PSVANE 211-TII VACUUM TUBE Mark II 211 Electron Tube Collection Grade Vintage Hifi Audio TUBE AMP DIY (one pair)

NOTES: Price = one pair (2pcs)
 

1. Mark TII-Series: Positioning in exceeding totally, not only exceed all the same types of productions that always been imitating on the market, but also to exceed itself. 

2. 211-TII is direct-heated type thorium tungsten cathode triode, can be used as class A, B and C.
 

Heater

Uf--------------------------------------10 V

If---------------------------------------3.25 A

Direct Interelectrode Capacitances

input----------------------------------6 PF

output----------------------------------5.5 PF

grid to plate----------------------------------14.5 PF
 

Static parameter

Ua--------------------------------------1250 V

—Ug------------------------------------70 V

Ia--------------------------------------100 mA

Gm-------------------------------------3.8 mA/V

u(when Ia=75mA)---------------------------12

RL--------------------------------------7 KΩ

Pout------------------------------------10 W
 

Recommended Operating Conditions ( reference value)

class A(A-F) for two tubes：

typical working condition     limited parameter

Ua--------750 1000 1250 1250 V

Pa----------------------------75 W

—Ug-------46 61 80 V

Ug(pk)-----41 56 75 V

Ia(0)-------34 53 60 mA

ri---------4.4 3.8 3.6 KΩ

RL--------8.8 7.6 9.2 KΩ

Pout-------5.6 12 19.7 W

Push-pull. class B(A-F)

typical working condition     limited parameter

Ua------------------ 1000 1250 1250 V

Ia (mAx.sig per tube)-------------------175 mA

Pa (in) (mAx.sig per tube)--------------- 220 W

Pa (per tube)------------------------- 100 W

—Ug------------------72 95 V

Ug(pk)-----------------380 410 V

Ia (0)------------------20 20 mA

Ia（mAx.sig）-----------320 320 mA

Pd(mAx.sig)------------7.5 8 W

RL(a—a)---------------6.9 9 KΩ

Pout------------------200 260W