I recently took my first step into the world of tubes with a Little Dot headphone/pre amp from amazon.
a very highly regarded piece of kit...I am currently using to great effect purely as a pre.
it has only one input but this presents no problems as all my sources are routed through my DAC... a SMSL sanscrit, also cheaply purchased from amazon.
I was wondering if anyone has experience of this amp and can recommend a decent tube upgrade, the supplied Chinese valves are reputed to be quite poor.
I must add that even on its current tubes the sound is (for the money) stunning.
NIGE.