Check the website to see what the 901 comes with, I'm not sure, probably a choice of amps. I bought my 901 used. I buy used gear 90% of the time. If you do the research you can find very good deals. the 901 i bought came with a Classic 2, Minibox, and Balanced. Ya, buying gear, listening to it, then buying better gear and moving up the chain is part of the hobby. ***But here is the thing you should really know if you want a 901s: in the US, if you have a 901, you can send it to HiFiMan and for $500 they will send you a brand new 901s (while supplies last). http://store.hifiman.com/index.php/exclusive-offer-for-loyal-901-owners.html So, you dont need to send them a new 901 for a new 901s; You only need to send them a USED 901 for a NEW 901s for $500. Ya, $500 is a lot. But if you buy an older, beat up 901 for a good Used price (eg, $500), then pay the $500 to get the upgrade to the "s" version, then you have only spent $1000 for brand spankin new 901s valued at $1500. So if you then dont like the 901s, you can sell it used ($1200) and actually make a little money ($200). IOWs, you have options. Part of the hobby and the game.