What's the difference of FLAC & HI-RES version?

normal flac is 16 bits where hi-res is 24 bits

<Edited> * Flac (Free Lossless Audio Codec) is a codec format. * Hi-Res (High resolution audio) refers to higher than 44.1 kHz sample rate and/or higher than 16-bit linear bit depth. See [wiki](https://en.wikipedia.org/wiki/High-resolution_audio). * The sample rate here is 192 kHz here vs. regular sampling rate of 40~48 kHz. See [wiki](https://en.wikipedia.org/wiki/Sampling_(signal_processing)). * The bit depth here is 24 bits per sample vs the regular 16 bits per sample. See [wiki](https://en.wikipedia.org/wiki/Audio_bit_depth).

thanks for the upload