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Psvane MARK TII Series tube have two sub version : TII Classic version Or TII Collector version
The difference between Classic version and Collector version : It's from the same production line, the best appearance, the best electronic parameters and the timeproof tubes will be selected to Collector Version. The standard quality tube will class to Classic Version.
There are the same selection method in the vintage tube, like telefunken select the best ECC83 to create E803CC, Mazda select the best 12AX7 to create their 5 star 3 mica 12AX7 for military or other important instrument use case
Classic version tube is packed with for each tube a small box if you purchase tube only:
Collector version tube is packed with for 2x tube a bigger stronger box like next photo, the box is for two tube, if you purchase 3 collectors tubes, that we will send you 2 tube in bigger box and another tube with a small paper box:
Filament heating voltage
UH………… 6.3 V
IH ………… 0.6 A
static parameter
Ua ………………………… 90 250 V
Ug………………………… 0 -8V
Ia ………………………… 10 9 mA
Gm………………………… 3 2.6 mA/V
Ri ………………………… 6.7 7.7 kΩ
μ ………………………… 20 20
Ia @Ug=-12.5V _ 1.3mA
Ug@Ia=-10uA - 7 -18V
Limit rating
Class A1 amplification (per side)
Ua………………………… 450V
Ik………………………… -20mA
Pa ………………………… 5w
Pa(No.1+No2) ………… 7w
Rg ……………… 1MΩ
Uhk ………………±100V
All these tube are factory matched tubes
HiFi EXQUiS use secure package to send the tube, We guarantee the tube will devliered to you with good condition.
But thank you always to check the tube state face with courier during delivery process.
PSVANE tube have 1 year guarantee
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