I've had good results with Synergy Hifi fuses in my 36.5. I've also tried Furutech and HiFi Tuning. The Furutech are good, but expensive. The HiFi Tuning (standard version) made my treble sharp and narrowed the sound stage. They sounded so bad to me, I took them out of all my gear. The Synergy HiFi are very good and sound a lot like their tubes, which I'm also using They use the same nano tech as the tubes and are only $20.