Importing files to iMac


I'm importing files from discs to an iMac for transfer to a Sony HAP. I've been using iTunes (MP3 at 192 kbytes), but it's been suggested I should use uncompressed AIFF. But iTune AIFF is limited to 48 kbytes. What's the tradeoff between compressed and lossless and bit-rate? Should I look for software other than iTunes for encoding disc files, and if so what?
Ag insider logo xs@2xdbphd
It saves ripped tracks wherever you specify. Could be your iTunes library if you want it to be, but it could be a different folder if you prefer. Cheers,
Spencer
Following advice of Abe Collins at an Asylum thread I reset iTunes AIFF encoding to automatic and 16 bits.  I've now become pretty proficient at resetting the Sony HAP, clearing the iTunes library, resetting encoding, and clearing the memory of the HAP transfer app.  The actual process of ripping to the Sony HAP-Z1ES requires of me only inserting a CD or SACD into the reader I use with my iMac.  The resulting sound is excellent, indistinguishable from that with the disc played on the Sony SCD XA5400ES.
Abe knows his stuff. With SACD thru the Mac drive, is the HAP-Z writing a 24/96 hirez file?
I'm not sure what the HAP-Z1ES does.  I think it may upscale uncompressed encoding to DSD during playback, and attempt to address the loss from compressed encoding.
I should have written that I don't know if it writes a hirez file or converts it during playback.  I do know an SACD source sounds like an SACD.