Our headphone amplifiers are the truest expression of our mission to bring tested designs and minimalist values to personal audio. We have chosen to utilize only single-ended, zero feedback tube designs to bring back warmth and musicality to personal audio. Each model balances the desire for power, the need for quiet operation and the desire for wide bandwidth. The ampsandsound sonic signature closely approximates the best aspects of the classic tube sound of the 50s (maximum midrange bloom), supplementing it with a modern bass signature and transient speed. We have chosen a few of our favorite designs to bring to market.