US audiophile specialist Audio Fidelity issued their first ever box set in December 2013. 

The Audio Fidelity Collection contains four classic Deep Purple 24K Gold CD titles from the Mark II line-up, namely In Rock, Machine Head, Fireball, Who Do We Think We Are.

Each of those titles have been issued separately in the past, but those are now long out of print, so if you missed out the first time, this is an opportunity to pick them up again. 

Each CD is packaged as they were originally, with the familiar die-cut slipcases and they will sit within a slip case container with a metallic Deep Purple design. 

These are individually numbered and reserved to 5000 units, this is number 1331.

The Deep Purple Audio Fidelity Collection was released on 3 December 2013.