I agree with Hacker , I fitted some Mini Cap6 module from Avondale , to my mates old 160 , took it to another level , loads of detail , tighter bass , if you look on my profile and search through threads started by me , you will find some pictures and a description of how the sound improved.... Jon
To disable the current limiting circuit , just rip out the two little transistors nearest to the heat sinks , the ones either side of the two blue tantalum caps labelled 4 and 5.