Testseek.com have collected 1 expert reviews of the Shuguang Treasure Black Bottle 300B-Z and the average rating is 0%. Scroll down and see all reviews for Shuguang Treasure Black Bottle 300B-Z.
-
1 Reviews
Average score from experts who have reviewed this product.
So Shuguang have been making valves for 50 years, and supply 40% of the world's audio valves Most as OEM production. With that sort of background I suppose it's no surprise that they've produced some pretty spectacular valves under their own 50th Ann...
