Testing My Headphones & Speakers

0:00 - 0:04, Testing left and right channels (left then right. If vice versa, speakers are connected backwards or your headphones are on backwards);

0:04 - 0:12, Testing ultra-sub frequency (if nothing is heard, the device can't dive down to 40Hz. It's normal if nothing is heard from your home speakers, musicians can use it to test the 20-40Hz ultra-sub frequency performance of their stage speakers);

0:12 - 0:20, Testing sub frequency (if nothing is heard, the device can't dive down to 80Hz);

0:20 - 0:36, Testing midrange (trust your subjective perception);

0:36 - 0:52, Testing high frequency (trust your subjective perception);

0:52 - 1:24, Testing low frequency (trust your subjective perception);

1:24 - 1:40, Testing midrange spatiality (trust your subjective perception);

1:40 - 1:56, Testing high frequency spatiality (trust your subjective perception);

1:56 - 2:12, Testing low frequency spatiality (trust your subjective perception);

2:12 - 2:20, A 440Hz sine wave just slightly away from distortion (if there is distortion, midrange tuning is too aggressive);

2:20 - 2:28, A 7040Hz sine wave just slightly away from distortion (if there is distortion, high frequency tuning is too aggressive. This section can be extremely piercing, but may not technically be distortion);

2:28 - 2:36, A 110Hz sine wave just slightly away from distortion (if there is distortion, low frequency tuning is too aggressive);

2:36 - 3:00, listen as a whole (trust your subjective perception).