Short answer: a tie on sound quality. Both are rated 3.6/5 (#738 and #730 of 1291 in-ear headphones) at nearly the same price ($19.99 vs $20.99), so choose on features and fit.
What the SGOR Venus does well: A very cheap single dynamic IEM with treble right on the Harman target and full sub-bass to 20 Hz, scoring 69 across seven measurements. The catch: A 2.42 dB spread from the target shows peaks and dips that better tuned sets avoid.
What the TRN CS4 does well: A very cheap single dynamic in-ear with a 69 Harman preference score and full sub-bass extension down to 20 Hz. The tradeoff: Its score rests on three measurements.
Buy the SGOR Venus or the TRN CS4 on features: they are rated the same for sound quality at close to the same price.
Still deciding? The full Headphones rankings cover every ranked option.
A very cheap single dynamic IEM with treble right on the Harman target and full sub-bass to 20 Hz, scoring 69 across seven measurements.
Linsoul $19.99 eBay
A very cheap single dynamic in-ear with a 69 Harman preference score and full sub-bass extension down to 20 Hz.
Amazon $20.99 eBayPrices on this page were last checked October 16, 2026 at 5:46 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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Specifications Side By Side
| SGOR Venus | TRN CS4 | |
|---|---|---|
| Price | $19.99 | $20.99 |
| Ranked | #738 of 1291 in In-Ear Headphones | #730 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Dynamic |
| Drivers | 1 x dynamic | 1 x 10mm dynamic |
| Impedance | 32 ohms | - |
| Sensitivity | 110 dB +/-3 dB | 106 dB/mW |
| Harman Preference Score | 69 (median of 7 squig.link measurements, calibrated to AutoEQ) | 69 (median of 3 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.42 dB standard deviation | 2.25 dB standard deviation |
| Tonal Tilt | -0.33 (negative is warmer, positive brighter) | -0.49 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.3 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+0.9 dB at 30 Hz) |
Frequency Response Compared
Both headphones’ measurements overlaid on the Harman target. Above the target sounds louder in that range, below it quieter. Each curve is the median of several independent measurements, shifted so its 500 Hz to 2 kHz average sits at 0 dB, so only the tuning is compared.
Measurement data: the SGOR Venus from aftersound, ankramutt, audioamigo, fahryst, hbb, mmagtech and recode; the TRN CS4 from ankramutt, fahryst and ianfann, all via squig.link.
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