JBL's Quantum 120 is the point in the new gaming range where the specification sheet deliberately stops before wireless hardware begins increasing the price.

It is available in France for €44.99 and uses a 3.5 mm analog connection exclusively.

The hardware starts with 50 mm carbon drivers

JBL lists 50 mm carbon dynamic drivers with a frequency response of 20 Hz to 40 kHz, 32-ohm impedance and sensitivity of 100 dB SPL at 1 kHz.

Maximum input power is rated at 30 mW, and Hi-Res Audio support is included.

Those specifications should not be mistaken for independent sound-quality measurements. A 40 kHz upper figure does not by itself establish how neutral, detailed or controlled the headset will sound in actual use.

QuantumENGINE provides much of the extra functionality

JBL Quantum Spatial Sound is handled through the QuantumENGINE software layer, which is designed to improve positional cues and allow users to create game-specific profiles.

The software also provides a real-time sound visualizer and microphone controls.

That makes software unusually important for a relatively inexpensive wired headset. The physical connection is intentionally basic while more of the customization happens on the host device.

A removable cardioid microphone keeps things simple

The detachable boom uses a 6 mm cardioid capsule with a listed frequency response of 50 Hz to 15 kHz and sensitivity of -40 dBV/Pa at 1 kHz.

QuantumENGINE can apply noise-reduction processing intended to reduce unwanted sounds including keyboard noise.

The design has a practical advantage: the microphone stays close to the speaker when voice chat matters and can be physically removed when it does not.

Analog audio makes compatibility straightforward

JBL lists Windows, macOS, PlayStation, Xbox, Nintendo Switch and mobile devices as supported platforms.

The analog connection avoids console-specific wireless compatibility problems. The obvious exception is hardware that no longer includes a 3.5 mm output, where an appropriate adapter becomes necessary.

There is also no battery-life figure because there is no battery. That removes charging from daily use and eliminates one of the major long-term wear components found in wireless headsets.

The complete headset weighs 265 grams

JBL lists the Quantum 120 at 265 grams. Breathable fabric covers the ear cushions, while the headband uses silicone.

The company says some of the plastic is recycled and the packaging uses FSC-certified paper printed with soy ink.

At €44.99, the decisive questions will be mundane ones: actual frequency response, microphone clarity, clamp pressure and comfort after several hours.

Battery life, at least, is one test it cannot fail.