The bass on the 2xMC2102's gets larger and grows with the music as you turn up the volume, the 501's bass gets tighter as does most SS bass. I think the tube bass is more natural sounding.
In the upper frequencies again the Mc2102's have better depth and more of a 3d effect, whereas the 501's sound somewhat mechanical and 2d in comparison.
The C2300 sounded better with the MC2102's than did the 501's.
Don't get me wrong, the 501's sound good but if you like the sound of tubes, you won't look back.
cheers
In the upper frequencies again the Mc2102's have better depth and more of a 3d effect, whereas the 501's sound somewhat mechanical and 2d in comparison.
The C2300 sounded better with the MC2102's than did the 501's.
Don't get me wrong, the 501's sound good but if you like the sound of tubes, you won't look back.
cheers

