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(!!!!) (Best Single) RS237=211 Telefunken Germany dimpled metal plate NOS 1938 in white box (103.6mA Gm=4330) (NOS=80ma)

$ 1,899.99

1 tube) RS237=211 Telefunken Germany metal plate NOS January 18th, 1938 in white box

103.6mA

Gm=4330

 

Amplitrex Tested

Vplate=500V

Vgrid = -1V

NOS Ma = 80ma

NOS Gm = 4000

The dimpled anode is carburised for better radiation

 

Listened too in 211 SET amp shown in the 2nd photo and sounds excellent Vplate=1000V @ 50mA bias

- Tango transformer coupled with 10X-s outputs

- Speakers used: Avant Garde horns

- Pre-amp used: Shindo Masetto

 

 

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