Marshall VBA 400 a look inside for a service

[basstone]

I had this monster 400W valve amp in the workshop this week for a check over. Generally in good shape and just needed one ECC83 in the preamp and a new thermal trip. Thankfully all of the power tubes checked out OK otherwise it would have been an expensive job. I Was quite impressed by the build quality and it was easy to get to everything and set the bias (see photo for procedure). I didn't get to try it out in anger with a bass and cab, but the tone options seemed to work quite well.

 

 

 

 

[The Funk]

I don’t understand any of it but it looks wonderful to me for some reason!

[dudewheresmybass]

beautiful sounding amps.

Marshall really don't get anywhere near enough Bass love.

Although unfortunately, this is the only bass amp they now make 😒

[basstone]

On 31/08/2023 at 18:47, The Funk said:

I don’t understand any of it but it looks wonderful to me for some reason!

They look good, sound good, weigh a ton and can be expensive to maintain. It was fairly easy to work on and this one was in great condition! Also make good room heaters as an added bonus!

[velvetkevorkian]

Presume your forklift is just out of shot here 😅

[thebigclunk48]

Mine gave me great service for many years, until I got too old to lift it. Not quite as much bass as my Ampeg Portaflex but 10 times the weight!