Sunn sonaro distorting ?

[Freewill]

My sunn sonaro amp is distorting when I turn the volume past 4? 1st time it does this

 

[MAMMOTHvolume]

My sunn sonaro amp is distorting when I turn the volume past 4? 1st time it does this

check your valves, if one of your power bottles has gone it's ussually a symptom of this

 

[Freewill]

Valves meaning tubes?

 

[edbass]

Is it the 40 watt combo amp or the separate head version?
If you have a Sonaro, it's 40+ years old. When was the last time the filter caps were changed out?

Ask at the Link Removed, lots of friendly, truly knowledgeable folks with lots of vintage Sunn experience there.

 

[Freewill]

It's separate, head and cab

 

[Mr. Foxen]

If it hasn't been serviced, I would say a whole bunch of things going a bit wrong.

 

[Freewill]

The entire head was rebuilt but still original tubes

 

[Freewill]

The tubes I know are old but until 2 days I was still getting a good sound

 

[Mr. Foxen]

"Entirely rebuild" can mean a lot of things.

 

[edbass]

"Entirely rebuild" can mean a lot of things.

Yes indeedy...

The entire head was rebuilt but still original tubes

Do you have the old parts that were replaced? If so, post a pic of them, that should tell the story pretty well.