Sony Ult Field 7

The Sony ULT FIELD 7 (SRS-ULT70) is a high-output, weather-sealed wireless party boombox that succeeds the SRS-XG500, combining dual 114 × 114 mm X-Balanced woofers, dual 46 mm high-efficiency tweeters, dual-stage ULT1 / ULT2 POWER SOUND bass modes, an IP67 waterproof, dustproof, and saltwater-rustproof chassis, and up to 30 hours of battery life.

Dual X-Balanced woofers, ULT1/ULT2 modes, and Sound Field Optimization

Engineered for both indoor rooms and open-air gatherings, the ULT FIELD 7 uses two rectangular 114 × 114 mm (4.5 × 4.5 inch) X-Balanced Speaker Units and dual side-firing passive radiators to maximize diaphragm area and move substantial air without cabinet rattle, flanked by two 46 mm (1.8 inch) tweeters for crisp vocal and high-frequency projection. Its physical ULT button toggles between two distinct low-frequency tunings: ULT1 for deep, extended sub-bass rumble at lower-to-medium volumes, and ULT2 for punchy, high-pressure bass attack in outdoor spaces. Meanwhile, Sony's Sound Field Optimization continuously monitors ambient room or environmental noise and automatically adjusts EQ curves to keep music clear, while the Sony Music Center app provides a 7-band custom equalizer and beat-synced passive radiator ring lighting controls.

IP67 outdoor durability, 30-hour battery, and 100–240V AC Quick Charge

Rated IP67 waterproof, dustproof, and saltwater-rustproof, the 512 × 224 × 222 mm (6.3 kg) tubular enclosure features integrated molded side handles at both ends and can be positioned either horizontally or vertically. Its internal battery delivers up to 30 hours of playback with LED lighting off, while plugging directly into a 100–240V AC 50/60Hz mains socket (compatible with Bangladesh 220–240V outlets without an external brick) enables a 10-minute Quick Charge for up to 3 hours of playback as well as Battery Care overcharge protection.

LDAC high-res wireless, Party Connect, and 6.3 mm Mic/Guitar karaoke panel

Wireless streaming runs over Bluetooth 5.2 with high-bitrate LDAC codec support, 2-device Multipoint pairing, Stereo Pair, and Party Connect (linking up to 100 compatible Sony speakers). Under the sealed rear port cover, the ULT FIELD 7 provides a switchable 6.3 mm Microphone / Guitar input with dedicated physical gain, Key Control, and Echo buttons, a 3.5 mm stereo mini input, and a USB Type-A port for direct USB flash-drive music playback and 5V/1.5A smartphone charging.

Bangladesh buyer checklist

Before purchasing the Sony ULT FIELD 7 (SRS-ULT70) from any seller in the BiponiBD catalog, confirm the included figure-8 AC power cord, inspect the rear gasket seal required for IP67 water and dust protection, and verify seller warranty terms.

Official references: Sony Official ULT FIELD 7 (SRS-ULT70) Wireless Speaker Specifications.