Sony just expanded its nascent Ult lineup of portable speakers in a big way, unveiling a list of new options that range from sensible and small to, quite frankly, absurdly large. While some might be hard to imagine in the hands of regular listeners, the smaller end of the scale seems really persuasive.
The biggest pair of the lot is the Ult Tower 9 and its wired version, the Ult Tower 9AC. These two are identical from a sound and design point of view, but the first version has battery power that can run for over 24 hours, while the latter needs to be plugged in to work.
