Headphone Amp Control is an app by Mario Andhika in the Music & Audio category. It has no native code, so it runs on any Android processor.
It asks for 2 permissions, 1 of them sensitive: modify shared storage.
Description
From the listing uploaded by “abdullah-mohsen”.
REQUIRES PERSEUS KERNEL 34.2 OR ABOVE
REQUIRES ROOT ACCESS
Disclaimer: I am not responsible for any damage this app may cause.
This app allows the user to handily change Headphone Amplifier Levels. Root access is required for file permission changes to the following files:
-"/sys/class/misc/wolfson_control/headphone_left"
-"/sys/class/misc/wolfson_control/headphone_right"
Two launchers can be found in the app drawer. One launches the Control app, another launches an overlay dialog for quick amplification level changes.
App Guide:
-Balance L/R toggle: Toggles amplification level balance between the left and right channels. When checked, disables the right channel seekbar and copies the left channel amplification level value to the right channel.
-Main seekbars: Current amplification level values. The top one is left channel's, bottom one is right channel's. The minimum and maximum values are defined by "Min level" and "Max level".
Control App Guide:
-Min level seekbar: Minimum amplification level that is settable by the main seekbars. Cannot be higher than safety level or max level.
-Max level seekbar: Maximum amplification level that is settable by the main seekbars. Cannot be lower than safety level or min level.
-Toggle service (notification bar shortcut): Enables notification shortcut. Must be checked to enable safety level. Notification only appears when headset is currently plugged in.
-Toggle volume button hack: Automatically sets checked volume type to almost max. The volume buttons can then be used to directly adjust amp levels, depending on context. The seekbar determines amp level jump.
-Hack music volume: Enables volume button hack for music, media, video, and games volume
-Hack voice call volume: Enables volume button hack for voice call volume
-Hack ring volume: Enables volume button hack for call ringtone volume
-Safety level: When headset is plugged in the first time, the current amplification level is compared with the safety level. If current level is higher than the safety level, then the current level is lowered to the safety level.
Has only been tested on Samsung Galaxy Note II
Development made possible by help of:
-AndreiLux
Security & authenticity
Security rating: Unknown
Signing certificate
Certificate issued to “Unknown”The developer's name — though anyone can put any name in a certificate.
Store checks and file details
Developer signature not checked yetOct 5, 2013
Antivirus scan passedOct 6, 2020
Signed byCN=Mario Andhika, OU=Unknown, O=Unknown, L=Pensacola, ST=Florida, C=US
Uploaded by “abdullah-mohsen”Bronze tier · 6,076 followers · uploading since 2012
Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures. AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.
Permissions (2)
Headphone Amp Control requests 2 permissions, 1 of them sensitive.
Can I install this APK over the version I already have?
Only if it is signed with the same certificate as the copy on your phone and isn't an older version. If Android says “App not installed”, the certificates differ; uninstalling your copy first works but deletes its data unless it is backed up.
Is the Headphone Amp Control APK safe?
No one can promise that a file is safe, but some things can be checked. The source store rates this file Unknown. After downloading, check that the file's MD5 is 22c7e3e587a28c9777c09c0c785e2b40.