To play samples the Quantix adress counter is driven by the GATE INPUT pulsed by an external VCO . I have also plugged a low jitter Word Clock and it worked fine too...Anyway no need of a fixed clock here! It is so fun to drive it with a fast VCO and listen to all those bytes 'crunching' 
Here are two soundclip, made with one Quantix-8 . Sounds have been digitized using an RSF SD140 at a very lofi quality and sample rate then transmitted to the Quantix8 by midi...Sound is recorded directly at the Quantix-8 output while i am turning the vcos knobs...
Please be aware that samples bellow were played with an early firmware version
The actual firmware is MUCH better , faster and stabe !
Here are two other clips with the Quantix-8 used to play 32,samples each assigned to a note on the MIDI keyboard. The wavetable contain various 8 bits drum samples i had under the hand... It is also possible to play long samples using short ones maps . In this case the sample is 'cut' in parts of the map size and each one is playable independantly. It is great to cut drumloops and play /loop each measure in different order ..
Into the first sound clip i just play with the midi keyboard to trigg samples . The second file show the map cut /loop effect on long samples... No musical pretentions at all here ! Thanks !
Here are 3 soundclips still in sample player mode but sound samples are coming from 16/44 wav files cleanly converted to raw/bin files with a sound editor (Wavelab to not name it ...) . The sound is recorded directly at the modular output ...