Welcome To the Hoffman Amplifiers Forum

September 06, 2025, 12:38:49 pm
guest image
Welcome, Guest. Please login or register.
-User Name
-Password



Hoffman Amps Forum image Author Topic: Variac purchase  (Read 2864 times)

0 Members and 1 Guest are viewing this topic.

Offline makjoh

  • Level 1
  • *
  • Posts: 24
  • I love Tube amps
Hoffman Amps Forum image
Variac purchase
« on: March 20, 2021, 02:23:14 am »
Variacs appear to quite rare to get hold of here in the UK. So it has to be one of the Chinese specials from ebay. What is the amp rating I should be considering when using it for amp work?

Offline Latole

  • Level 4
  • *****
  • Posts: 2522
Hoffman Amps Forum image
Re: Variac purchase
« Reply #1 on: March 20, 2021, 04:08:35 am »
If you bought this one ; it is a 0.5 kws transformer. See picture
0.5 kws = 500 watts
You can use it with any amp with input power consumption of no more of 500 watts; almost any amp. It is write on the back of the amp close to the fuse or power cable.

Guitar Amp Models. Fuse Value. Power (Electricity) Consumption

Fender Champion 100
1.5A
180 Watts

Orange Crush 12
315mA = 0.315A
38 Watts

Marshall Amp
2A
240 Watts

Monoprice 611815
0.5A
60 Watts

Line 6 Spider Jam Guitar Amplifier
5A
600 Watts

Mesa Express 5:50
3A
360 Watts
« Last Edit: March 20, 2021, 04:14:55 am by Latole »

Offline makjoh

  • Level 1
  • *
  • Posts: 24
  • I love Tube amps
Hoffman Amps Forum image
Re: Variac purchase
« Reply #2 on: March 25, 2021, 05:40:37 pm »
Much obliged for the helpful info Latole :worthy1:

Offline Latole

  • Level 4
  • *****
  • Posts: 2522
Hoffman Amps Forum image
Re: Variac purchase
« Reply #3 on: March 26, 2021, 02:30:56 am »
You are wlecome.

I went few times in UK, mostly England. I love these country.

 


Choose a link from the
Hoffman Amplifiers parts catalog
Mobile Device
Catalog Link
Yard Sale
Discontinued
Misc. Hardware
What's New Board Building
 Parts
Amp trim
Handles
Lamps
Diodes
Hoffman Turret
 Boards
Channel
Switching
Resistors Fender Eyelet
 Boards
Screws/Nuts
Washers
Jacks/Plugs
Connectors
Misc Eyelet
Boards
Tools
Capacitors Custom Boards
Tubes
Valves
Pots
Knobs
Fuses/Cords Chassis
Tube
Sockets
Switches Wire
Cable


Handy Links
Tube Amp Library
Tube Amp
Schematics library
Design a custom Eyelet or
Turret Board
DIY Layout Creator
File analyzer program
DIY Layout Creator
File library
Transformer Wiring
Diagrams
Hoffmanamps
Facebook page
Hoffman Amplifiers
Discount Program


password