How to find out what A2DP codecs are available on my devices?

Hi, I am not sure which forum to ask this question. I am on the market for a new and hopefully better set of Bluetooth speakers to replace the cheap one I have. I understand that there are a number of audio codecs used for Bluetooth stereo but not all Android sources and Speakers support the most sophisticate codecs. Some may only support the minimum subband coding. So, before I spend the money, I like to know if there is an easy way to find out (ie. via an APP on Android) if my phone and the new speaker I intend to buy have the capability to use AAC.