Status, October 2026: current. Sennheiser still sells the HD 25 as article number 506909.
What it is
The HD 25 is a closed-back, on-ear monitoring headphone from Sennheiser, made for DJs, broadcast and field recording. Sennheiser says the HD 25 line has been in DJ booths and broadcast trucks for more than 30 years. The current version dates from early 2016, when Sennheiser cut seven HD 25 variants down to three: this classic HD 25, the entry-level HD 25 LIGHT with a simpler headband and different drivers, and the HD 25 PLUS, which adds a coiled cable, a pouch and velour ear pads (audioXpress).
It uses dynamic drivers with lightweight aluminium voice coils, with a frequency response of 16 Hz to 22 kHz, a nominal impedance of 70 ohms and a maximum SPL of 120 dB. The split headband holds the cups with about 2.5 N of contact pressure, and one cup rotates away for single-ear monitoring. It weighs about 140 g without the cable.
The connection is wired only: a detachable, single-sided 1.5 m straight cable ending in a 3.5 mm plug, with a screw-on adapter to 6.3 mm (1/4 inch) for mixers and controllers. Sennheiser lists accessories and spare parts separately, including a 3 m coiled HD 25 cable.
According to the product specification, the box holds the headphones, the detachable 1.5 m cable, the screw-on 3.5 to 6.3 mm adapter and safety instructions. Sennheiser backs it with a two-year warranty.