AMR WAVE to M4A supports WAV PCM. AMR WAVE to M4A supports Compressed WAV (ADPCM, GSM, DSP, A-LAW, U-LAW, ALF2 and others). Support OGG (Ogg Vorbis), G.721, G.723, G.726. Support VOX (Dialogic ADPCM), WMA Windows Media Audio). Support RAW (PCM, A-LAW, U-LAW), CDA (Audio CD Tracks). It rips audio CD tracks and saves them into audio formats such as mp3, wav, wma (Windows Media Audio), VQF (Yamaha SoundVQ), orOGG Vorbis, converts MP3, CD, CDA, CD-R, DVD-Audio, AAC, AC3, ID3, M3U, M4A, M4P, MP3 ID3 Tag, OGG, RA, WAV, WMA, MP2, APE, VQF, MPC, AMR, Midi, WAVE, and RM from one to another on-the-fly, resamples MP3 to MP3, WAV to WAV, WMA to WMA, OGG to OGG for changing bitrates, frequency, and other options. MP3 Encoder supports CBR (Constant Bit Rate) and VBR (Variable Bit Rate).