All items guaranteed 100% BRAND NEW in the original edition Box. ONE-YEAR WARRANTY !!! 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...

version A Tube: Shuguang 2A3B*2，Shuguang 211*2，Shuguang 6SN7GT*2 version B Tube: Shuguang  Treasure 2A3-Z*2，Shuguang 211-TA*2，Shuguang Treasure CV181-Z*2 version C Tube: Shuguang Screen 2A3B*2，Shuguang 211*2，Shuguang Voice Nature CV181-T*2 Specification: Model: SG-211-1 Color: Sliver & Black Product Type: Single-ended class A tube amp Rated Power (W): 15W +15 W (Max 17W ) Frequency range (Hz) :20-25kHz Noise voltage is less than: 1mV SNR (dB): 88dB Input...

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 .  A pair of 6CA7-T tubes are packed in its original box (if buy one does not package in original box). They have shining gold pins and excellent sound quality, which is considered the top tubes in China.