The Soundcraft EFX™ Series combines all the features of the popular Soundcraft EPM™ mixer with a built-in 24-bit, digital Lexicon® effects processor, expanding the Soundcraft low-cost, multipurpose compact range.The Soundcraft EFX™ Series combines all the features of the popular Soundcraft EPM™ mixer with a built-in 24-bit, digital Lexicon® effects processor, expanding the Soundcraft low-cost, multipurpose compact range. The Soundcraft EFX mixer uses the same AudioDNA® processor featured in many of the Digitech® and Lexicon outboard equipment including the highly respected Lexicon MX400 processor.