I own a Giscours that I use with Sinhonia F2a amps. I used to own a Masseto.
No disrespect to the OP, but if you just bought a Masseto and immediately feel the need to experiment with different tubes, fuses, and power cords, you have ENTIRELY missed the point of Shindo. You have a world-class piece of electronics designed by someone who understands better about what works best with his equipment than you or I will ever hope to know. Leave your Masseto alone, and just enjoy the music. If you want to fiddle, buy a Cary and have at it.
No disrespect to the OP, but if you just bought a Masseto and immediately feel the need to experiment with different tubes, fuses, and power cords, you have ENTIRELY missed the point of Shindo. You have a world-class piece of electronics designed by someone who understands better about what works best with his equipment than you or I will ever hope to know. Leave your Masseto alone, and just enjoy the music. If you want to fiddle, buy a Cary and have at it.