dB Sound Design is proud to introduce to you Pendulum Audio. Pendulum Audio specializes in high-quality, hand-built vacuum tube recording equipment and electronics designed for amplifying stringed instruments. Since 1988, our Preamp Systems for Acoustic Instruments have been the choice of musicians worldwide who are serious about their sound - both on stage and in the studio. In 1998, we debuted a line of class A tube mic preamps and dynamics processors, which have quickly become modern classics. All the information about our entire product line can be found here.