OUR INSTRUMENTS ARE CALIBRATED WITH REFERENCE TUBES AND POWERED WITH UPS LINE VOLTAGE FOR A MORE ACCURATE AND STABLE MATCHING PROCESS

For English Language see below

12AX7 ( ECC83 ) RCA NOS by MULLARD Short Plates Tested Tube Valve 

MADE IN GT. BRITAIN

Prodotte da MULLARD nello stabilimento di Blackburn

Codice di fabbricazione: ??? B5K4

Loghi usurati come da foto

L'offerta è per una valvola selezionata "Tested Tube"

Testate su Amplitrex AT-1000 Tube tester:

Voltage Test: Va = 250V, Vg = -2V, Vf = 6,3V

Media 100% Gm = 1600 ; Ia = 1,2 mA

RISULTATO DEL TEST: MOLTO FORTE

Sezione 1: Gm 1850 ; Ia = 1,3 mA

Sezione 2: Gm 1650 ; Ia = 1,2 mA

Ulteriori test eseguiti:

Test Microfonia

Qualità dell'Emissione

Test per Cortocircuiti

Test per GAS

Spedizione con imballo protetto per una maggiore sicurezza.

Imballaggio in carta riciclata e riciclabile. Nastro adesivo di chiusura in carta marrone - ECO-KRAFT

Eco compatibile - SOLVENT FREE

12AX7 ( ECC83 ) RCA NOS by MULLARD Short Plates Tested Tube Valve 

MADE IN GT. BRITAIN

Manufactured by MULLARD in Blackburn plant

Same data code: ??? B5K4

Logos worn off as pictured

You are bidding for a Tested Tube

Tested on Amplitrex AT-1000 Tube Tester:

Voltage Test: Va = 250V, Vg = -2V, Vf = 6,3V

Average 100% Gm = 1600 ; Ia = 1,2 mA

TEST RESULT: VERY STRONG

Section 1: Gm 1850 ; Ia = 1,3 mA

Section 2: Gm 1650 ; Ia = 1,2 mA

Other test made:

Test for Microphonics

Test for Emission Quality

Test for Shorts

Test for GAS

Shipping with protected packaging for best security.

Our Packaging is in recycled and recyclable paper. Brown paper sealing tape - ECO-KRAFT

Eco friendly - SOLVENT FREE