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.
Both sides are headphones. The rows below are the facts each store publishes for this shelf - driver setup, impedance, sensitivity, back design and connectivity. A dash means the listing does not state that spec.
SpecSuperlux HD681Sonos Ace Wireless
Sensitivity98dB—
ConnectivityWired—
Plug3.5mm—
Measured tuning, side by side
Both curves are real community measurements (gold: Superlux HD681 · blue: Sonos Ace Wireless). Each is level-aligned to its own 200 Hz–1 kHz mean, so rig offsets don't skew the comparison.
Superlux HD681Sonos Ace Wireless
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±2.46 dB RMS85% 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 HzSuperlux HD681 −1.1 dBAverage level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means Superlux HD681 plays louder there on the measured files; minus means Sonos Ace Wireless does.
Mids · 250–2,000 HzSuperlux HD681 +0.6 dBAverage level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means Superlux HD681 plays louder there on the measured files; minus means Sonos Ace Wireless does.
Treble · 2,000–10,000 HzSuperlux HD681 −2.3 dBAverage level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means Superlux HD681 plays louder there on the measured files; minus means Sonos Ace Wireless 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.
Superlux HD681Now ₹4,500at its 30-day medianLowest on record ₹3,814 on Wednesday, 4th Nov, 2026In stock at 1 tracked store
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Sonos Ace Wireless Noise-Canceling Over-Ear Headphones (Soft White)
Sonos
At its lowest recorded price
Full prices & history