Product Price Impedance (ohms) Frequency Response (Hz) Sensitivity (dB/mW) Driver Size (mm) Closed Back Wireless Weight (g)
Sennheiser HD 650
US
£258.81 300 ohms 10 Hz - 41 kHz 103 dB 42 mm 269 g

The Sennheiser HD 650 is an open-back, wired reference headphone with 42 mm dynamic drivers, a wide 10 Hz - 41 kHz frequency response, and detailed, natural sound. Its detachable cable, replaceable components, comfortable design, and high 300-ohm impedance make it well suited to studio monitoring and audiophile listening with a capable headphone amplifier.

★ Ideal for

The HD 650 suits heavy studio use because its detachable cable and replaceable components support long-term maintenance, while its open-back design, 103 dB sensitivity, and balanced reference response support detailed monitoring during extended sessions.

Sennheiser HD 25
US
£85.28 70 ohm 16 - 22000 Hz 120 dB 140 g

The Sennheiser HD 25 is a lightweight, wired, closed-back on-ear headphone designed for professional monitoring, DJing, broadcast, and field recording. Its high isolation, rotatable ear cup, detachable cable, and rugged construction suit noisy environments and extended professional use.

★ Ideal for

The HD 25 suits heavy studio use because its 140 g lightweight build, closed-back isolation, detachable cable, replaceable parts, and rugged touring-focused construction are designed for long-term professional use.

AKG K240 Studio
US
£48.94 55 ohms 15 - 25000 Hz 104 dB SPL/V @ 1 kHz 30 mm 240 g

The AKG K240 Studio is a wired, over-ear semi-open headphone with 30 mm Varimotion transducers, a self-adjusting headband, and a detachable cable. It suits studio mixing, mastering, monitoring, and playback where detailed sound and long-session comfort are important.

★ Ideal for

It suits heavy studio use with its durable construction, self-adjusting headband, detachable replaceable cable, and 200 mW maximum input power.