Sharp Big Bang Super Loud Alarm Clock vs Sonic Alert Sonic Boom SB1000 Alarm Clock

Buy the Sharp Big Bang if you need a very loud audible alarm and want two independent alarms with a custom snooze. Buy the Sonic Alert Sonic Boom if you sleep through sound or are deaf or hard of hearing, because its bed shaker wakes you by vibration and it can drive a bedroom lamp. The Sharp is a plastic battery-backed plug-in clock with a 115 dB siren and six wake sounds; the Sonic Boom is heavier, has a vibration strength dial and adjustable alarm duration, and owners of both praise reliability, though the Sonic Boom's shaker and lamp relay are the real difference.

• Choose the Sharp Big Bang if you want the loudest possible sound alarm with two separate wake times and a snooze you set yourself.
• Choose the Sonic Alert Sonic Boom if sound alone does not wake you and you want a vibrating bed shaker plus a lamp connection.