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Asus ROG Delta II-KJP specifications and in-depth review

Asus ROG Delta II-KJP

Manufacturer: Asus

The Asus ROG Delta II-KJP is an over-ear gaming headset built for PC, PlayStation, and Nintendo Switch users who want flexible connectivity without sacrificing comfort. It features RGB lighting and a detachable cable, giving users the option to go wired or wireless depending on their setup. The headset weighs 325 g and includes a tangle-free cable, making it reasonably straightforward to manage whether at a desk or on the move.

On the technical side, the ROG Delta II-KJP supports three connection methods — 3.5mm, 2.4GHz wireless, and Bluetooth — with a maximum Bluetooth range of 10 meters. Its two 50mm drivers cover a frequency range of 20 Hz to 20,000 Hz at a 32 Ohm impedance, and the headset delivers passive noise reduction through its closed-back design. Power comes from a built-in 1,800 mAh rechargeable battery rated for up to 140 hours of use, with a charge time of 3 hours and a battery level indicator included. A removable microphone with a sensitivity of -40dBV/Pa and a frequency range of 100 Hz to 10,000 Hz rounds out the feature set, alongside a USB Type-C port for charging.

Pros
  • The 140-hour battery life means extended use between charges is very practical for long gaming sessions
  • Three connection options — 3.5mm, 2.4GHz wireless, and Bluetooth — give meaningful flexibility across different setups
  • The removable microphone allows the headset to function cleanly as headphones-only when communication is not needed
  • A battery level indicator helps users manage charge without being caught off guard
  • The detachable, tangle-free cable reduces the hassle of cord management when switching to wired use
  • On-device controls keep adjustments accessible without relying on an in-line remote
Cons
  • No active noise cancellation means the headset relies solely on passive isolation to block out ambient sound
  • The microphone lacks a mute function, requiring users to handle muting through external software or platform settings
  • Bluetooth audio is limited as no codecs such as AAC, aptX, or LDAC are supported, which restricts wireless audio quality options
  • Surround sound and spatial audio are not supported, limiting the immersive audio experience for gaming
  • The microphone has no noise-canceling capability, so background sound will be picked up during calls or voice chat
Who is this for?

This headset is a solid fit for gamers who want flexible multi-platform use, given its compatibility with PC, PlayStation, and Nintendo Switch across three connection types. The 140-hour battery life makes it well suited to users who prefer long, uninterrupted sessions without frequent recharging, and the removable microphone adds versatility for those who want to switch between communication and passive listening. The on-device control panel and tangle-free detachable cable also make it a practical choice for desktop setups where convenience and tidiness matter.

Who is this NOT for?

Users who need high-fidelity wireless audio will find this headset limiting, as Bluetooth output lacks support for any advanced codecs including AAC, aptX, or LDAC. Those who prioritize immersive gaming audio will also be disappointed, as there is no surround sound or spatial audio processing of any kind. Additionally, content creators or streamers who rely on clean voice capture may find the microphone insufficient, given that it offers no noise cancellation and no built-in mute function, making it harder to control audio quality in noisy environments.

Design:

Fit Over-ear
has a detachable cable ✓
weight 325 g
has RGB lighting ✓
has an open-back design ✕
has a tangle free cable ✓
has stereo speakers ✓

The Asus ROG Delta II-KJP uses an over-ear fit and weighs 325 g, offering a closed-back design that contributes to its passive noise isolation. It comes equipped with a detachable, tangle-free cable, giving users the flexibility to switch between wired and wireless use without dealing with cord management issues. The headset also features stereo speakers and RGB lighting, rounding out a design that balances practical cable handling with visual customization.

Sound quality:

lowest frequency 20 Hz
highest frequency 20000 Hz
has active noise cancellation (ANC) ✕
Surround sound None
supports spatial audio ✕
driver unit size 50 mm
impedance 32 Ohms
has a neodymium magnet ✕
has passive noise reduction ✓
drivers count 2

The Asus ROG Delta II-KJP uses two 50mm drivers to cover a frequency range of 20 Hz to 20,000 Hz, operating at an impedance of 32 Ohms. The headset provides passive noise reduction through its closed-back construction, though it does not include active noise cancellation, surround sound, or spatial audio support. Neodymium magnets are not part of the driver configuration, and the sound presentation is strictly stereo with no virtual surround processing on offer.

Microphone:

has a noise-canceling microphone ✕
lowest mic frequency 100 Hz
highest mic frequency 10000 Hz
has a removable microphone ✓
has a mute function ✕
mic sensitivity -40dBV/Pa
number of microphones 1

The Asus ROG Delta II-KJP includes a single removable microphone with a sensitivity of -40dBV/Pa and a frequency response ranging from 100 Hz to 10,000 Hz. The mic does not feature noise cancellation, so it captures audio without any active filtering of background sound. There is also no mute function built in, meaning users would need to manage audio input through software or their platform's own controls.

Power:

Battery life 140 hours
charge time 3 hours
battery power 1800 mAh
has a rechargeable battery ✓
has a battery level indicator ✓
has a removable battery ✕

The Asus ROG Delta II-KJP is powered by a built-in 1,800 mAh rechargeable battery rated for up to 140 hours of battery life, with a full charge taking approximately 3 hours. The battery is not removable, so recharging is done directly through the headset. A battery level indicator is included, allowing users to keep track of remaining charge without guessing.

Connectivity:

connectivity 3.5mm, 2.4GHz wireless, Bluetooth
compatibility PC, PlayStation, Nintendo Switch
Can be used wirelessly ✓
Has USB Type-C ✓
has aptX Adaptive ✕
has aptX Low Latency ✕
has LDAC ✕
has LDHC ✕
has Bluetooth LE Audio ✕
has aptX HD ✕
has aptX ✕
has Auracast ✕
has AAC ✕
maximum Bluetooth range 10 m
supports Bluetooth pairing using NFC ✕
has fast pairing ✕

The Asus ROG Delta II-KJP supports three connection options — 3.5mm, 2.4GHz wireless, and Bluetooth — and is compatible with PC, PlayStation, and Nintendo Switch. It includes a USB Type-C port and offers a maximum Bluetooth range of 10 meters. On the Bluetooth side, the headset does not support advanced audio codecs such as aptX, aptX HD, aptX Adaptive, aptX Low Latency, LDAC, LDHC, or AAC, and it also lacks Bluetooth LE Audio and Auracast. Convenience features like NFC pairing and fast pairing are not available either.

Features:

control panel placed on a device ✓
can be used as a headset ✓
has a vibration function ✕
Has an in-line control panel ✕
travel bag is included ✕

The Asus ROG Delta II-KJP can be used as a headset and features a control panel placed directly on the device, keeping adjustments within easy reach without the need for an in-line control panel, which is not included. The headset does not offer a vibration function, and no travel bag is bundled in the package.

Final Verdict

The Asus ROG Delta II-KJP is a multi-platform gaming headset that makes a reasonable case for itself through its broad connectivity options and an exceptionally long 140-hour battery life, which stands out as its most practical advantage for day-to-day use. The combination of 3.5mm, 2.4GHz wireless, and Bluetooth support, alongside compatibility with PC, PlayStation, and Nintendo Switch, gives it genuine versatility across different gaming setups. However, users with more demanding audio expectations — particularly those who value advanced wireless codecs, immersive spatial sound, or a capable microphone setup — will find the feature set falls short in those areas. For gamers who prioritize runtime, flexibility, and straightforward usability over audiophile-grade performance, the ROG Delta II-KJP is a practical and focused option within its category.