The price is for a pair (2 pieces). If you are an owner of  a Revox A77 reel to reel, here you have an opportunity to convert your machine to play threw a pair of speakers without using external amplifier. These boards are a complete power amplifier (part # 1077850-01) which is plug in to your A77, very easy insulation,  it will take you no more that 10 minutes  of your time, no soldering, a simple plug in.  The power amp boards are in mint condition and they were tested and are perfect. They sound beautiful wonderful mid-range and deep bass.