Bóc Tách Pre Đèn Tube-03 Pro 900k ! Vì Sao Chiếc Pre Đèn Này Bán Vẫn Chạy ?!!

The FX Audio Tube-03 is one of the affordable tube preamplifiers chosen by many audiophiles to upgrade the sound quality of their DACs, Class D amplifiers, and active speakers. In this video, I will open up the Tube-03 and analyze its internal circuitry in detail: ✔ Actual circuit structure ✔ The role of the 6K4 tube ✔ How the NE5532 Op-Amp affects the sound quality ✔ What is the function of coupling capacitors? ✔ How the power supply circuit works ✔ The most worthwhile upgrades for the Tube-03 Many people believe that the Tube-03's sound quality comes entirely from the tubes, but the story behind it is much more interesting. If you are using a DAC, Class D amplifier, or active speakers and want a softer, more musical sound, this is a video you shouldn't miss. For those interested, please contact: Phone/Zalo: 0989.895.643 FREE nationwide shipping #FXAudio #Tube03 #Preden #AudioDIY #HiFi #Audio #DAC #ClassDAmplifier #TubePreamp