The smaller, less expensive S125i looks a little alien from the front and kidney bean-like from the top, packing a couple of roughly 1.25” speakers into a semi-glossy black plastic casing with high-contrast white oval metal speaker grilles. S125i’s front has volume, power, and bass boost buttons, while its top has a Universal Dock well, and its back has ports for wall adapter power and auxiliary audio input. Logitech supplies a wall adapter…