Higher end Tubes for Ah Njoe Tjoeb 4000


I have an Ah! 4000 and want to do some tube rolling. Who knows higher quality tubes that they've tried with this cd player? What were your perceptions? Thanks!
douglas_schroeder

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I just received the Amperex 7308's from Kevin at Upscale Audio. They are much smoother with better bass than the stock tubes.