There are so many great things about Amoeba for the hardcore lover of classical music. There’s a separate upstairs mezzanine, free from the first floor’s frequently frenetic noise, filled with new and used discs, DVDs, and LPs. Staff members are knowledgeable — some are trained musicians — and host an area where they display their favorite new and used discs. New disc prices are discounted enough to force a certain national chain around the corner to lower theirs as well in order to remain competitive. Anything Amoeba doesn’t have in stock, it’ll order for you and sell at discount. Saturday’s used-classical-disc buyer Chris actually knows who Xenakis is, and treats you with respect. When you trade in your old discs for store credit, there’s no time limit for redemption. For new, postmodern, and who-knows-what music, Amoeba’s collection is second to none. For those who love Babatunde and Broadway as well as Beethoven, it’s all available under one roof.