Sony ULT FIELD 1 SRSULT10/B Black portable speaker

Compact Portable Speaker for Bass-Focused Listeners

The Sony ULT FIELD 1 SRSULT10/B is a Bluetooth wireless portable speaker built for music lovers who prioritise deep, powerful low-end. Its compact body houses optimised side passive radiators and a Sound Diffusion Processor to expand audio in any space. Pressing the dedicated ULT button activates enhanced bass output designed to deliver a concert-like vibe. The package includes a multi-way strap for flexible carrying options.

Upgrade from Basic Portable Speakers When Bass

This model replaces smaller, balanced-tuned portables that lack physical radiators and dedicated bass-boost processing. The jump is worth it when you regularly listen outdoors or in large rooms where low frequencies dissipate quickly and you want palpable impact without a larger cabinet. If your current speaker sounds thin at volume or distorts on bass-heavy tracks, the ULT FIELD 1 addresses those limits.

Suits Outdoor Enthusiasts Needing Durability

The IP-rated waterproof, dustproof and shockproof construction suits hikers, beach-goers and festival attendees who expose gear to sand, rain or drops. The multi-way strap allows attachment to packs, handlebars or tent loops for hands-free placement. Buyers who need stereo pairing, voice-assistant integration, or a built-in power bank for charging phones should look at alternatives, as this unit focuses solely on rugged mono playback.