Offered For Sale - A Matched Pair of Genalex Gold Lion PX-300B Vacuum Tubes. I purchased these tubes from Tube Depot on 08/02/17 for $332.96. The price included a Tube Depot 24 hour "burn in". The tubes have a total of about 60 hours on them. I had them installed in my 300B monoblocks and they really sounded great. I decided, however, that I really wanted to try the Western Electric 300B sound and since I can't afford the NOS ones, I opted to purchase a matched pair of Shuguang WE300B Replicas (for over $600 for the pair). I don't need two sets of expensive 300B tubes, so I am parting with the Gold Lions.
This is what Tube Depot says about the PX-300Bs - The Genalex Gold Lion PX-300B is one of the best 300B audio power triodes being made today. Reminiscent of the Western Electric tubes of decades ago, the Genalex Gold Lion PX-300B combines traditional construction styling with upgraded materials. Gold plated grids and contact pins afford these tubes extended life by eliminating opportunities for tone destroying oxide layers to develop. The unique quadruple spring loaded filament / cathode supports provide consistent stability for years of hard service. The long than normal plates dissipate a full 40 watts (6 watts more than even the WE), providing wider bass dynamics before saturation. The soundscape provided by the Genalex Gold Lion PX-300B tube provides detailed midrange delineation and refined high frequency bloom providing uncompromising balance for all musical source material. Proudly mounted on a heavy arc proof ceramic base, the Genalex Gold Lion PX-300B is quickly becoming the premier choice for superior audiophile performance
Please check out this review which includes the Gold Lion PX-300Bs - http://wallofsound.ca/audioreviews/triode-roundup-seven-common-man-300b-tubes-compared/