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XE300. As the name suggests, Sony's ULT button is among the updates, a control that adds instant access to ULT1 mode for bass boost. The company also expanded the customizable EQ and added its Sound ...

Sony is gradually transitioning all of its XBass-prefixed speakers to its "bass-heavy" and "powerful ... four ULT-branded products in 2024 (three Bluetooth speaker models, including the Sony ...