The Vs Audio BlackBird Deluxe expands on the Greek company's Blackbird overdrive, adding several features (including a bias tremolo) to this amp-in-a-box circuit replicating the tone of Brownface and Blackface Fender amps. Voiced after the liquid-sounding and touch-sensitive tremolo circuit of the Brown Deluxe, the Vibrato has its own separate footswitch…Click on the title for more