Superlux Audio Superlux HD 668B Headphones

$28.00 to $39.94 Price Tier: Budget

4.0 (11)

1 Critic Review

1 Review

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Page last updated Jul 01, 2026

Pricing and availability

We compare 600+ stores and found this item at 2 stores. Prices updated May 7, 2026.

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Price

$39.94

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4.4 (1417)

$28.00

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Average Price: $26

Budget/Beginner

$100

$301+

Price Tier

In the Headphones & In-Ear Monitors category, Superlux HD 668B Headphones is priced in the Budget/Beginner range. This is great gear to get started with or for creators on a budget.

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Price History

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Description

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Immerse yourself in sound with the Superlux HD 668B Headphones, a perfect blend of comfort and quality for musicians and audiophiles alike. These dynamic, semi-open headphones are designed to offer a natural listening experience that effortlessly bridges the gap between studio precision and everyday enjoyment. Whether you're mixing tracks in the studio or enjoying your favorite playlist at home, the HD 668B delivers consistent performance with its broad frequency range of 10 - 30,000 Hz.

The circumaural design ensures full ear coverage, providing excellent sound isolation and a comfortable fit for extended sessions. Thanks to the self-adjusting headband, these headphones adapt to your head shape for a personalized fit that's both secure and comfortable. With a peak SPL of 98 dB and an impedance of 56 Ohm, they offer powerful, distortion-free sound, even at higher volumes.

For added convenience, the HD 668B features a detachable cable system that includes both 1 m and 3 m cables, complete with a 3.5 mm stereo jack. This modular design allows you to easily switch cables based on your needs, making these headphones a versatile choice for any setting.

Key Features:

Circumaural, semi-open design for natural sound
Dynamic drivers with a frequency range of 10 - 30,000 Hz
Self-adjusting headband for personalized comfort
Peak SPL: 98 dB; Impedance: 56 Ohm
Power capacity: 300 mW
Detachable cable system with 1 m and 3 m cables
Includes 6.3 mm stereo jack adaptor and carrying bag

Product specs

Available since	March 2010
Design	Over-Ear
System	Semi Open
Impedance	56 Ohms
Frequency range	10 Hz – 30000 Hz
Adaptor	Yes
Replaceable Cable	Yes
Colour	Black
Max. SPL	98 dB
Type Of Connector	Mini Jack
Weight	228 g

FAQs

What is the design type of the Superlux HD 668B headphones?: The Superlux HD 668B headphones feature an over-ear, semi-open design, providing a balance between open and closed-back headphones, which allows for a natural sound with some noise isolation.
Are the cables on the Superlux HD 668B headphones replaceable?: Yes, the Superlux HD 668B headphones come with replaceable cables, allowing for easy maintenance and potential upgrades.
What is the frequency response range of the Superlux HD 668B headphones?: The Superlux HD 668B headphones have a frequency response range of 10 Hz to 30 kHz, offering a wide spectrum of audio reproduction from deep bass to clear highs.
Is the Superlux HD 668B suitable for use with smartphones?: With an impedance of 56 Ohms, the Superlux HD 668B can be driven by smartphones, although an amplifier may enhance performance for optimal sound quality.
What type of connector do the Superlux HD 668B headphones use?: The Superlux HD 668B headphones use a mini jack connector, making them compatible with a wide range of audio devices.

Videos

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Gamesky

AUDIOPHILE QUALITY FOR $50! : Superlux HD668B Headphones

Gamesky

Best Studio Headphones Under $40 or $50 - Superlux HD 668B Review

Audio46 Headphones - Headphone Superstore

Superlux HD668B Review - The Best Budget Headphones?

Stephen Potter

Superlux HD 668B Sound Demo Review

Tech Room

Superlux HD 668b Review - Reference Grade Headphones on a Budget

Taylord Tech

Reviews

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PROS

Exceptional value for the price
Good sound quality, especially after break-in period
Semi-open design offers a 'fun' listening experience
Different length cables and carrying pouch included
Can sound impressive with certain audio setups
Slightly better comfort than other budget models
Improved bass and realistic highs after burn-in
Less compressed sound stage

CONS

Poor build quality, especially cable durability
Original pads can cause discomfort and sweating
Bulky design, not suitable for on-the-go use
Sound bleed due to semi-open design
Tight fit can cause ear pain during long sessions
Thin and fragile cables prone to breaking
All-plastic design feels cheap

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Superlux HD 668B Headphones.

Build quality

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The 3.5mm connector on the left earcup is seen as a weak point, but some owners report no issues after 4-5 years of use.
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Mods and upgrades

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Owners recommend AKG K240 earpads for improved comfort, though these haven't been personally tested by all reviewers.
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The "toilet paper mod" using 1-2 ply is suggested to mitigate sibilance issues, altering the frequency response.
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Brainwavz XL hybrid pads are recommended for enhancing comfort, addressing the discomfort from the stock pads.
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User experience

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The clamping force is initially high but loosens after two weeks if left stretched on a support.
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Some find the stock pads uncomfortable as they are shallow, causing ears to touch the fabric over the driver.
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Some owners find the HD668B's open-back design effectively overshadows minor ambient noise like PC fans during playback.
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Users transitioning from closed-back to open-back headphones like the HD668B often note a preference for the "intimacy" of closed-back sound due to better isolation.
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The HD668B is noted for its tight and clear timbre, reminiscent of the DT1990 with EQ, offering distinct macro detail.
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Comparisons

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The Superlux HD 668B is likened to the Samson SR850 in style, with the latter potentially offering more comfort.
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The HD668B's semi-open design offers a larger soundstage compared to the HD669, which provides better passive isolation due to its closed-back design.
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Users highlight the HD668B's superior separation and clarity over the AKG K240, especially for non-orchestral music, making it preferable for detailed listening.
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Features and functionality

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The HD668B is noted for a slight bass hump and recessed mids, with a "honky" treble, while the HD669 has less bass but more forward mids.
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The HD668B provides impactful and controlled bass, performing well in genres like EDM, where the K240 struggles with distortion.
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Use cases and applications

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While suitable for gaming, the HD668B's soundstage and imaging are less favorable compared to the K240, which offers better comfort and spatial accuracy for this purpose.
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Value and pricing

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Owners express amazement at the HD668B's performance for its price, suggesting it as a go-to recommendation for those new to headphones or on a budget.
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Critic Reviews

Superlux HD 668B Review - RTINGS.com

rtings.com

The Superlux HD 668B headphones deliver impressive sound quality at an affordable price, making them a great option for critical listening on a budget. They offer a balanced audio profile with satisfying bass and clear mids, although the treble can be sharp on brighter tracks. However, their semi-open design leads to significant sound leakage and poor noise isolation, making them less suitable for commuting or office environments. Additionally, the plasticky build and tight fit may not be comfortable for everyone during extended use. Despite these drawbacks, for pure sound quality, they are hard to beat at this price point.

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Based on 1 Review and 11 Ratings

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