Yamaha PDX-30, 2.0 channels, 30 W, 6 Ω, 0 - 1000 Hz, Gray, 3.15" (8 cm) Yamaha PDX-30. Audio output channels: 2.0 channels, RMS rated power: 30 W, Impedance: 6 Ω. Product color: Gray, Driver unit: 3.15" (8 cm). AC input voltage: 100 - 240 V, AC input frequency: 50 - 60 Hz. Width: 13.8" (350 mm), Depth: 4.92" (125 mm), Height: 4.29" (109 mm). Dimensions (WxDxH): 13.8 x 4.92 x 4.29" (350 x 125 x 109 mm) https://www.ilounge.com/index.php/reviews/entry/yamaha-pdx-30-portable-player-dock-for-iphone Yamaha wasn’t a major iPod speaker maker, but with the recently-released four-driver audio system PDX-30 ($200), it’s obviously ready to take an aggressive stab at the combined iPod and iPhone audio market, though with a few notable wrinkles. The comp...