2022 Oldchen High-Power EL34 Tube Amplifiers 5Z3P + 6N9P + EL34 Stainless Steel shell Output 2 * 10W AC110/220V summing amplifier Audio Amplifier Boards

Korean YuoTube:  

https://www.youtube.com/watch?v=jPT-Z689Q7o

https://www.youtube.com/watch?v=4QvpzsISp1E

From now on, the rectifier tube will be upgraded to the 5U4G of Noble Voice for free, and the two EL34 power tubes will be upgraded to the special export tube of Noble Voice for free, and the previous stage will be upgraded to 6H8C imported from the Soviet Union.

Since the launch of the manual scaffolding and wiring stainless steel amplifier, it has been supported and affirmed by the majority of audiophiles and audio enthusiasts, rejuvenating this ancient craft. Each model launched by Shandong Laochen is an original product designed with care. During the period, we have gathered countless fans’ improvements and suggestions. We never add some fancy functions. We pay attention to the sound quality of the amplifier and the internal craftsmanship. The wiring reflects not only the attitude and craftsmanship, but also the performance and quality of the machine.

The working voltage of the tube amplifier is more than three hundred volts, which is ten times or twenty times that of ordinary transistor power amplifiers. It performs very well on the details of music. With rich even harmonics, it gives people a soft and mellow sense of hearing. , An old song makes people never tire of listening to it, and it can perform well with full-range speakers and vocal string music. Coffee shops and other business places that need background music can also have good results. This EL34 tube amplifier is completely in accordance with the traditional circuit tube rectifier CLC inductance filter, and the fixed components of the scaffolding strip are carefully wired and welded by hand. Each machine can be individually customized for you. The delicate handwork and beautiful sound are your collection. Best gifts for friends.

The bottom noise of this machine is mostly between 0.5 millivolt and 1 millivolt, and the volume potentiometer is turned off. Only when the ear is attached to the speaker can you hear the weak hum. The noise after the volume is turned on is related to the signal line and CD used. The quality of the product has a lot to do with it, not the bottom noise of the machine, please pay attention to this point.

The simple and sound circuit designed by dzdn29, 6H8C push EL34, adopt dual 290V rectifier, CLC inductance filter, the default super linear connection of the whole machine is about 10W, the triode connection is about 8W, it can be used to push 100W and the sensitivity is above 88DB Bookshelf boxes or floor boxes are enough to listen to vocal strings. Those who like DJs or loud noises are not recommended to buy them. You can buy push-pull tube amplifiers or ordinary power amplifiers from our store. The power consumption of the whole machine is 105W, the power transformer is 160W, and the margin is 55W. After 2 hours of starting, the temperature in the north is slightly higher in summer and only warm in winter, which can guarantee continuous power on for 24 hours. The output transformer adopts 0.35 special audio Z11 silicon steel sheet imported from Japan, with a tongue width of 22 and a thickness of 45 or 50. The large-caliber floor-to-ceiling box with high actual listening sensitivity is surging and powerful, the mid-frequency vocals are mellow and soft, and the high-frequency is crisp and clear. A Tsai Qin's ferry makes people listen mesmerized, even if it is used to listen to popular dance music People are shocked, and the strength of the bounce and the clear resolution make people never tire of listening.

Products real shot: