These are a pair of the gold pin version of the JJ tube that are matched, balanced and high gain that I paid extra for. These were my backup pair. The 803s tubes are 12ax7 tubes with long plates. These throw a large soundstage with excellent bass punch. Nicely extended high end with nice midrange vocals. They performed nicely in my phono preamp and better than any other current production tube that I tested them against and even better than a few nos tubes, imo. They only have between 60-75 hours on them and are rated for around 10,000 hrs! Barely broken in. Shipping included to lower 48. Tubes are well packaged and ready to ship.