Stanley Clarke Signature Preamp B-StockThe EBS Stanley Clarke Signature Acoustic Preamp. Amplifying an acoustic instrument like an upright bass is challenging. With superior sound quality, powerful filters, and essential features, this pedal is the perfect tool to deal with all these challenges. The Stanley Clarke Signature Acoustic Pream is a 2 channel preamp, built exclusively with premium components. It is engineered and designed by EBS together with the legendary bass player and