Atohm GT SW2-HD Subwoofer

The low end your GT-series speakers deserve — deep, controlled, and never boomy.

Audio Emporium called it "uniquely deep and CONTROLLED bass response" that impressed even a self-described piano purist.

A lot of subwoofers chase a big number on the spec sheet and let detail and control fall by the wayside. The GT-SW2-HD takes the opposite approach: instead of one giant driver in a loose box, it pairs two compact 23cm drivers with a dedicated 500W amplifier inside a tightly sealed 22-liter enclosure, so the low end stays fast and controlled rather than washing out into an undefined rumble.

That control comes from Atohm's X-Guard technology actively managing driver excursion in real time, preventing the kind of distortion and mechanical strain that turns bass "impact" into bass "mush" once you push the volume. The result is genuinely deep extension — 23Hz at -3dB — with a speed and precision that a lot of larger, boomier subs simply can't match. It's also built to match, not just complement: the same flowing lines and piano-lacquer finish as the rest of the GT range mean it looks like it was designed alongside your speakers, because it was.

If your GT-series speakers need low-end reinforcement without giving up the precision that made you buy them in the first place, this is the subwoofer built specifically for that job.