Yep, only one fuse adjacent to the AC in. Why an “audiophile fuse” should have any impact on sound quality is beyond me. Never would have believed it if I had not tried it, but the difference is obvious.
I totally agree. These device should not make a difference. Here's an explanation I posted on Facebook a while back....
Well designed equipment does NOT rely on clean AC power. It cleans the power instead. Take the DAC DAC for example....
DC power is provided externally, and internally, it is filtered then DC/DC converted and isolated. From there, it is filtered again and linearly regulated with high performance, super low noise regulators. From there, additional filtering is applied and re-applied for the various circuit sub-sections. There is NO measurable difference in the output measurements (FFTs, THD+N over freq and amplitude, SNR, etc.) between 1Vpp noise on the power supply and 10mV of noise on the power supply. PLUS, this power supply is regulated, so it's already nearly immune to even the most horrendous AC line fluctuations. Cherry power amps use similar techniques to alleviate the concern over clean AC Mains. This is how you do it, folks. No voodoo required, just good engineering.