2x Mullard 12AX7S/CV4004 Valves This pair of 12AX7S/CV4004 are with very unique box-anode construction. They are believed manufactured by Mullard Mitcham factory Tested by AVO VCM Tester Valve 1 Ia1 = 0.7(mA), gm1 = 1.25(mA/V) Ia2 = 0.8(mA), gm2 = 1.3(mA/V) Valve 2 Ia1 = 0.78(mA), gm1 = 1.3(mA/V) Ia2 = 0.8(mA), gm2 = 1.35(mA/V) NOS specification: Ia = 1.2(mA), gm = 1.6(mA/V) *** This valve has also been tested in amplifier without any noise. *** Postage Costs I am happy to post this item to worldwide and combine postage cost on multiple purchases. 20230522L004

TESTS CONDITIONS (datasheet) DUOVAC RADIOELEC Va = 250V Vg=-2V Ia=1,2mA (Va=250V Vg=-1V Ia=3,2mA) HICKOK TV7D/U EV7-6080 B12 B min=32 (65%) EV2-1030 B12 B min=32 (65%) Please note that HICKOK is not a laboratory tester, though it is very well calibrated...HERE is how I calibrated mine following manual services specifications. I calibrated it to respect the low of the scale for filament... High voltage on filament would damage it...but gives higher values...0.6 (065-0.72) -->0.65V ; 1.1 (1.06-1.16) -->1.14V ; 1.5 (1.26-1.42) -->1.30V ; 2.0 (1.90-2.10) -->1.95V ; 2.5 (2.56-2.88) -->2.77V ; 3.0 (3.25-3.60) -->3.25V ; 4.3 (4.30-4.75) -->4.55V ; 5.0 (5.15-5.68) -->5.49V ; 6.3 (6.20-6.80) -->6.47V ; 7.5 (7.32-8.10) -->7.45V ; 10 (9.60-10.80) -->10.03V ; 12.6 (12.1-13.3) -->12.25V ; 20 (19.0-21.0) -->20.50V ; 25 (25.3-28.0) -->27.65V ; 35 (35.2-39.0) -->38.09V ; 50 (51.5-57.0) -->52.80V ; 75 (74.0-82.0) -->74.82V ; 117 (115-127) -->116.5VIf needed, i can share all other tests calibrations I get (129.5V/130V +o-3V ; 41.35V/40V +o-2V ; 4.21V/4V +o-1V ; 56.5V /56V....) FRS7506 5 RTC LARGE ARMS RING GETTER COPPER ANODES 1,5mA/1,4mA (3,4/3,4) 50/48 ! NEW OLD STOCK ! CHECK ALL THE LIST TO BUY OTHER REFERENCES AND COMBINE SHIPPING PLEASE CONTACT ME BEFORE BUYING TO CHECK THE BEST OPTION FOR THE SHIPPING COSTSTUBES ARE QUITE FRAGILE, SO YOU SHOULD PAY A BIT MORE FOR A SAFE PACKAGE THAN A BUBBLE LETTER. I DECLINE ANY RESPONSABILITIES IF YOU CHOOSE LETTER AND YOUR ITEMS ARE DAMAGED DURING TRANSPORT...

TESTS CONDITIONS (datasheet) DUOVAC RADIOELEC Va = 250V Vg=-2V Ia=1,2mA (Va=250V Vg=-1V Ia=3,2mA) HICKOK TV7D/U EV7-6080 B12 B min=32 (65%) EV2-1030 B12 B min=32 (65%) Please note that HICKOK is not a laboratory tester, though it is very well calibrated...HERE is how I calibrated mine following manual services specifications. I calibrated it to respect the low of the scale for filament... High voltage on filament would damage it...but gives higher values...0.6 (065-0.72) -->0.65V ; 1.1 (1.06-1.16) -->1.14V ; 1.5 (1.26-1.42) -->1.30V ; 2.0 (1.90-2.10) -->1.95V ; 2.5 (2.56-2.88) -->2.77V ; 3.0 (3.25-3.60) -->3.25V ; 4.3 (4.30-4.75) -->4.55V ; 5.0 (5.15-5.68) -->5.49V ; 6.3 (6.20-6.80) -->6.47V ; 7.5 (7.32-8.10) -->7.45V ; 10 (9.60-10.80) -->10.03V ; 12.6 (12.1-13.3) -->12.25V ; 20 (19.0-21.0) -->20.50V ; 25 (25.3-28.0) -->27.65V ; 35 (35.2-39.0) -->38.09V ; 50 (51.5-57.0) -->52.80V ; 75 (74.0-82.0) -->74.82V ; 117 (115-127) -->116.5VIf needed, i can share all other tests calibrations I get (129.5V/130V +o-3V ; 41.35V/40V +o-2V ; 4.21V/4V +o-1V ; 56.5V /56V....) FEM 7238 FF CIFTE 2 ARMS RING GETTER TRIPLE MICA SILVER SQUARE HOLE PLATES VERTICAL STAPPLES 1,0mA/1,0mA (2,8mA/2,7mA) 47/41 ! NEW OLD STOCK ! CHECK ALL THE LIST TO BUY OTHER REFERENCES AND COMBINE SHIPPING PLEASE CONTACT ME BEFORE BUYING TO CHECK THE BEST OPTION FOR THE SHIPPING COSTSTUBES ARE QUITE FRAGILE, SO YOU SHOULD PAY A BIT MORE FOR A SAFE PACKAGE THAN A BUBBLE LETTER. I DECLINE ANY RESPONSABILITIES IF YOU CHOOSE LETTER AND YOUR ITEMS ARE DAMAGED DURING TRANSPORT...

