As a former electronic technician and lover of great music, I greatly enjoyed and appreciated this analytical comparison of 300B tubes! I know the Chinese tubes are criticized and was very curious how well they would REALLY compare to a popular “audiophile” brand. Thank you!
To my ear the Shuguang sounded much mellower, more depth, and had greater grip on the classical music. But I judged solely on the sound. It seemed to have more presence. Thank you for your interesting video.
Thank you so much for your testing. I will keep my shuguang kt88 instead of upgrading to gold lion since it is pretty much similar. Shuguang has been performed very well in the past three years. Greatly appreciated.
I agree. Filamentary triodes and the amplifiers that use them, have more resolving power than any of today's signal sources. If there's any difference, digital audio isn't refined enough, for you to be able to tell a difference.(quite frankly, neither is my hearing)
Shuguang isn't stupid. They provide a good product for a decent price. They know lots of audiophiles want to enjoy tubes like the 300b but would never buy such an amp if they had to pay $300 per tube. I heard a lot of boutique tubes are made by Shuguang but branded under other names. I understand that they are the tubes that simply test better than their common tubes. I don't know if that's really true or not.
Think about Shuguang 2A3C it is 2.5V version of 300B. The adventage, the filament is center tapped, I replaced my 300B with 2A3C with 2×0.5 ohm resistors in series on the filaments.
1. Great video and presentation Young Ahn. 2. With computer speakers, etc both the Shuguang and the Gold Lion 300B's sound very similar to my ears. Certainly the Gold Lion tubes appear to be constructed better than the Shuguang so my main thought, when it comes to purchasing either of them, would be which set are going to give the longest and most reliable service. My guess the Gold Lions would be more durable but that would not be as easy to test. Only time would tell. Thanks for the excellent upload. Puget Sound area of Washington.
좋은영상 잘 보고 있습니다. 40여년전 관심이 많았던 진공관앰프이지만 그 시대에는 접할수 있는 정보가 한계가 있다보니 책으로만(전자관련 월간지)접할수 밖에 없었지요...좋은 정보와 영상에 감사드립니다. 맨 처음 ID가 한국분이라고 생각하면서 구독했는데 본 영상에 e-bay Log on을 보니까 캐나다에 거주하시는 한국분이라고 확신하고 이렇게 한글로 남김니다
안녕하십니까, 세영입니다. 저의 채널 애청, 감사드립니다. 예, 저는 캐나다에 온지 19년 됩니다. 옛날 중고등학교때 공부안하고 땜질하던 일을 지금 다시 시작했습니다. 시정해야 할 부분이 있으면 언제든 조언 부탁드립니다. 그리고 영어가 시원치 않음을 양해하여 주시기 바라고요. 그럼 좋은 하루되세요.
@@YoungAhn 역시 예상이 맞았군요...저보다 2년 연배이시고요..."Fluxion Audio"를 검색해봤는데 유명인사이시네요. 한국어로 올린 영상도 있군요. 저도 어릴때 학생과학등 전자관련 월간잡지를 탐독하면서 라디오조립이나 아마추어무선(HAM)등에도 관심이 많았던 시절이 있었습니다. 광운전자공과대학(?)도 친숙한 이름이고요...요즈음엔 광운대로 바뀐지 오래되었지만 그때는 단과대이었죠? 70~80년대 한국의 전자산업을 이끌었던 분들이 전부 이 대학출신이었던걸로 알고 있습니다. 감사합니다
Useful information about the electrical properties and testing of the tubes. However, that is ALL this test is - a test of specifications. It says NOTHING about how they sound, and all the people below arguing about the sound are wasting their time!! A RU-vid video proves nothing about sound quality.You'd have to be IN THE ROOM with the system to make sound judgments. Duh!
Hi hi, thank you for your comment on my video. Somebody told me that LG electronics is a partner with Shuguang. LG was one of a huge picture tube manufacturers long time ago. Have a great day. Young
I had kt88 gold lion reissue , Black diamond telenfunken both waste of money. Shu guang black treasure and Psvane KTii are so much better. I had EAT too ,,, but the price is too expensive and it lasted only about 3 years .
I’m late to this video, but found it to be very useful. I’m curious if you had any negative experience with buying Chinese made tubes. I’m never sure if these are legitimate tube or fakes. Example would be Linlai tube 300d are these the same as Linlai Global 300b or Shuguang black treasure 300b that cost 40% less. The price and service is great but are these tubes legitimate?? Brian
My problem is, I can't tell any difference whatsoever. The digital sound on RU-vid doesn't have anywhere near the resolving power of a single-ended triode amplifier. There could be differences, too subtle to be resolved by this digital media. I am using studio quality headphones, which also is limited by the resolution of digital audio. I tested a 300B triode, with a 1kΩ pullup resistor on the anode, and it resolved a square wave at 2 megahertz. 2 orders of magnitude above the human hearing range. these tubes, and the amplifiers that use them, are as good as any signal source you can possibly have, thus, I doubt you will ever hear a difference in a "blindfold test".
To be honest this review is great and he shows much evidence and detail about each tube/valve. However playing the music to listen on a computer is just totally unrealistic and I never listen in this way. The only way to check differences is on a HiFi system in the flesh in the correct listening condition,. When I click on so called reviews that are just playing music I click off them as it is just ridiculous. The point he makes here is just the conditions are shown in which he listens his music.
Great video 👍👍👍 Is the amplifier using solid state rectifier for 300B? What's the best bias current for 300B in the system? I use Guiguang (桂光) 300B find its also good for the price and performance. Thx!
dear mr. Leo Lai, thanks for leaving a comment on my video. Yes, I use 4 Si rectifiers(UF4007). and Ip is 70~75mA(self bias). Have a great weekend. Young
Whenever a amp comes in for service here and has china fire bottles inside they get tossed first and not tested, sorry have encountered enough failures over the years no chances are taken anymore.
good evening dear JW. Thanks your comment on my video. I usually buy Chinese tubes on ebay. Most of my customers who purchase my amplifiers have never complained about tubes such as 300B, EL34, KT88. I set Pd for my product less than 80% : SE, less than 60% ; PP. These design value promises long tube life and safe operation. Thank you very much. Young
안녕하세요, 선생님. 아주 좋은 비교 시험 감사드립니다. PSvane 300B 저가형을 구입해 커브 트레이서로 측정한후 싱글 앰프를 몇년전 설계했으나 아직 앰프를 완성하지는 못했습니다. Psvane 300B와 슈광 300B의 비교에서 선생님은 어떻게 차이를 느끼시는지요? 감사드립니다.