AlphaTheta Sets October 28 Release For HDJ-F9 Wireless DJ Headphones
AlphaTheta is selling the HDJ-F9 on the claim that wireless latency is now low enough for stage monitoring, which is the condition that has kept DJ headphones wired.
Reporting from 1 source: ASCII.jp.
AlphaTheta will release the HDJ-F9, a professional on-ear wireless DJ headphone, on October 28, 2026, priced at 54,780 yen including tax. The model carries SonicLink, the company's ultra-low-latency wireless technology, rated at 9 ms of latency. SonicLink touch pairing connects the headphones to compatible DJ equipment, and the separately sold HP-TX01 transmitter extends that connection to other devices.
The HDJ-F9 uses a newly developed 40 mm driver inside a compact on-ear housing, paired with a bass-reflex air chamber in the upper housing and a PEEK-PU-PEEK composite diaphragm. AlphaTheta says the combination reproduces sub-bass and the attack of kicks and bass while holding distortion down in the mid and high ranges, and that internal structure changes give the on-ear model sound isolation suited to a noisy DJ booth.
A swivel hanger and flexible silicone headband allow single-ear monitoring and other wearing styles. The dedicated HEADPHONES CONNECT app customizes the status LED color and brightness.
Synthesized by Yomimono from the 1 cited source below, including Japanese-language reporting where cited, then editorially reviewed before publishing.