Cluster · Speakers & headphones

Audio tests.

Two instruments for sound going out. They tell you which channel is actually playing and what your ears do at a frequency you choose — with hearing-safety copy where it matters and no medical claims anywhere. Microphone input is a separate job and lives on its own test.

• Instrument

  Sound Test

  Left, right and both — the fastest way to find a dead channel or a swapped cable.

• Instrument

  Tone Generator

  A clean tone at a frequency you choose, for checking response and buzz.