Mullard Pair ECC32 / CV181 super balanced Matched Pair
A Matched pair of Mullard ECC32's (KB/DA).
Smoked glass, low D getter, brown base, round black plates.
These tubes are selected from a batch and have:
- within 1% balanced sections per tube
- within 5% match of sections for the pair
Testsettings:
settings: Va = 250V, Vg = -4.6V , Vh = 6.3 V
a good (NOS) tube test for: Gm = 2.3mA/V and Ia 6.0 mA
Testresults:
Tube 1: Ia1 = 6.42 Ia2 = 6.42
Gm1 = 2.3 Gm2 = 2.3
Tube 4: Ia1 = 6.40 Ia2 = 6.35
Gm1 = 2.3 Gm2 = 2.35
- General availability
- Very Rare
- Condition
- New old stock (NOS)
- Label markings
- label still recognizable
- Plate
- Round black
- Getter
- Low D-getter
- Glass
- Smoked glass
- Base
- Brown
- Triode section balance
- Within 1%
- Match for pair
- within 5% Match
test