In computing, the Advanced Multimedia Supplements (also JSR-234 or AMMS) is an API specification for the Java ME platform. Practically speaking, it is an extension to JSR 135 Mobile Media API providing new features, such as positional 3D audio processing, audio and video effects processing, better controls for digital camera, and better support for analog radio tuner including Radio Data System. AMMS was developed under the Java Community Process as JSR 234.

JSR-234 defines six feature sets, namely Media Capabilities, and each define minimum implementation requirements in order to try to avoid fragmentation and to define a common minimal base line for the implementations. Every JSR-234 implementation must support at least one Media Capability. The six Media Capabilities are described in the table below.

In addition to the Media Capabilities, the device is free to support any of the optional features including:

There are also implementations targeted mainly for mobile device manufacturers.