The ROG Delta II is a premium wireless gaming headset that delivers where it matters most: comfort, audio quality, battery life and versatility. Designed for gamers who switch between PC, Playstation, mobile devices and other platforms, the ROG Delta II combines tri-mode connectivity with impressive sound. 

Design and Comfort

The Delta II keeps ROG’s recognizable D-shaped earcup design, now with a new metal hinge and smoother. At 318 grams, it’s a lightweight headset for what it packs in, and the D-shaped cups are designed to reduce unnecessary contact with your ears for a snugger fit. It even includes two full sets of ear cushions of varying material to suit your preference.

Sound

At the heart of the ROG Delta II are custom 50 mm titanium-plated diaphragm drivers that produce detailed, well-balanced sound with excellent separation across the frequency range. Explosions have satisfying impact, footsteps remain easy to pinpoint in competitive shooters, and dialogue comes through with clarity. With virtual 7.1 surround sound, it also enhances positional and spatial audio to make gaming, music and movie experiences incredibly phenomenal.

DualFlow Audio and Controls

The defining feature of the Delta II is DualFlow Audio technology. Instead of just letting you switch between connections, the headset allows for simultaneous audio playback from two distinct sources. It even allows you to answer mobile calls, by the press of a button. Each earcup has its own scroll wheel, so you can independently control the volume of the 2.4GHz and Bluetooth sources at the same time, and a function button on the earcup handles play/pause, track skipping, answering calls, and toggling RGB. 

Microphone

The 10mm detachable boom mic is one of the most consistently praised parts of this headset. Designed with a wider frequency range specifically to avoid peaking and distortion, it keeps your natural vocal cadence intact and avoids clipping when your voice elevates during intense gameplay. The mic records an impressive MOS-LQO (Mean Opinion Score) of 4.2 in certified lab testing (comfortably exceeding standard communication platform benchmarks).

Connectivity and Battery

One of the Delta II’s biggest strengths is its flexibility. It supports:

• 2.4 GHz wireless via ROG SpeedNova technology
• Bluetooth
• Wired 3.5 mm connectivity

The headset works seamlessly across PCs, PlayStation consoles, Nintendo Switch, smartphones, tablets, and other compatible devices. Xbox users can still connect through the 3.5 mm cable, although wireless functionality is not supported on Xbox consoles.

With RGB lighting disabled, ASUS rates the Delta II for up to 110 hours of battery life in 2.4 GHz wireless mode, placing it among the longest-lasting premium wireless gaming headsets available.

Even with RGB lighting enabled, users can still expect several days of regular gaming between charges. Fast charging is also supported, providing hours of gameplay from a short charging session.

Pros:

– DualFlow Audio — no more pausing games for calls or juggling two devices

– clear excellent microphone quality

– optimised power efficiency (with up to 110–140 hours depending on mode)

– comfortable, lightweight build with two swappable cushion types

– true tri-mode connectivity covering PC, consoles, and mobile (Xbox via wired only)

– EQ customization via Armoury Crate

Cons:

– sound signature can vary noticeably between wired and wireless modes

Conclusion

The ASUS ROG Delta II is one of ASUS’ strongest gaming headsets to date. It combines excellent audio quality, exceptional battery life, lightweight comfort, versatile tri-mode connectivity, and genuinely useful DualFlow Audio into a polished premium package. It is best suited to gamers who genuinely juggle calls, media, and game audio throughout the day.