Two Lightly used fast blow SR RED Quantum fuses, 4amp/500V fast blow, 32mm ---great for speakers, preamps, etc. in boxes. $40 each, $80 for both. (Originally sold for $80 each) Free shipping in US. REVIEW:
Robert S. Youman of Positive Feedback Online (Sept/Oct. 2014) wrote: "...with the RED fuse in place, this was the best my Playback Systems MPS-5 ever sounded. That typical edge and stridency on certain digital recordings was much better controlled if not gone... I could hear into the music with a new level of detail and speed that was easy to differentiate. The soundstage seemed to double in size for both depth and breadth, again, easy to hear and realize...The RED fuses are an absolute must audition...this product is a relatively inexpensive upgrade and can offer clear and immediate sound quality improvements to your system. Very highly recommended!"