Sharp Big Bang Super Loud Alarm Clock vs Sonic Alert Sonic Bomb Alarm Clock

Buy the Sonic Bomb if you sleep through sound alone or have hearing loss: the 12-volt bed shaker and flashing red lights wake you without relying on noise. Buy the Sharp Big Bang if you want the loudest possible sound and a simple plug-in clock with a battery backup for outages. The Sonic Bomb has the stronger hardware and a one-year warranty; the Sharp wins on raw volume and six selectable wake sounds. Owners of both report the alarms are genuinely loud, but the Sonic Bomb's shaker is the feature heavy sleepers mention most.

• Choose the Sharp Big Bang if you want the loudest alarm sound, six distinct wake tones and a custom snooze you set yourself.
• Choose the Sonic Bomb if you need a vibrating bed shaker and flashing lights, not just sound, to get up.