Awesome Henric as usual. That would have been perfect in my 87x i was gonna ship to u if weren't for the 6 to 800 cad shipping one way... Is that your normal 3 gain stage in the dirt channel? Keep up the great work brother!!!
Another masterpiece. Love the way it responds to the volume control. How do you test this on the bench? My thoughts would be to have a 100 mV signal 500 Hz and tweak the gain stages so it stays clean all the way, on the edge of distortion, while increasing the signal will not increase volume that much anymore but the tube is saturating
Thank you! Yes, you can use an oscilloscope and see the relationship between the gain stages but most of all it needs to feel right in the hands. And the to get the best results you have to pay attention to the distortion harmonics which changes not only by the preamp tube headroom/operating point/bias but also by the frequency response of the preamp circuit. To my ears that’s what’s really get a well tuned tube circuit to feel alive. 👌🏻
