The SPL Transducer is a speaker simulator and DI of the finest quality. One of the best studio pieces for guitarists available. Used by Mark Knopfler, Joe Satriani, and others, it allows headphone output with the full sound quality of your cranked rig. Balanced outputs and mic level output. You can connect a loudspeaker cab at the same time or operate the amp without a speaker cab and use only the power soak and DI out. Allows control of the speaker simulation effect, simulated mic types & miking techniques, speaker cab styles, dual outputs.