Shuguang 300B Power Vacuum Tube

The Shuguang 300B Power Vacuum Tube will surely upgrade your audio setup with its top performance. Designed with precision and quality in mind, this vacuum tube provides unparalleled sound quality that will enhance your listening experience.

All RUBY™ Tube power tubes come already matched. There is no extra charge for this service. Our Magic Parts matching process is very exact and our tubes are matched within +/- 1 mA (mille amp) of each other.