5x TUNG-SOL ECC83 Valves Manufactured in 1963. Tested by AVO VCM Tester *** 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. 20220412L027

1x LORENZ/Holland ECC83 Valve Date Code: *** ?1G1 Rare dimple disc version manufactured in Holland, great sounding ECC83. Tested by AVO VCM Tester Ia1 = 1.2(mA), gm1 = 1.75(mA/V) Ia2 = 1.15(mA), gm2 = 1.7(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. 20220828L009

2x Mullard ECC83 Valves Date Code: I61 B3B4, I61 **** Yellow pirnt, copper-grid-support, and halo-getter Tested by AVO VCM Tester Valve 1 Ia1 = 0.85(mA), gm1 = 1.5(mA/V) Ia2 = 2(mA), gm2 = 1.8(mA/V) Valve 2 Ia1 = 1.55(mA), gm1 = 1.7(mA/V) Ia2 = 1.3(mA), gm2 = 1.5(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. 20221122L016

CV4004 Valve - Brimar? Ive Been Informed The printing on this valve is a bit rough on the second 0 of the CV4004 P&P to mainland UK is included in the price. You are always welcome to come and collect in person.

CV4004 Valve - Brimar I Assume P&P to mainland UK is included in the price. You are always welcome to come and collect in person.

For your consideration are two Mullard M8137 cv4004 with matching date codes. These are the military versions of Mullards 12AX7/ECC83 These tubes were tested in a Hickok 539C where the minimum reading is 875gm and the reading for a new tube is 1375gm. The tubes tested at 1600gm/1500GM & 1600gm/1600gm

Normal 0 false false false EN-AU X-NONE X-NONE Genuine NOS Brimar CV4004 / ECC83 / 12AX7 valve.Tested as Good and balanced for emissions on an EMC Model 203. Not tested for noise or microphonics. Postage is a flat rate A$10.00 within Australia and A$20 for overseas buyers.

1x Mullard CV492 Valve Very rare Mullard CV492/ECC83 with long plate and []-getter, new in original box Date Code: mC1 B6H (1956) Tested by AVO VCM Tester Ia1 = 1.58(mA), gm1 = 1.9(mA/V) Ia2 = 1.43(mA), gm2 = 1.7(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. 20230522L020

PHILIPS 12AX7 ECC83 CV492 M8137 CV4004 B339RARE UN-USED Valve, Made in Holland 1950sNEW OLD STOCK NEVER USED (I wish I had more of these)D Getter Tested at an incredible Ia = 1.2A / 1.2A @ gm = 1.8mA/V / 1.9mA/V I couldnt believe it so I took Photos! HAD TO OPEN THE BOX TO TEST IT.

ECC83,CV4004,HALF BOX PLATES.

1x Mullard CV4035 Valve Date Code: AG0 R7G(1957) NOS, soldered to a B9A pinout and can directly replace any CV4004/M8137/CV491/ECC83/12AX7 valve Tested by AVO VCM Tester Ia1 = 1.25(mA), gm1 = 1.7(mA/V) Ia2 = 1.45(mA), gm2 = 1.8(mA/V) NOS specification: Ia = (mA), gm = (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. 20221122L014

1x Mullard CV492 Valve Very rare Mullard CV492/ECC83 with long plate and []-getter, new in original box Date Code: mC1 B6H (1956) Tested by AVO VCM Tester Ia1 = 1.58(mA), gm1 = 1.9(mA/V) Ia2 = 1.43(mA), gm2 = 1.7(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. 20230522L020

2x HIVAC CV491 Valves Ultra rare NOS Hivac CV491/ECC82 with welded plate and []-getter Date Code: JK (1953), JF (1953) Tested by AVO VCM Tester Valve 1 Ia1 = 12(mA), gm1 = 2.3(mA/V) Ia2 = 14.2(mA), gm2 = 2.4(mA/V) Valve 2 Ia1 = 12.8(mA), gm1 = 2.45(mA/V) Ia2 = 12(mA), gm2 = 2.35(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. 20230522L002

