Portable boxed variacs for running a lower line voltage

[blackba]

Today I am using a small variac that is plugged in tom rack power conditioner with a display so I can set the voltage before turning on the amp. I like running my vintage amps at 115vac as I notice they seem to be a bit cleaner, less noisey, and more consistent day to day. The issue is now that I have biased them up assuming115vac, that I need to take the variac with me if I leave the house.

I saw a few portable variacs with displayed and wondered if anyone was using one or how hard they would be to build myself.

http://shop.vintagesoundworkbench.com/p ... roductId=5
http://www.amprx.net/store/p13/Brownie_ ... C2%A0.html
http://www.amprx.net/store/p19/2016_Brownbox.html

 

[sg guy]

-I have an old STACO bench model variac that I made into a rack mount,.. $75 off the bay-

-I run my stuff at 90/85v-

-works great!-

 

[blackba]

-I have an old STACO bench model variac that I made into a rack mount,.. $75 off the bay-

-I run my stuff at 90/85v-

-works great!-

Wow, down to 90V, that is low. What amp are you using?

Do you have a picture? What are you using to monitor the voltage or is that included on the Staco variac?

 

[sg guy]

-90v is "kinda" the industry standard,.. well according to EVH & RHODES, ....

-2203KK-

-of course everything else drops with it -(bias)- which I adjust for,

-there's a meter on my STACO variac-

-I have yet to master posting pics here, I don't do photo bucket, but if ya message me i'll send ya some pics-