRIMAR, FOOTSCRAY, MIL SPEC 6Sl7GT, BROWN MICANOL BASE, WHITE MILITARY CARTOUCHE WITH DATE CODE FOR DECEMBER 1956, ECC32, 6SL7

CV1985, BRIMAR, FOOTSCRAY, MIL SPEC 6Sl7GT, BROWN MICANOL BASE, WHITE MILITARY CARTOUCHE WITH DATE CODE FOR DECEMBER 1956, ECC32, 6SL7
CV1985, BRIMAR, FOOTSCRAY, MIL SPEC 6SL7GT, BROWN MICANOL BASE, WHITE MILITARY CARTOUCHE WITH DATE CODE FOR DECEMBER 1956, ECC32, 6SL7

CV1985, BRIMAR, FOOTSCRAY, MIL SPEC 6SL7GT, BROWN MICANOL BASE, WHITE MILITARY CARTOUCHE WITH DATE CODE FOR DECEMBER 1956, ECC32, 6SL7
CV1985, BRIMAR, FOOTSCRAY, MIL SPEC 6SL7GT, BROWN MICANOL BASE, WHITE MILITARY CARTOUCHE WITH DATE CODE FOR NOVEMBER 1954, ECC35, VT-229, 6SL7

CV1985, BRIMAR, FOOTSCRAY, MIL SPEC 6SL7GT, BROWN MICANOL BASE, WHITE MILITARY CARTOUCHE WITH DATE CODE FOR NOVEMBER 1954, ECC35, VT-229, 6SL7
CV1985, BRIMAR, FOOTSCRAY, MIL SPEC 6SL7GT, MATCHED PAIR, BROWN MICANOL BASE, SAME WHITE MILITARY CARTOUCHE WITH DATE CODE FOR MAY 1960, ECC35, VT-229, 6SL7

CV1985, BRIMAR, FOOTSCRAY, MIL SPEC 6SL7GT, MATCHED PAIR, BROWN MICANOL BASE, SAME WHITE MILITARY CARTOUCHE WITH DATE CODE FOR MAY 1960, ECC35, VT-229, 6SL7
CV1985, BRIMAR, MIL SPEC 6SL7GT, , FAT BLACK BASE, ORANGE PRINT, ECC35, VT-229, FOOTSCRAY , MARCH 1952 PRODUCTION 6SL7

CV1985, BRIMAR, MIL SPEC 6SL7GT, , FAT BLACK BASE, ORANGE PRINT, ECC35, VT-229, FOOTSCRAY , MARCH 1952 PRODUCTION 6SL7
ECC35, MULLARD, CLEAR GLASS, BLACK BASE,

ECC35, MULLARD, CLEAR GLASS, BLACK BASE,