TESTS CONDITIONS (datasheet) DUOVAC RADIOELEC Va = 250V Vg=-2V Ia=1,2mA (Va=250V Vg=-1V Ia=3,2mA) HICKOK TV7D/U EV7-6080 B12 B min=32 (65%) EV2-1030 B12 B min=32 (65%) Please note that HICKOK is not a laboratory tester, though it is very well calibrated...HERE is how I calibrated mine following manual services specifications. I calibrated it to respect the low of the scale for filament... High voltage on filament would damage it...but gives higher values...0.6 (065-0.72) -->0.65V ; 1.1 (1.06-1.16) -->1.14V ; 1.5 (1.26-1.42) -->1.30V ; 2.0 (1.90-2.10) -->1.95V ; 2.5 (2.56-2.88) -->2.77V ; 3.0 (3.25-3.60) -->3.25V ; 4.3 (4.30-4.75) -->4.55V ; 5.0 (5.15-5.68) -->5.49V ; 6.3 (6.20-6.80) -->6.47V ; 7.5 (7.32-8.10) -->7.45V ; 10 (9.60-10.80) -->10.03V ; 12.6 (12.1-13.3) -->12.25V ; 20 (19.0-21.0) -->20.50V ; 25 (25.3-28.0) -->27.65V ; 35 (35.2-39.0) -->38.09V ; 50 (51.5-57.0) -->52.80V ; 75 (74.0-82.0) -->74.82V ; 117 (115-127) -->116.5VIf needed, i can share all other tests calibrations I get (129.5V/130V +o-3V ; 41.35V/40V +o-2V ; 4.21V/4V +o-1V ; 56.5V /56V....) 8332 RTC RING GETTER BOX RIBBED PLATES 1,4mA/1,5mA (3,4/3,5) 46/51 ! NEW OLD STOCK ! CHECK ALL THE LIST TO BUY OTHER REFERENCES AND COMBINE SHIPPING PLEASE CONTACT ME BEFORE BUYING TO CHECK THE BEST OPTION FOR THE SHIPPING COSTSTUBES ARE QUITE FRAGILE, SO YOU SHOULD PAY A BIT MORE FOR A SAFE PACKAGE THAN A BUBBLE LETTER. I DECLINE ANY RESPONSABILITIES IF YOU CHOOSE LETTER AND YOUR ITEMS ARE DAMAGED DURING TRANSPORT...

TESTS CONDITIONS (datasheet) DUOVAC RADIOELEC Va = 250V Vg=-2V Ia=1,2mA (Va=250V Vg=-1V Ia=3,2mA) HICKOK TV7D/U EV7-6080 B12 B min=32 (65%) EV2-1030 B12 B min=32 (65%) Please note that HICKOK is not a laboratory tester, though it is very well calibrated...HERE is how I calibrated mine following manual services specifications. I calibrated it to respect the low of the scale for filament... High voltage on filament would damage it...but gives higher values...0.6 (065-0.72) -->0.65V ; 1.1 (1.06-1.16) -->1.14V ; 1.5 (1.26-1.42) -->1.30V ; 2.0 (1.90-2.10) -->1.95V ; 2.5 (2.56-2.88) -->2.77V ; 3.0 (3.25-3.60) -->3.25V ; 4.3 (4.30-4.75) -->4.55V ; 5.0 (5.15-5.68) -->5.49V ; 6.3 (6.20-6.80) -->6.47V ; 7.5 (7.32-8.10) -->7.45V ; 10 (9.60-10.80) -->10.03V ; 12.6 (12.1-13.3) -->12.25V ; 20 (19.0-21.0) -->20.50V ; 25 (25.3-28.0) -->27.65V ; 35 (35.2-39.0) -->38.09V ; 50 (51.5-57.0) -->52.80V ; 75 (74.0-82.0) -->74.82V ; 117 (115-127) -->116.5VIf needed, i can share all other tests calibrations I get (129.5V/130V +o-3V ; 41.35V/40V +o-2V ; 4.21V/4V +o-1V ; 56.5V /56V....) FRS63023 RT 2 LARGE ARMS CLOSE RING GETTER COPPER ANODES 1,1mA/1,0mA (2,7mA/2,6mA) 45/44 ! NEW OLD STOCK ! CHECK ALL THE LIST TO BUY OTHER REFERENCES AND COMBINE SHIPPING PLEASE CONTACT ME BEFORE BUYING TO CHECK THE BEST OPTION FOR THE SHIPPING COSTSTUBES ARE QUITE FRAGILE, SO YOU SHOULD PAY A BIT MORE FOR A SAFE PACKAGE THAN A BUBBLE LETTER. I DECLINE ANY RESPONSABILITIES IF YOU CHOOSE LETTER AND YOUR ITEMS ARE DAMAGED DURING TRANSPORT...

