
The SR-221.3, showcased at ISE 2026, features dual 21-inch drivers, four 10-inch carbon-fiber midrange drivers, and a 5-inch ring-radiator compression driver.
This full-range loudspeaker achieves a remarkable 27 Hz–20 kHz frequency response and offers up to ~140 dB SPL with a 170° × 60° coverage pattern.
Theory Professional's SR Series includes eight models, available as passive, active, portable, and install variants, in compact cabinets.

* Tangzu introduces the Waner SG II Red Lion Edition, featuring a dynamic driver optimized for deep and powerful bass reproduction.

* The SMSL DAC MINI is a compact DAC and headphone amplifier tailored for seamless integration with Apple Mac mini systems.

* The Crescendo Verse, by Singapore-based LAiV, integrates an R2R DAC, active pre-amplifier, and Class A headphone amplifier in one compact unit.

* Beoplay H100 G-Dragon Edition headphones by Bang & Olufsen, limited to 188 units worldwide, feature a price of ¥284,900.