Yes, the specs are out of date, to some degree. The EP500 does have line in and out, but they're XLR connectors (the EP350 also does). However, the line in XLR connector comes with a RCA->1/4" plug installed, which is electrically an unbalanced connection as you would need with most home theatre equipment these days. The crossover switch on the EP350 is indeed only that 80/150 switch.

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