Morley Pro Series Distortion Wah Volume.
 
MORLEY PRO SERIES PDW 
MORLEY PRO SERIES PDW II
MORLEY PRO SERIES PDW III
MORLEY PRO SERIES PDW IV
MORLEY PRO SERIES PDW WAH
 
Audio sample here - https://www.tone.net/tonex/tonemodels/72997
 
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