Described as a “Docking eTurntable,” Sergio USA’s iSpin ($140) is a dual iPod-docking mixer with an included headset and the ability to modestly process two iPods’ music prior to outputting it to speakers. By default, one iPod’s output goes to the left speaker, while the other iPod’s goes to the right, and a cross-fader lets you adjust their balance relative to each other. A dial for reverb or flange lets you add…
