Thanks Jon,
I have seen those so perhaps a manual is useless? I also saw a post about upgrading the diodes but am not sure where they are. The amp I bought was used and has the teflon v-caps and it is possible that it was modded by Bill Baker at Response Audio. I am not sure how to insert an image but will try to post a pic with the bottom cover off. It is a nice amp and I plan to keep it a long time. Have you tried a upscale fuse in it? I have used them in a DAC and CDP with positive results.
Les