Short answer: the Simgot EA500 DSP. Both are rated 4.4/5 for sound quality (#180 and #130 of 1291 in-ear headphones), and the Simgot EA500 DSP costs $90.99 against $99 for the 7Hz Salnotes Dioko, and with sound quality even, the cheaper one is the better buy.
What the 7Hz Salnotes Dioko does well: A preference score of 79 in oratory1990’s measurement, with bass and mids from 20 Hz to 3 kHz held within about 1.4 dB of target, so the low end is full and extends deep. The catch: Air above 10 kHz rises 7.1 dB over target with a 5.6 dB peak near 11.9 kHz, which can make cymbals and hi-hats sound splashy.
Why pick the Simgot EA500 DSP: Hobbyist measurements give it a Harman preference score of 78.3 with 1.5 dB of deviation, and the range from 20 Hz to 3 kHz stays within about 1 dB of target, so bass, vocals and instruments sound natural and well proportioned. The tradeoff: The presence and treble bands sit about 2.3 to 3.1 dB below target with a 5.7 dB dip near 10 kHz, so cymbals and fine detail come across a little subdued.
Buy the Simgot EA500 DSP. Both are rated the same for sound quality, and it costs $8.01 less than the 7Hz Salnotes Dioko.
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A preference score of 79 in oratory1990’s measurement, with bass and mids from 20 Hz to 3 kHz held within about 1.4 dB of target, so the low end is full and extends deep.
Linsoul $99.00 eBay
Hobbyist measurements give it a Harman preference score of 78.3 with 1.5 dB of deviation, and the range from 20 Hz to 3 kHz stays within about 1 dB of target, so bass, vocals and instruments sound natural and well proportioned.
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Specifications Side By Side
| 7Hz Salnotes Dioko | Simgot EA500 DSP | |
|---|---|---|
| Price | $99.00 | $90.99 |
| Ranked | #130 of 1291 in In-Ear Headphones | #180 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 79 (measured by oratory1990, via AutoEQ) | 78 (median of 2 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.85 dB standard deviation | 1.51 dB standard deviation |
| Tonal Tilt | -0.01 (negative is warmer, positive brighter) | -0.40 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.9 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-0.1 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Planar magnetic | Dynamic |
| Drivers | 1 x 14.6mm planar magnetic | 1 x 10mm dynamic |
| Impedance | 16 ohms | 16 ohms |
| Sensitivity | 106 dB SPL/V | 123 dB/Vrms |
| Frequency Response | 5Hz - 40kHz (Manufacturer specified) | 10Hz - 50kHz (Manufacturer specified) |
| Built-in Microphone | No | - |
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