Want to test the bass of your speakers or headphones?

From the frequency of 20 Hz to 70 Hz in steps of 5 (20 Hz, 25 Hz, 30 Hz, 35 Hz, 40 Hz, 45 Hz, 50 Hz, 55 Hz, 60 Hz, 65 Hz and 70 Hz).

Frequencies are in waveform: Sine.

Ideal for testing woofers.

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