SONY SRS-ULT50

Portable Party Power. Deep Bass. All-Day Durability.

The Sony SRS-ULT50, also known as the ULT FIELD 5, is a powerful, portable Bluetooth speaker designed to deliver heavy bass and robust durability for both indoor parties and outdoor adventures . As a key model in Sony’s ULT POWER SOUND series, it replaces the previous “EXTRA BASS” lineup with a new focus on customizable low-end impact .

Engineered for flexibility, the ULT FIELD 5 features a dedicated ULT button that allows you to switch between two distinct bass modes: ULT1 for deep, low-frequency bass that you can feel, and ULT2 for powerful, punchy bass designed to energize a crowd . To ensure clarity even at high volumes, the speaker utilizes a 2-way speaker system with a large X-Balanced speaker unit for reduced distortion and separate tweeters for clear vocals and high-frequency sounds .

Designed to go anywhere, the ULT FIELD 5 boasts IP66/IP67 ratings, making it waterproof (able to withstand splashes and even brief submersion), rustproof, and dustproof—perfect for beaches, poolsides, or campsites . With a long battery life of up to 25 hours and a convenient built-in shoulder strap, it ensures your music keeps playing wherever you take it .