Treasure is still a treasure 7 years after launched originally in Dec 2008. This is another addition to the series and quality carefully selected by Grant Fidelity for worldwide audiophiles and music lovers. Reviewer Mark Wheeler from TNT-Audio said:

“I have not heard a better current production 6SL7 from any manufacturer. NOS samples are too inconsistent to recommend. The 6SL7 double triode has always been one of the best choices for the tiny signals handled by phono-preamplifiers, typically achieving a low-noise transparency with a lush mid-band perfect for handling the human voice. The extra bass extension and bass definition of the Shuguang Treasure Series GF select (what a mouthful) would be enough to justify just over 200 bucks a pair in any phono-preamplifier over a grand. These 6SL7 samples add sharper transient-snap and timing too. The extra transparency and linearity that offers the greater scale and dynamics ices the cake sufficiently to justify two pairs, where possible, in a phono-preamplifier costing over 2000 Dollars or Euros. With valve equipment, the first tuning priority must be vibration isolation and the second tuning priority must be valve choice. With the tiny signals from phono cartridges, avoiding hum is an additional challenge, through careful earthing (grounding) arrangements and careful cable dressing. In a phono or microphone preamplifier, the 6SL7 is a great choice of amplifying device and the Shuguang Treasure 6SL7 may be the best of modern production.” Read full review here.