dont think there are any shops carrying them, but couple users have them, belanja them kopi starbucks, and have a listen to it

its up to your individual taste. by colored in shades i mean that you won't achieve neutrality, transparency with tubes. not impossible to achieve though, with careful tube rolling and matching, you can still achieve neutrality.

main drawbacks of tubes: loss of PRaT, treble roll-off, lack of bass depth, loss of details and placement.

advantages: musicality, naturality, smoothness and lushness of sound.

i listen to everything with tubes, pop, rock, jazz, metal, orchestras etc etc. ultimately, its what kind of sound you are looking for.