JBL BOOMBOX 4 Features

Sound and performance

• Powerful pro sound with very strong , deep bass and high maximum volume while staying clear.
• AI sound boost that analyzes musc in real time to deliver more power with less distortion.
• Two sound profiles via bass boost: a deeper , fuller bass mode and a tighter, punchier bass mode.

Drivers and audio hardware

• Self driven system with two enlarged woofers, two tweeters, and three passive radiators for strong low end and clearer mids/highs.
• Redesigned internal acoustic structure compared to the previous boombox generation to increase input and clarity

Battery and Performance 

• Upto about 28 hours of playback on astandard charge, extandable to roughly 34 hours using a power-saving playtime mode.
• replaceable battery design so the packcan be swapped when it eventually wears out.

Connectivity and Pairing 

• Modern bluetooth(5.x series including, LE5.3-5.4 depending on the region) for stable wireless connection and batry efficiency.
• auracast/partyboost style multispeaker linking for stereo set-up or large party chains with compatible JBL speakers.
• USB-C wired digital input that supports lossless audio playback from compatible sources.

Design and durability 

• IP68 rating, meaning full dust protection and high water resistance for use at the pool, beach or outdoors.
• lighter housing than boombox 3 while still using a large carry handle and rugged exterior.
• illumanated JBL logos on the passive radiators that pulse when bass enhancement is active.