Field Test · Studio Gear Review
Austrian Audio Hi-X25BT
In-depth technical review of Austrian Audio’s Hi-X25BT closed-back headphones
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Spec Sheet
- Closed back
- Circumaural
- Metal hinges and headband for maximum durability
- Foldable for easy transport
- Memory foam ear cushions for maximum comfort
- Bluetooth version: 5.0
- Operation: Touch control
- Various connection options: Analogue via jack, digital via USB-C and wireless via Bluetooth
- Battery type: Built-in lithium polymer rechargeable battery
- Operating time: Max. 30 hours
- Frequency range: 12 Hz – 24,000 Hz
- Sensitivity: 113 dB SPL/V
- Impedance: 25 ohm
- Max. input power: 150 mW
- Dimensions: 205 x 170 x 80 mm
- Weight (wihtout cable): 270 g
- Including 1.2 m USB-C cable with USB-C-USB-A adapter and 1.4 m USB-C to 3.5 mm jack cable with adapter to 6.3 mm jack
Studio Log
| Available since | August 2021 |
|---|---|
| Item number | 525459 |
| Sales Unit | 1 piece(s) |
| Design | Over-Ear |
| System | Closed Back |
| Impedance | 25 Ohms |
| Frequency range | 12 Hz – 24000 Hz |
| Adaptor | Yes |
| Replaceable Cable | Yes |
| Colour | Black |
| Max. SPL | 113 dB |
| Type Of Connector | USB-C |
| Adapter | Yes |
| Type Of Transmission | Bluetooth |
| Weight | 270 g |
| Maximum operating time | 30 h |
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QC Pass — Field Test
Customer Review Summary
Introduction
The Austrian Audio Hi-X25BT, released in August 2021 and priced around £122, is a closed-back, over-ear headphone designed for monitoring and general listening. Combining both wired and wireless functionality, it offers versatile connectivity options via USB-C, 3.5 mm jack and Bluetooth 5.0 transmission. This review assesses its build quality, comfort, sound performance and user experience based on technical specifications and extensive user reports.
Build Quality and Design
The Hi-X25BT sports a robust design featuring metal hinges and a headband, contributing to its durability. Weighing 270 grams without cables makes it lightweight enough for prolonged use. The circumaural ear cushions use memory foam, ensuring good comfort while providing a sealed fit, crucial for noise isolation in monitoring environments. The headphones are foldable, enhancing portability.
Included are two detachable cables: a 1.2 m USB-C cable with a USB-C to USB-A adapter and a 1.4 m USB-C to 3.5 mm jack cable with an additional adapter to 6.3 mm jack, ensuring compatibility across various devices. The aesthetic is predominantly black with a discreet but professional look and clear left/right markings on the ear cups.
Connectivity and Controls
Connectivity options cover analogue via 3.5 mm jack, digital USB-C and wireless Bluetooth 5.0. This versatility allows use with numerous devices from laptops, smartphones to digital audio interfaces. The Bluetooth implementation offers a reported operating range sufficient for normal listening environments without dropouts. However, audio codec support does not include aptX or other high-resolution codecs, which may limit sound quality in wireless mode for critical listeners.
The headphones employ touch controls on the right ear cup for playback and volume adjustments. User feedback consistently highlights challenges with this interface. The sensitivity of the touchpad often leads to accidental triggers such as playback pausing or track skipping. Moreover, locating the volume slider requires precision, and unintentional contact while moving or adjusting the headphones can disrupt the listening experience. Many users express a preference for physical buttons that provide tactile feedback and reduce mistaken inputs.
Sound Performance
The Hi-X25BT delivers a balanced, neutral sound profile tailored primarily for monitoring purposes rather than bass-heavy Hi-Fi listening. Its frequency response spans from 12 Hz to 24,000 Hz, with an impedance of 25 Ohms and a maximum SPL of 113 dB. Sensitivity is rated at 113 dB SPL/V, requiring reasonable volume output from connected sources.
Users describe the bass as present but not exaggerated, avoiding the overly boosted low end found in many consumer headphones targeted at casual listening. This restraint enables clear midrange reproduction, which is important for genres like rock and jazz where vocal and instrumental clarity is essential. High frequencies are smooth, avoiding harshness or sibilance, though some report the treble is slightly subdued above 10 kHz, affecting brilliance and openess.
Comparisons with competitors often note that the Hi-X25BT surpasses similarly priced models in sound clarity and neutrality. The headphones are reported to reveal mix details adeptly, making them suitable for home studio monitoring. However, the maximum output level is lower compared to other Hi-Fi headphones, which may be a limitation for some users seeking high volume levels.
Comfort and Fit
The memory foam ear pads and lightweight construction promote comfort for extended wear. While generally comfortable, several users indicate that heat can build up during long sessions, resulting in slight perspiration around the ears. The clamping force strikes a balance that prevents pressure points but provides sufficient passive noise isolation due to the closed-back design.
Some users with larger heads find the fit a bit loose and would appreciate softer or larger ear cushions for improved comfort. The headphones’ foldable design aids transport but the package includes only a soft pouch rather than a hard case, which might be a consideration for those requiring extra protection.
Battery Life and Additional Features
The internal rechargeable lithium polymer battery offers up to 30 hours of continuous use on a single charge. Users generally confirm this substantial battery life, suitable for daily activities without frequent recharging. Charging and wired connectivity via USB-C allow flexible usage scenarios.
While the integrated microphone performs adequately for calls and voice applications, it is limited to basic headset quality in Bluetooth mode and does not match dedicated microphone setups for professional applications.
Critiques and Considerations
- Touch controls: Frequent reports of accidental input and lack of customization lead to frustration. A physical control solution would enhance usability.
- Bluetooth codec limitations: Absence of aptX or LDAC reduces potential wireless audio fidelity.
- Fit and heat build-up: Comfort is generally good but could be improved especially for larger heads and summer use.
- Accessory package: Inclusion of a hard case instead of a pouch would better protect the headphones.
- Output level: Maximum volume is somewhat limited, which is consistent with the monitoring focus but may disappoint those seeking louder playback.
Conclusion
The Austrian Audio Hi-X25BT is a thoughtfully engineered headphone blending monitoring-grade audio neutrality with the convenience of wireless Bluetooth connectivity. Its sturdy construction, balanced sound signature and long battery life position it well for users needing a dual-purpose device for studio tasks and everyday listening.
Whilst the touch control interface and limited Bluetooth codec support present drawbacks, these are outweighed by the headphone’s clear, natural sound reproduction and comfort. It offers excellent value for its price point, especially for listeners who prioritise accuracy over artificially enhanced bass or treble.
This model is recommended for users seeking a solid closed-back monitoring headphone with wireless flexibility and a neutral tonal character, provided they are willing to acclimate to the touchpad’s sensitivity quirks.





















