The sonic signature is expectedly tuned for detail, voice quality, and directional sense which matter in many games, but the JBL Quantum 600 did sound decent enough when listening to music as well. The default tuning of the sound is its only real weakness, although this can be adjusted using the equaliser settings. That said, the excellent detail and wide, luxurious soundstage did make occasional music listening enjoyable on the JBL Quantum 600. I was able to use the headset for around 10 hours on a single charge with mixed usage and the RGB lighting on, including music, gaming, watching videos, and conference calls on the computer. This isn't a particularly good figure, but since these are largely meant for home use and can be plugged in and used without power, it's acceptable. Good overall sound on the JBL Quantum 600 The JBL Quantum 600 supports lossless 2.4GHz wireless with the included USB-A dongle. The dongle provides wireless support on PC and PlayStation, but the RGB, EQ, Mic settings and JBL sound enhancement features are only available on PC. While the Quantum 600 didn’t really give me anything to complain about, it’s definitely obvious what you’re getting into. JBL definitely has a specific kind of sound in its products, and the Quantum 600 is no exception with its slightly bassier, elevated lows and subdued highs. By no means did it ever actually sound bad; on the contrary, listening to music was downright fantastic. It’s just not really the sound signature I personally prefer.

Reminiscent of a car’s paint this adds a sweet quality feel to the whole headset. If I didn’t know better I would think it was actual lacquered paint; it feels sleek and polished and it looks fantastic. It’s a super unique touch to feature this style of paint/plastic. It shimmers slightly under light, reminding you that you are dealing with a decent piece of hardware made by a high-quality manufacturer.

Battery life is average on the JBL Quantum 600, with the headphones running for around 10 hours on a charge The audio mix balancer is an interesting option, since this lets you adjust the tuning depending on whether you want the headphones to focus on game audio or voice communication, or decide your own balance between the two. If you're using the headphones with a computer, you can also change this through the audio settings. Connect the JBL Quantum 600 wirelessly, or with a 3.5mm cable Wireless connectivity that is stable and free of any noticeable latency or sound quality issues is a big bonus as well, making this headset well suited for gamers who want to go cord-free. Battery life is the only area where the JBL Quantum 600 falls a bit short.

The outer sides of the ear cups have large JBL logos, which are illuminated with RGB LEDs. The lights are on by default when the headphones are switched on, and the colours and patterns can be customised using the JBL QuantumEngine app (available only for Windows here), which also lets you adjust equaliser settings.

When ‘wireless connectivity' is mentioned on a pair of headphones, it's usually assumed to be Bluetooth. However, Bluetooth has its weaknesses for gaming, primarily when it comes to latency. The typical delay in sound transmission can mean the difference between in-game life and death, so Bluetooth is usually avoided in favour of wired connections on gaming headphones. The JBL Quantum 600 does have a detachable 3.5mm cable for traditional wired connectivity, but the use of proprietary 2.4GHz wireless connectivity adds some utility for gaming while avoiding the latency issues of Bluetooth technology.