Compare measured curves.
One tuning loads on top; pick the opponent with the search bar; the overlay and the shared-signal A/B live below once both are in.
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.
Start from any graph page: open a curve and press "⚖ Compare this curve" - it lands here loaded and ready.
search above and pick from the suggestions.
What a curve overlay shows
A frequency-response curve is the measurement that decides what a pair of headphones or in-ear monitors actually sounds like: how loud each frequency is played relative to the rest. Put two of them on one chart and the differences stop being adjectives. A shelf sitting 6 dB higher below 100 Hz is a bass lift; a spike near 5 kHz is the glare people call "bright"; a dip through the upper mids is the recession that makes vocals feel distant.
Two curves can only be compared honestly if they are level-matched first, because otherwise you are reading the measurement rig's loudness rather than the product's tuning. Every overlay here is aligned at the 200 Hz–1 kHz mean of each curve, then drawn on a logarithmic axis from 20 Hz to 10 kHz. The numbers on the axis are decibels relative to each curve's own midrange, not an absolute sound-pressure level, and the rig behind each measurement is credited on its card - a curve taken on a different coupler can differ by a decibel or two at the top end, which matters most when two products are close.
Where to start: open any graph, press the compare button, and pick the rival you were already considering. The overlay is the measurement; the shared-signal A/B player underneath demonstrates the difference without reviewing either product.
Browse every measured graph Compare whole products Find your tune