MARS AE2600 Downstacker Bill Acceptor If you have a game that requires a downstacking bill acceptor, the MEI Series 2000 AE2600 Downstacker bill acceptor is for you. AE2600 Downstacker bill acceptors provide all the performance and capabilities of the AE2600 Upstacker bill acceptor in a downstacking configuration that's perfect for many amusement machine applications. Like its upstacking sibling, the AE2600 Downstacker bill acceptor accepts $1, $2, $5, $10 and $20 bills with its advanced optical sensing system.		MARS AE2600 Upstacker Bill Acceptor Want a Series 2000 bill acceptor but need $10 and $20 bill acceptance? The MEI Series 2000 AE2600 Upstacker bill acceptor is for you. Like other Series 2000 bill acceptors, the AE2600 Upstacker bill acceptor uses optical sensing technology for accurate, reliable bill acceptance. AE2600 Upstacker bill acceptors are compatible with older MEI bill acceptors-such as the GL5 and AL4 series-so they make a great drop-in replacement.