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
★4.5
Speaker Booster Pro
Speaker Booster Pro
★4.3
Speaker Booster
Speaker Booster
★4.3
Easy Speaker Booster
Easy Speaker Booster
★4.4
Audio Test
Audio Test
★4.2
Speaker Booster Pro
Speaker Booster Pro
★4.0
Easy Volume Booster
Easy Volume Booster
★4.1
Volume Booster Pro
Volume Booster Pro
★4.4
Volume Booster Pro
Volume Booster Pro
★4.4
Polarity Checker
Polarity Checker
★3.9
Sound Meter HQ PRO
Sound Meter HQ PRO
★4.4
Clear Speaker - Clean Speakers
Clear Speaker - Clean Speakers
★4.6
Sound Level Meter
Sound Level Meter
★4.0
Live Microphone to Speaker
Live Microphone to Speaker
★4.0
Sound Level Meter
Sound Level Meter
★4.0