The “Quads” longevity is a testament to its outstanding sound quality and highly editable effects. The Quadraverb can squeeze out an awesome amount of sonic bliss in the hands of the right programmer. Editting may be done via the frontpanel or via midi.
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PATCHLINKS

Quadraverb and Quadraverb Plus Individual patches Each of these patches is stored in its 155-byte SysEx format. Patch Banks Each of these files is 14708 bytes, and contains 100 patches. They are stored in SysEx format, ready for loading. Note! They will overwrite your QV memory.   More info and patches here

Quadraverb Plus, GT, Q2, Q20 Charlie Hall has developed patch sets for these Quadraverb units and some others over the years. The sounds are very close to the original sounds of many vintage echo tape units from the past. Compared with modern digital fx boxes, the sounds are warm and very close to reallity More info and EFTP patches here More information on Echo sound creation etc.