I just replaced my (8)EH KT88's in my Cary 120S amp with 8 Grade A Shuguang Black Treasures and also replaced the 2 driver and 2 input 6sn7's with Shuguang Black Treasure CV181Z's. The amp sounded very good with the EH tubes but the Treasures redefined this little Cary. Every aspect of the audio performance has been elevated to levels I thought were impossible. The tubes have about 90 hours on them and I am told they will improve with more hours. My Preamp is the Cary SLP 03. I have TJ Full Music 12AU7's coming and can't wait to try them out (EH 12AU7 replacements) The speakers are Harbeth Compact 7ES3. After 40 some odd years it seems like just maybe the SEARCH is over. I can honestly say the Shuguang tubes have been the single largest improvement I have ever made in any of my many audio systems over the years. Dave Hubbard
