Nature Sound series is the newly designed  products  made by Shuguang Corporation in 2012. They are improved on the basis of Treasure series with the purporse of beautify the appearance and sound quality of the former tubes.  The hi-end products will give  you a refreshing feeling . This is the price for two tubes matched pair with the same current data.They have shining gold pins and excellent sound quality ,which is considered...

Direction：  Tianlaizhiyin tubes Shuguang Group factory celebrate the 50th anniversary of 2008 after the launch of Treasures series, another great masterpiece!  This series is the dawn of the R & D team in the version on the basis of the the existing treasures Imperial possession, absorbing domestic and foreign the various gall advantage of, which lasted three years constantly upgrading temper made??.  The product is very particular about the use of materials, including...