gksdud2707
New member
Hello, I assembled my aion dz4 and tested it before putting it in the enclosure. (Because it is a test, the length of the in and out wires is long)
Below are some problems I encountered
1. If the guitar is not connected, it makes a whistling or squealing sound.
2. When the guitar is plugged in, it works normally, but there is an annoying noise in the background. (I tested it side by side with my vh4-2)
3. When I touch the gain and treble pot, it makes noise or whistles.
Is there a problem with my assembly? Or should c3, c5, c9, c12, c21, c23 be replaced with electrolytic caps like valhalla?
Last edited: