Apps like Hifi-Apps Speaker Setup 2

Here are some great alternatives to Hifi-Apps Speaker Setup 2 by Dr. Johann Gaus :
Speaker Booster Black Edition
Speaker Booster Black Edition
★4.4
Speaker Booster Pro
Speaker Booster Pro
★4.3
Speaker Booster Pro
Speaker Booster Pro
★4.5
Speaker Booster
Speaker Booster
★4.3
Easy Speaker Booster
Easy Speaker Booster
★4.4
Speaker Booster Pro
Speaker Booster Pro
★4.0
Audio Test
Audio Test
★4.2
Easy Volume Booster
Easy Volume Booster
★4.2
Volume Booster & Sound Booster
Volume Booster & Sound Booster
★4.4
Volume Booster Pro
Volume Booster Pro
★4.4
Volume Booster Pro
Volume Booster Pro
★4.4
Sound Meter HQ PRO
Sound Meter HQ PRO
★4.5
Polarity Checker
Polarity Checker
★3.9
Speaker and Microphone Tester
Speaker and Microphone Tester
★3.3
Sound Level Meter
Sound Level Meter
★4.0
Sound Level Meter
Sound Level Meter
★4.0