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Every review, buying guide, head-to-head comparison, tool, and glossary term - 455 entries in all. Type to filter instantly, or browse the full directory below.

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Headphone Power Calculator How much amplifier power your headphones need to hit a target listening level. Sensitivity (dB/mW or dB/V)…
Speaker Wattage Calculator How many watts your speakers need at the chair, from sensitivity, distance, room gain, and crest-factor…
Room Mode Calculator Map every standing wave resonance up to 300 Hz in rectangular, L-shaped, round, and arched-ceiling rooms…
Speaker Placement Calculator Enter the room and the layout and get the stereo triangle and toe-in, the bass dip each wall causes at your…
ABX Blind Test Eight built-in synthetic test pairs, no upload needed - or drag in two files of your own, DSD included…
EQ Ear Training Game Train your ears to identify frequencies from 20 Hz to 20 kHz, or only the range you can hear. Five training…
Hearing Frequency Test Find the highest tone you can hear in each ear and the lowest you hear through your headphones, with a slow…
Sound Signature Quiz A blind A/B preference test over royalty-free music. Pick by ear between more or less bass, mids, treble…
Help Me Choose: Audio Gear Finder Quiz Answer four quick questions - category, budget, sound preference, use case - for a ranked shortlist pulled…
Online Equalizer A 10-band graphic EQ you can hear in real time over royalty-free music or your own file. Watch the response…
Online Tone Generator Sine, square, triangle and sawtooth tones at any frequency or musical note, white, pink, brown, blue and…
Speaker & Headphone Test Check that left and right come from the correct side, that a pair of speakers is in phase, how low the bass…
Bass & Subwoofer Test Step a tone down from 200 Hz to 16 Hz, find the note where your bass fades out, set a subwoofer's phase by…
Mic Test Watch your microphone's level as you speak, then run a ten-second check for the noise floor, clipping, mains…
Decibel Meter Measure the sound level around you in dB(A) with your phone or laptop microphone: Fast or Slow, the average…
FLAC & Hi-Res Audio Checker Drop a file or a whole album and see each file's frequency content as an FFT spectrum: where it stops…
Safe Headphone Volume Calculator Enter your headphone sensitivity and volume setting to estimate the output SPL, the safe listening time at…
Bit Depth Calculator: Digital Volume Loss Find out how many bits of audio resolution you lose when lowering digital volume in Windows or macOS. Shows…
Speaker Wire Gauge Calculator Speaker cable resistance, system damping factor, and signal loss in dB for any gauge and length, and the…
Cable Capacitance Calculator The −3 dB treble roll-off a line-level run loses to cable capacitance, whether your phono cable stays inside…
SPL Distance Calculator The SPL at your listening distance from speaker sensitivity, amplifier wattage, and distance, with the…
Acoustic Panel Calculator Plot the absorption coefficient of any porous acoustic panel from 20 Hz to 8 kHz. Thickness, flow…
Online Tuner Tune a guitar, bass, ukulele, violin, viola or cello through your microphone: the string you played, how…

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