Every tracked fact about the two, side by side - prices, history lows, ratings and measured tuning. No verdict: which one to buy is the visitor's decision, always.
Sony WF-1000XM4SonyNow ₹29,990 at The Revolver ClubLowest on record ₹18,490 on Wednesday, 7th Oct, 2026★★★★★ 4.6 4.6 · 161 reviewsFull prices & history
What is being compared
Both sides are in-ear monitors. The rows below are the facts each store publishes for this shelf - driver arrangement, impedance, sensitivity, plug and connectivity. A dash means the listing does not state that spec.
Spec7HzSony
Driver configurationDynamic (DD)—
Driver size10–12mm—
ConnectivityWiredTrue Wireless (TWS)
Measured tuning, side by side
Both curves are real community measurements (gold: 7Hz · blue: Sony). Each is level-aligned to its own 200 Hz–1 kHz mean, so rig offsets don't skew the comparison.
7HzSony
Average level per band, relative to that curve's own 200 Hz–1 kHz middle - a taller bar plays louder there on the measured files. Same colours as the chart above.
Wearing your own earphones or headphones? Pick them here and the player pre-corrects for their sound, so the demo plays the target tuning itself - not both mixed together.
Same signal through both tunings at once - slide to blend. Start on pink noise for the clearest read.
Tuning distance±1.48 dB RMS91% match - Very close. Computed on a shared 40-point log grid, 20 Hz–10 kHz. A measurement-space fact, not a promise two ears agree.
Bass · 20–250 Hz7Hz −0.2 dBAverage level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means 7Hz plays louder there on the measured files; minus means Sony does.
Mids · 250–2,000 Hz7Hz +0.8 dBAverage level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means 7Hz plays louder there on the measured files; minus means Sony does.
Treble · 2,000–10,000 Hz7Hz +1.7 dBAverage level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means 7Hz plays louder there on the measured files; minus means Sony does.
What a curve cannot seeBuild, driver QC unit-to-unit, comfort, isolation, accessories, warranty and resale value sit outside the graph - usually what the pricier one is charging for.
Price over the last 30 days
Daily lowest price across every tracked store, from the site's own price history. The line is one product's own range - the two cards are not drawn to a shared scale.
Sony WF-1000XM4Now ₹29,99062% above its 30-day medianLowest on record ₹18,490 on Wednesday, 7th Oct, 2026In stock at 1 tracked store
Price gap right now₹27,79093% of the dearer one's price.
Stores with it in stock1 vs 1Active stores carrying each one right now - more stores usually means easier replacement and a steadier price.
The decision, factually
Cheaper right now7Hz Salnotes Zero HiFi 10mm Dynamic Driver In Ear Earphone IEM - WhiteLowest current price across all tracked stores - ₹2,200 vs ₹29,990.
Deepest discount ever seen7Hz Salnotes Zero HiFi 10mm Dynamic Driver In Ear Earphone IEM - WhiteFrom each product's own recorded price history.
This page reports facts and expresses no opinion on which to purchase.
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7Hz Salnotes Zero HiFi 10mm Dynamic Driver In Ear Earphone IEM - White
7Hz
At its lowest recorded price
★★★★★ 4.8 4.8 · 13 reviews
Full prices & history
Sony WF-1000XM4
Sony
Lowest on record ₹18,490 on Wednesday, 7th Oct, 2026
★★★★★ 4.6 4.6 · 161 reviews
Full prices & history