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Gu 81m

2:54

GU-81LM Radio Tube

ChipDipvideo

7.7K views

8:56

GU-81M VACUUM TUBE review and TORROIDAL TRANSFORMER part1..

Black Squad

115 views

6:34

New GU-81M VACUUM TUBE..QUICK Review & Pinout !!!

Black Squad

175 views

7:05

I Got A Couple Of GU-81M Pentodes...

VK6CS

3.8K views

5:28

12.6V On The GU-81M Filaments

VK6CS

704 views

2:14

HF amplifier GU-81m

50w50

4.1K views

16:44

Predisesors of the GU-81M: Part 1 (RS384, SRS502, RS684)

lbochtler

3.7K views

2:42

GU-81M pentode

przemyslaw landowski

1.5K views

6:46

Type 81 Extended Mag Release

Nic MacKay

204 views

1:55

VTTC with GU-81M tube finished version

jmartis2

5.7K views

12:43

GU81M vttc with schematic 55cm + ⚡

Tested to Destruction

6.9K views

2:47

GU-81M - AP Audio - test in home system audio_1

AP Audio

284 views

1:05

quick GU81M plasma flame lash up 😁

Tested to Destruction

3.7K views

17:37

Revisiting The GU81M: Probably Not The best Choice For A Linear Amp!

The WTF

4K views

10:00

Unboxing A GU-81M Pentode

VK6CS

740 views

0:22

GU-81M VTTC 6"

All Science

1.7K views

5:32

GU 81M Push Pull 2 x 1200W

Gubán Gábor

3.3K views

0:39

GU-81M VTTC test

hyparh

104 views

0:33

vttc gu81m

MrCoccante

1.7K views