It's hard to believe a simple fuse swap can make a difference but they absolutely do. This is the best return on investment for an audio system you will find. Various Synergistic Research and HiFi Tuning Fuses for sale. Price includes shipping to the lower 48 US. Reasonable offers will be entertained.SR Quantum Black Small: Original $119.95
SR20 Original Prices: Large $69.95 / Small $59.95 Broken in and ready for musical enjoyment pricing: 1A Fast Blow SR Black Quantum - Small (5x20mm) ($75) 1A Fast Blow SR20 - Large (6.3x32mm) ($35) 8AT Slow Blow SR20 - Large (6.3x32mm) ($35) 5A Fast Blow SR20 - Small(5x20mm) ($30)
HiFi Tuning: 8AT Slow Blow HiFi Tuning Silver - Large (6.3x32mm) ($30)
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