Thanks Paul. I just pulled my fuses and checked, I can not remember if they are original or not and wanted to make sure I have the right ones. Crack and Eros read F1AL 250V, BeePre2 reads LF. T1AL 250V. The BeePre2 fuse has a thicker wire inside so I assume it is a slow blow? Also the T would indicate it is a slow blow too. My power amplifier YBA Alpha 3 has a fuse that reads 5A but no other markings. It is filled with white sand like crystals. Is there a way to tell if it is slow or fast blow? The amplifier briefly draws just over 4 amps at start up. Thanks again.