2x Mullard ECC83 Valves Very rare pair of Mullard ECC83 manufactured in 1955 with long-plate and []-getter Date Code: mC1 B5F, mC1 B5F Tested by AVO VCM Tester Valve 1 Ia1 = 1.32(mA), gm1 = 1.55(mA/V) Ia2 = 1.45(mA), gm2 = 1.4(mA/V) Valve 2 Ia1 = 1.23(mA), gm1 = 1.5(mA/V) Ia2 = 1.48(mA), gm2 = 1.45(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. 20230522L001

2x BRIMAR 12AX7 Valves Date Code: 4F2 (1952), 3J2(1952) Early version of BRIMAR 12AX7 with long black plate and []-getter Tested by AVO VCM Tester Valve 1 Ia1 = 0.91(mA), gm1 = 1.6(mA/V) Ia2 = 1.15(mA), gm2 = 1.8(mA/V) Valve 2 Ia1 = 0.96(mA), gm1 = 1.65(mA/V) Ia2 = 1.03(mA), gm2 = 1.8(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. 20221122L001

1x VALVO ECC83 Valve Date Code: mCP DX Very rare ECC83 munfactured by VALVO (Germany) with long plate and inclined D-getter Tested by AVO Mark VCM tester Ia1 = 1.3(mA), gm1 = 1.6(mA/V) Ia2 = 1.35(mA), gm2 = 1.65(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. 20210507L030

2x Mullard ECC83 Valves Date Code: I61 B3B4, I61 **** Yellow pirnt, copper-grid-support, and halo-getter Tested by AVO VCM Tester Valve 1 Ia1 = 0.85(mA), gm1 = 1.5(mA/V) Ia2 = 2(mA), gm2 = 1.8(mA/V) Valve 2 Ia1 = 1.55(mA), gm1 = 1.7(mA/V) Ia2 = 1.3(mA), gm2 = 1.5(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. 20221122L016

2x Siemens ECC83 Valves Date Code: ?W mCP, *** ** Branded Mazda and Mullard but manufactured by Siemens Halske. Tested by AVO VCM Tester Valve 1 Ia1 = 0.95(mA), gm1 = 1.35(mA/V) Ia2 = 1(mA), gm2 = 1.4(mA/V) Valve 2 Ia1 = 0.95(mA), gm1 = 1.35(mA/V) Ia2 = 1.03(mA), gm2 = 1.4(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. 20220412L023

1x Mullard CV4035 Valve Date Code: AG0 R7G(1957) NOS, soldered to a B9A pinout and can directly replace any CV4004/M8137/CV491/ECC83/12AX7 valve Tested by AVO VCM Tester Ia1 = 1.25(mA), gm1 = 1.7(mA/V) Ia2 = 1.45(mA), gm2 = 1.8(mA/V) NOS specification: Ia = (mA), gm = (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. 20221122L014

5x TUNG-SOL ECC83 Valves Manufactured in 1963. Tested by AVO VCM Tester *** 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. 20220412L027

3x MONITOR 12AX7/ECC83 Valves Made in Holland Tested by AVO VCM Tester Valve 1 Ia1 = 0.9(mA), gm1 = 1.4(mA/V) Ia2 = 0.95(mA), gm2 = 1.45(mA/V) Valve 2 Ia1 = 0.98(mA), gm1 = 1.55(mA/V) Ia2 = 0.93(mA), gm2 = 1.5(mA/V) Valve 3 Ia1 = 1.2(mA), gm1 = 1.5(mA/V) Ia2 = 1.38(mA), gm2 = 1.6(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. 20220412L005

1x LORENZ/Holland ECC83 Valve Date Code: *** ?1G1 Rare dimple disc version manufactured in Holland, great sounding ECC83. Tested by AVO VCM Tester Ia1 = 1.2(mA), gm1 = 1.75(mA/V) Ia2 = 1.15(mA), gm2 = 1.7(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. 20220828L009

Brimar CV4004 (ECC83, 12AX7) Valve / Vacuum Tube. Great condition, supplied in a non-original plain white box. I am selling my spare valve collection, please see my other listings. UK sale only

2 X Brimar CV4004 Vacuum Tubes. These items appear to be in good condition.l, but are untested by me and sold as seen. For international shipping please contact me.