@cakyol and @jasonbourne52   I've used SR Black and Blue fuses in two amps for about 7 years without blowing them (until a tube went and the amp had a bad cap/replaced).  I put an SR blue fuse in my EAR 864-immensely superior sound on CDs, LPs, R2R and cassettes (Nakamichi 7A).   NO PROBLEMS.  The cheap ass glass fuses are NOT made for audiophile purposes and diminish sound quality in no uncertain terms.  In a low end system you probably will not notice a difference.  In my high end system and even my lesser system, they make a HUGE sonic improvement.  The glass fuse permitted some recordings to sound good while diminishing the quality of others.  The SR fuses made ALL recordings sound better.  

My electronic and cable manufacturing friend uses circuit breakers instead of fuses after he heard my system.  He hates tweaks but acknowledges the superiority of audiophile protection circuit parts (breakers and audiophile fuses).   He also uses $25 fuses in his DAC and transport.