Problem solved. Rewired the output transformator and ready to rock.

It's sound great at the moment.

Hello,

Just finished building my home made 18 Watt amp. The amp works fine but only when i don´t used the tube V3 for the cathode follower. When i put the V3 in the amp the amp start to oscilate. I swapped the V1 and V3 tube but no results so i think the tube is fine. I checked also the wiring but seem to me that that is also oke.

When i play without the V3 in the amp everything seems to work fine. Only a little hum. Of course i can only used the input 1.

It should be fine if some here can help me a little bit to solve this problem.

Kunk