Coverage note. Speaker Ranking currently covers 2 Superlux models across headphones. These are the products in our database, not a complete list of everything Superlux makes.
What this page covers. The Superlux models ranked here span headphones, including Superlux HD 660 Pro 150 Ohm and Superlux HD 681. Use each model’s category position to compare it with alternatives of the same size and use case.
This page lists all 2 Superlux speakers ranked on this site across headphones. Each model is shown in the category where it competes, with its current rank and the size of that ranking.
Use the category position rather than the brand name alone: speakers from the same manufacturer can perform very differently by size, price and product family.
Prices on this page were last checked October 10, 2026 at 5:37 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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Over-Ear Headphones
Ranked #54 of 201 in Over-Ear Headphones - Superlux HD 660 Pro 150 Ohm: $34 Thomann eBay
Pros: A preference score of 83 in oratory1990’s measurement is remarkable for a budget headphone, with sub-bass and bass about 1 dB above target down to 20 Hz for a full, punchy low end. It rates well above the Koss KPH30i and the AKG K240 Studio. The closed back isolates outside noise, suiting tracking and commuting.
Cons: A 6.1 dB peak near 6.4 kHz can make sibilance and cymbals splashy, and a 7.2 dB dip near 9.4 kHz follows it, so the treble sounds uneven. The 150 ohm impedance means some phones will run out of volume, and at 323 g it is not light.
Full Superlux HD 660 Pro 150 Ohm review and specifications →
| Back | Closed |
|---|---|
| Built-in Microphone | No |
| Connection | Wired |
| Deviation From Target | 2.24 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 40mm dynamic |
| Form Factor | Over-ear |
| Frequency Response | 10Hz - 30kHz (Manufacturer specified) |
| Harman Preference Score | 83 (measured by oratory1990, via AutoEQ) |
| Impedance | 150 ohms |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+1.2 dB at 30 Hz) |
| Tonal Tilt | -0.22 (negative is warmer, positive brighter) |
| Weight | 0.7 lbs (323 g) |
EQ preset to match the Harman target
Set a preamp of -3.7 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by AutoEQ from its measured frequency response.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +2.1 dB | 0.70 |
| Peak | 2,024 Hz | -3.9 dB | 3.50 |
| Peak | 52 Hz | -5.2 dB | 1.11 |
| Peak | 144 Hz | -4.3 dB | 4.46 |
| Peak | 104 Hz | +2.9 dB | 3.92 |
| High shelf | 10,000 Hz | -2.8 dB | 0.70 |
| Peak | 6,206 Hz | -8.9 dB | 5.22 |
| Peak | 5,370 Hz | +3.7 dB | 1.39 |
| Peak | 532 Hz | +3.7 dB | 4.78 |
| Peak | 224 Hz | +2.4 dB | 4.96 |
- Reviews, Comparisons and Sound Samples
Ranked #150 of 201 in Over-Ear Headphones - Superlux HD 681: $33.29 B&H Photo Video eBay
Pros: A very low price and a 32 ohm, 98 dB/mW load make it an easy pick for use straight from a phone or laptop. From the upper midrange through the air band its response stays within 2 dB of target on average, which suits listeners who like a bright or studio-flat balance. It rates higher than the Koss KPH40 at a similar price.
Cons: Sub-bass sits 9.7 dB below target in oratory1990’s measurement and falls 6 dB short by 42 Hz, so bass sounds thin and lacks impact. A 5.7 dB peak at 4.8 kHz right next to a 5.1 dB dip at 4.1 kHz can make vocals and guitars edgy, and the semi-open back lets some sound escape. The AKG K240 Studio and HyperX Cloud Alpha rate higher for a little more money.
Full Superlux HD 681 review and specifications →
| Back | Semi-open |
|---|---|
| Built-in Microphone | No |
| Connection | Wired |
| Deviation From Target | 2.58 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 50mm dynamic |
| Form Factor | Over-ear |
| Frequency Response | 10Hz - 30kHz (Manufacturer specified) |
| Harman Preference Score | 61 (measured by oratory1990, via AutoEQ) |
| Impedance | 32 ohms |
| Sensitivity | 98 dB/mW |
| Sub-bass Extension | Falls 6 dB below target at 42 Hz (-9.8 dB at 30 Hz) |
| Tonal Tilt | +1.34 (negative is warmer, positive brighter) |
| Weight | 0.5 lbs (230 g) |
EQ preset to match the Harman target
Set a preamp of -5.8 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by AutoEQ from its measured frequency response.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +5.8 dB | 0.70 |
| Peak | 496 Hz | +2.4 dB | 1.05 |
| Peak | 1,105 Hz | -1.8 dB | 0.57 |
| Peak | 5,194 Hz | -6.1 dB | 4.12 |
| Peak | 174 Hz | +1.0 dB | 1.11 |
| High shelf | 10,000 Hz | -3.2 dB | 0.70 |
| Peak | 7,758 Hz | -2.3 dB | 3.68 |
| Peak | 3,826 Hz | +3.2 dB | 5.94 |
| Peak | 2,458 Hz | -1.4 dB | 3.46 |
| Peak | 65 Hz | -0.5 dB | 2.20 |
- Reviews, Comparisons and Sound Samples