Shuguang Treasure 300B-Z Power Vacuum Tube (Matched)

2 Reviews
SKU: SH-300B-Z

Availability: Usually ships within 24 hours.

USD $‎199.95

Note: Low stock, only single tubes available. No matched pairs.

The Shuguang Treasure series required additional parts selection quality control processes, improved vacuum techniques and additional burn-in time and testing. This Shuguang Treasure 300B-Z vacuum power tube is their premium export grade and purchased direct from Shuguang in China.

Be sure to read the great 300B tube review and comparison from the Wall of Sound.

Other Shuguang Treasure tubes300B Types

Additional Information and Downloads

300B Tube Reviews

Ordering info: We will send you a matched set if you order 2 or more. For example when "Matched" is selected and you order "2" tubes, we will send a Matched Pair. If you order "4" tubes we will send a Matched Quartet.

Warranty Information and Return Policy

Warranty Period: 3 months

All our tubes are guaranteed for 3 months from the date of purchase. (Any exceptions will be noted on that tube's Warranty tab)

If you receive a tube that does not perform to the manufacturer's specifications, please do the following:

- contact us to get a return authorization
- return it via regular mail within 90 days from when we shipped it, and we will provide an exchange or refund of the full purchase price of the tube.

Returns not related to warranty or defect will be considered at our discretion, and are subject to a 15% restocking fee.

We can not accept returns that don't have an authorization, are past 3 month, or are returned improperly.

These guidelines may be updated without notice.

Ratings & Reviews

2 reviews

  • 3 stars
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  • 1 star
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The tube you can’t live without (2 years in…)


I had heard legends of the shugang treasure when I started rolling tubes. Every message board post spoke of this amazingly silent, warm, precise, and holographic sound. All the hype was/is true. After tossing it in, suddenly my music came to life. Everything was present in a way I’d never heard before. You want the music closer? Here it is.

How has that sound held up? Well, two years into having the treasure sit in the darkvoice 336se I use as a preamp (that I sometimes leave on all day), it has held up immaculately. The treasure is as dynamic as the day I got it. And it still puts a smile on my face. Worth every penny.

Best Chinese power triode I've heard to date


I recently reviewed the whole fleet of 300B tubes. The Shuguang Treasure 300B-Z came in second place overall, it's an outstanding tube and looks great as well (in my opinion). In terms of detail retrieval none of the other 300B's could match the 300B-Z. ONE CAVEAT, this tube always sounded quite bad when first powered on, almost unlistenable for the first few minutes. Give it 15 minutes to warm up (it doesn't need to be playing music) and it sounds like itself. Which is to say, excellent. For my full review see my website,