音量放大器 - 均衡你的音乐, 3d播放器

Sound Amplifier is a powerful app to increase the volume of your audio file or your favorite video files!
Are you unsatisfied about current low-quality audio? Do you want to adjust the bass volume of your favorite video? Our app will help you quickly and easily!
Boost the volume of your files up to 1000%, making the amazing hearing amplify of your device!
Select a file, choose the the desired volume level, and the sounds of your device will have volume.
Subscription Terms:
Subscribe to get unrestricted access to all the features outlined above.
• 1-month Subscription: $7.99
• 1-year Subscription: $29.99
• Lifetime Subscription: $39.99
• Subscription with a free trial will automatically renew to a paid subscription unless it is canceled at least 24 hours before the end of the trial period.
• Payment will be charged to iTunes Account at confirmation of purchase.
• Your Apple ID account will be charged for renewal within 24 hours before the end of the trial period.
• You can manage and cancel your subscriptions by going to your account settings on the App Store.
• Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable.
• By signing up for this subscription, you agree to our Terms of Use and Privacy Policy.
Terms of Use: https://sites.google.com/view/volumeboost-terms-of-use/home
Privacy Policy: https://sites.google.com/view/volumeboost-privacy-policy/home