Another Treasure! – ‘Black Bottle’ 845-Z introductory pricing on

845-Z singleA new addition to the highly popular Shuguang Treasure series! We have brought in a very limited quantity to test market – if you are adventurous and experienced in tube rolling, we welcome you to take advantage of our introductory pricing and let us know how they compare to other 845′s on the market.  Order yours HERE.

Like the rest of the ‘Black Bottle’ original Treasure Series that was introduced back in 2008, this model is the first venture to introduce carbon coating to high voltage 845 tubes as a technical break-through.


– Carbon compound coating to quickly dissipate heat generated from tube operation to achieve a ‘self cooling’ effect, plus absorbing external interference

– High quality German cathode material and 10% more enlarged emission area than typical 845 tube to ensure sufficient emission at time of high dynamic signal playback

– High voltage resistance design to ensure no flashing short will occur in operation

– Pure 24k gold coated grid to reduce internal noise and reduce secondary grid emission

– Elegant design tube base and leave no finger print residual

– Gold coated tube pins to improve conductivity, reduce signal loss and improve output efficiency

– Suggested burn-in time: minimum 100 hours, recommended 200hr for full break-in

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