What is audiophile file format? It's lossless (bit perfect) only: compresed or not.
Bit perfect is feature of comressed lossless audio files:
uncompressed lossless file full (bit-to-bit) is identical to own source (uncompressed also).
Uncompressed audiofile have "bit perfect" by any way.
Audiophile file formats:
flac - compressed;
wav - non-compressed;
wma (9.1 and later) - compressed.
Compression rate (compressed output / non-compressed source file size) of lossless audio codecs about 60-80%.