System/Library/PrivateFrameworks/AudioServerApplication.framework

ASABooleanControl.h

NSObject
>
ASAObject
>
ASAControl

@interface ASABooleanControl : ASAControl

@property (nonatomic) BOOL value;

- (id)diagnosticDescriptionWithIndent:(id)a0 walkTree:(BOOL)a1;
- (id)coreAudioClassName;

@end