Hello, i came across an old turntable with an integrated small tube amp. Ripped out the amp section, plugged in the guitar and played it through a 1x12 cab. It works and sounds nice. This will be the foundation for my no-budget-bedroom-amp project. But since its a hifi amp it wont break up at all. I'd like it to be a bit crunchy. Any suggestions where to start modifying? Thanks.