Black Ice Audio Glass Tube FX DAC/DSD Wi-Fi, w/matched Shuguang Treasure 12AX7 tubes with less than 300 hours of use, very strong This DAC sounds Outstanding! Like new!

Tube NOS 12AX7S ECC83 RTC Box Plate. Mesures sur Metrix U61 1,57mA & 1,79mA/V et 1,27mA/V & 1,65mA/V

TUBE NOS RTC ECC83 12AX7S Box Plate. Mesures sur Metrix U61 1,55mA & 1,82mA/V et 1,3mA & 1,63mA/V

12AX7S RT RADIOTEHNIQUE FRANCE TUBES MATCHED PAIR 2 PCS NOS Two mica,0-geter,H59124 and 10 9 label dataEXTRA BALANCED AND MATCHED !!!tubes is for military applications,white boxThey are also tested for gas, short and leakageTESTED FOR NEUBERGER RPM370/1 Ua = 250v,Ug= -2V ,Ia=1.2mA=100% And Ia1= 1.2 / 1.1; Ia2= 1.2 / 1.2 mA

Matched balanced quad NOS new testing Sylvania 7025 lowest noise 12AX7s, test close and balanced on our calibrated Jackson 648A tester.Im afraid to wipe the dust off, but a damp cloth probably wouldnt hurt the paint.you can see Baldwin by Sylvania 12AX7s selling for much much more money. no shipping to Brazil, Italy, Greece, Russia, Turkey, Reunion, Samalia, Indonesia

12AX7S RT RADIOTEHNIQUE FRANCE TUBES MATCHED PAIR 2 PCS NOS Two mica,0-geter,H59124 and 10 9 label dataEXTRA BALANCED AND MATCHED !!!tubes is for military applications,white boxThey are also tested for gas, short and leakageTESTED FOR NEUBERGER RPM370/1 Ua = 250v,Ug= -2V ,Ia=1.2mA=100% And Ia1= 1.2 / 1.1; Ia2= 1.2 / 1.2 mA

Black Ice Audio Glass Tube FX DAC/DSD Wi-Fi, w/matched Shuguang Treasure 12AX7 tubes with less than 300 hours of use, very strong This DAC sounds Outstanding! Like new!

12AX7S RT RADIOTEHNIQUE FRANCE TUBES MATCHED PAIR 2 PCS NOS Two mica,0-geter,H59124 and 10 9 label dataEXTRA BALANCED AND MATCHED !!!tubes is for military applications,white boxThey are also tested for gas, short and leakageTESTED FOR NEUBERGER RPM370/1 Ua = 250v,Ug= -2V ,Ia=1.2mA=100% And Ia1= 1.2 / 1.1; Ia2= 1.2 / 1.2 mA

Black Ice Audio Glass Tube FX DAC/DSD Wi-Fi, w/matched Shuguang Treasure 12AX7 tubes with less than 300 hours of use, very strong This DAC sounds Outstanding! Like new!

Rca 12ax7s/ecc83 tube lot nos.

12AX7S RT RADIOTEHNIQUE FRANCE TUBES MATCHED PAIR 2 PCS NOS Two mica,0-geter,H59124 and 10 9 label dataEXTRA BALANCED AND MATCHED !!!tubes is for military applications,white boxThey are also tested for gas, short and leakageTESTED FOR NEUBERGER RPM370/1 Ua = 250v,Ug= -2V ,Ia=1.2mA=100% And Ia1= 1.2 / 1.1; Ia2= 1.2 / 1.2 mA