Klipsch unveiled two new powered Bluetooth bookshelf speakers in its Reference series recently. The R-40PM and R-50PM speakers replace older “41” and “51” models, upgrading design, pumping up bass response and broadening connectivity with a phone preamp so you can easily connect a turntable, in addition to most other sound sources via USB and other line-in connections.
What you don’t need with these speakers is an amplifier, because they’re powered already.