Comparison of sounds from 88bB to 100dB(ten times louder). Soundchain: Tone Tubby Alnico Red, a Marshall 1959HW Superlead and a Gibson Les Paul Black Beauty R7, a 1960s BeyerDynamic Ribbon Microphone, Apogee Duet Preamp and Sound interface, Ipad/Cubasis DAW. The MASS is ran on high range with no teble boost and the Tone stack is bypassed.