Field Test · Studio Gear Review
Superlux HD-651 White
Technical assessment of Superlux’s budget-friendly HD-651 White model
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Spec Sheet
- Circumaural (full size)
- Closed back
- Dynamic
- Neodymium Magnet
- Peak SPL: 98 dB
- Impedance: 32 Ohm
- Frequency range: 20 – 20.000 Hz
- Max input power: 200 mW
- Cable length: 2 m
- 3,5 mm Stereo jack
- Weight with cable: 185 g
- Weight without cable: 149 g
- Colour: White
- Includes: Adapter with 6,3 mm Stereo jack
Studio Log
| Available since | December 2010 |
|---|---|
| Item number | 248145 |
| Sales Unit | 1 piece(s) |
| Design | Over-Ear |
| System | CLosed Back |
| Impedance | 32 Ohms |
| Frequency range | 20 Hz – 20000 Hz |
| Adapter | Yes |
| Replacable Cable | No |
| Marrone/Argento | White |
| Sensitivity | 98 dB |
| Type Of Connector | Mini Jack |
| Weight | 149 g |
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QC Pass — Field Test
Customer Review Summary
Introduction to Superlux HD-651 White
Released in December 2010, the Superlux HD-651 White is an over-ear, closed-back headphone marketed at a remarkably low price point of just £11.40. It features a circumaural design with a 32 Ohm impedance and a frequency response ranging from 20 Hz to 20,000 Hz. This model comes with a non-replaceable 2-metre cable terminating in a 3.5 mm stereo mini jack and includes a 6.3 mm stereo jack adapter. Weighing 149 grams without the cable, its plastic shell is finished in a clean white colour.
Design and Build Quality
The construction of the HD-651 White is predominantly plastic, a choice that keeps weight down but gives a less premium tactile experience. Despite this, the build is surprisingly sturdy for the price, with users consistently noting the headphone feels durable and unlikely to break under casual use. The headband is metal with a self-adjusting mechanism rather than a traditional adjustable slider, offering a one-size-fits-many approach. This design provides a snug fit but can cause discomfort on the top of the head after prolonged use due to firm pressure.
Ear cushions are circumaural, fully enclosing the ears, and offer decent noise isolation for a closed-back design. However, they are described as somewhat stiff, which may reduce comfort during extended listening sessions. The fixed cable length of 2 metres is practical for stationary use but restricts replacement options in case of cable failure.
Sound Performance
The HD-651 White delivers sound with a bass emphasis that some listeners find appealing. Deep bass and sub-bass frequencies are more prominent relative to the midrange and treble, leading to a warm tonal character. However, this bass boost comes at the expense of clarity and detail, especially in the mid and high frequencies. Users report that the mids are somewhat recessed, and the treble response is gently rolled off, resulting in a sound that lacks sparkle and can feel muffled or “boxed in.”
This sonic profile suits casual listening and tracking scenarios where bright or highly detailed sound is not critical. Several reports highlight its usefulness in recording vocals and instrument tracking, noting that it provides sufficient isolation and a bass-forward presentation that assists in hearing instrumental fundamentals. However, it falls short of the accuracy demanded by mixing or critical monitoring, where a flatter frequency response is crucial.
Frequency Range and Impedance
- Frequency response: 20 Hz to 20,000 Hz
- Impedance: 32 Ohms, making it compatible with most consumer devices without needing high power output
Comfort and Usability
The comfort experience with these headphones is mixed. The fixed headband exerts pressure on the top of the head, which some users describe as uncomfortable after about an hour of wear. The ear pads, while covering the ears fully, are somewhat stiff and do not provide the cushioning expected from higher-priced headphones. This reduces comfort for longer periods but remains acceptable for shorter use.
Fit can be an issue for users with larger heads, as the lack of traditional adjustment restricts flexibility. On the other hand, the self-adjusting headband means on-the-fly sizing without fiddling with sliders, simplifying wear for some users. The headphone’s light weight and cable length contribute to day-to-day convenience, though the non-detachable cable and mini-jack connector can limit versatility with some audio equipment.
Noise Isolation
The closed-back design and circumaural cups provide reasonable isolation from environmental noise, making these suitable in moderately loud settings. However, users report that they are not sufficiently isolating for very noisy environments or drumming applications where significant sound leakage occurs. For quiet spaces or tracking in small rooms, the isolation is adequate.
Summary and Recommendations
At its exceptionally low price, the Superlux HD-651 White offers notable strengths in durability, bass response, and noise isolation. However, compromises in sound accuracy, headband comfort, and build materials mean this headphone is best suited for entry-level users, casual listening, or recording sessions where multiple affordable sets are needed. It is not recommended for mixing, mastering, or critical listening environments.
For users seeking a budget option to supplement high-end headphones or for multi-person tracking sessions, the HD-651 White represents a cost-effective solution. Casual listeners who desire design appealing to younger users or a bass-forward profile may also find it satisfactory. Individuals with large heads or those prioritising comfort for prolonged wear should consider alternatives.
, the Superlux HD-651 White is a practical, inexpensive headphone that performs its basic role well within the confines of its price segment, but it cannot replace higher-tier products in demanding audio applications.
