Field Test · Studio Gear Review
Superlux HD-330 Pro 32 Ohms
Test & review: Superlux
Superlux
- Studio Headphones
- Accessories & matching items
- 39Customer ratings
- Compare options
- Smart Navigator
Spec Sheet
- Circumaural
- Semi-open
- Dynamic
- Driver: 40 mm
- Neodymium magnets
- Max sound pressure level: 93 dB
- Impedance: 32 Ohm
- Frequency range: 10 – 30,000 Hz
- One-sided cable routing
- Flat 2.5 m long cable
- Weight: 315 g
- Includes adapter to 6.3 mm stereo jack
Studio Log
| Available since | December 2022 |
|---|---|
| Item number | 543232 |
| Sales Unit | 1 piece(s) |
| Design | Over-Ear |
| System | Semi Open |
| Impedance | 32 Ohms |
| Frequency range | 10 Hz – 30000 Hz |
| Adaptor | Yes |
| Replaceable Cable | No |
| Colour | Black |
| Max. SPL | 93 dB |
| Type Of Connector | Mini Jack |
| Weight | 315 g |
Demo Footage
Field Photography
QC Pass — Field Test
Customer Review Summary
[SUBTITLE]Technical evaluation of Superlux HD-330 Pro semi-open headphonesIntroduction
The Superlux HD-330 Pro are semi-open, circumaural headphones released in December 2022. Positioned at an accessible price point of £34, they aim to offer a sound experience comparable to some more expensive semi-open headphones. Their 40 mm dynamic drivers utilise neodymium magnets and operate at 32 Ohms impedance, making them easy to drive with consumer-grade devices.
Design and Build Quality
Designed as over-ear, semi-open headphones with a circumaural fit, the HD-330 Pro weigh 315 grams. The headphones feature a flat, 2.5-metre single-sided cable terminating in a mini jack with an included 6.3 mm adapter. Although the cable is flexible and durable enough to withstand office chair accidents, it is non-replaceable, which may be a drawback for longevity.
The outer ear cup grills are made of thin aluminium that can deform under pressure, suggesting care is needed to avoid damage. The metal framework connecting the ear cups to the headband appears thin but strong. All major parts are screwed together, indicating potential for repair if spare parts are available.
Comfort
The headphones ship with soft velour ear pads, which are praised for allowing long listening sessions without discomfort. Users report needing to adjust the metal headband using light bending to relieve pressure and improve sound seal, which affects bass response positively. After this custom fitting, the fit becomes secure without hindering height adjustment. However, the semi-open design limits external noise isolation.
Sound Performance
The HD-330 Pro cover an extended frequency range from 10 Hz to 30 kHz and reach a maximum sound pressure level of 93 dB SPL. Their sound signature can be described as balanced with a slight emphasis in the treble region, which some may find sharp or harsh out of the box.
The midrange reproduction is clear and accurate, delivering natural vocals and instrument tonalities such as trumpets and woodwinds with vivid detail. Bass is present but tends towards a more natural, restrained profile rather than exaggerated or boosted lows. This appeals to listeners preferring a more authentic sound rather than the “club bass” typical of some closed headphones. The bass extends well to lower frequencies, though it lacks the weight that bass enthusiasts might expect.
Treble peaks can be attenuated through equalisation, for example using a low-pass filter around 9 kHz, to reduce listening fatigue. Mid-bass can be subtly enhanced via EQ to suit personal preferences.
Soundstage and Detail
The semi-open architecture enables an open and transparent soundstage, offering good spatial perspective which benefits genres rich in acoustic instruments. Transient response is reported as precise, allowing crisp attack on percussion and detailed rhythmic clarity. The resulting audio is suitable for casual listening, gaming, and tracking, but not intended for critical mixing or mastering where linear frequency response is paramount.
Comparison and Usage
- Compared to more expensive Beyerdynamic models such as DT 990 Pro open headphones, the HD-330 Pro come close in layered details but do not fully match the refinement or comfort.
- Versus the Superlux HD-660 Pro, these offer better comfort over extended wear but slightly less bass presence.
- Low impedance enables easy driving from smartphones, laptops, and DACs without requiring an amplifier.
- Suited for home use, study sessions, or casual music enjoyment rather than professional studio mixing.
Criticism and Limitations
The fixed cable is a notable limitation because damage renders repair difficult and costly. Certain plastic components have sharp edges that require care during handling. Initial discomfort and weak bass if the headphones are worn unadjusted point to a need for user modification. The overall fragility of the grill and frame necessitates delicate handling.
Noise isolation is light, expected for a semi-open design, meaning the headphones are less suited for noisy environments.
Conclusion
For £34, the Superlux HD-330 Pro delivers exceptional value, combining a wide frequency response with clear mids and an open soundstage. The sonics are non-fatiguing after minor equalisation, and the wearer benefits from comfortable cushions suitable for hours of listening. While lacking detachable cables and professional-grade build refinements, these are compelling headphones for budget-conscious buyers seeking an accessible semi-open option that balances quality and affordability.
