Yamaha PDX-11, 3.5 mm, iPhone, iPod, AC, Battery, Alkaline, AA, 8 h Yamaha PDX-11. Headphone connectivity: 3.5 mm. Apple docking compatibility: iPhone, iPod. Power source type: AC, Battery, Battery technology: Alkaline, Battery type: AA. Weight: 3.31 lbs (1.5 kg). Compatible products: 237 x 211 x 240, Dimensions (WxDxH): 9.33 x 8.31 x 9.45" (237 x 211 x 240 mm) https://www.digitaltrends.com/wireless-speaker-reviews/yamaha-pdx-b11-review/ Yamaha, purveyor of everything from motorcycles to grand pianos, has always had a firm footing in the audio industry. That's why it was no surprise to us to find a Bluetooth speaker among the latest additions to its mammoth product line. Dubbed the PDX-B... Clean, powerful midrange, Ample max volume, Rugged construction Sharp, brittle upper register, Poor feature set, Occasional Bluetooth issues Some listeners may find the PDX-B11's “clean and light” top end to their liking, but this speaker just isn't our cup of tea, and not just because of its spitty treble. We're still scratching our heads over the lack of a built-in rechargeable battery at ...