Treasure 6SL7-Z: “I have never heard bass like that from ANY amp”

Treasure 6SL7-Z pair in box with logoFeedback received from Nick B. in UK about Treasure 6SL7-Z:

“Hi Rachel,

I just thought I would drop you a note having put the 6SL7-Z tubes into my monobloc amps.

The only word I can think of to use is WOW!

I have never heard bass like that from ANY amp, never mind a valve amp. What a difference it has made to the music.”

Review published by TNT-Audio: “I have not heard a better current production 6SL7 from any manufacturer”

Treasure 6SL7-Z pair in box with logoTreasure 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.

Immediate improvement heard when fitted in CV181-Z and 6SL7-Z

treasure 6SL7-Z singleFeedback received via email from Darren in Australia:

“Hello Rachel,

I just wanted to let you know the (KT88-Z, CV181-Z and 6SL7-Z) arrived yesterday.

I fitted the CV181-Z and 6SL7-Z first and listened to a significantly improved openness …

I should have done more  listening to get a better appreciation of the difference, but could not wait to add in the KT88 treasures

Again the sound was improved – less bass slam – tighter

I look forward to a longer burn in period to get the full appreciation, but first impression is that they are very nice.”