Sell ﹉❁۩High power T330HiFi fever grade gold sealed tube/post stage power amplifier board/adjustable pure best price

T330 voice is natural and mellow, big, clean, and has enough stamina. You won't be bored after listening for a long time, and it's patient! In addition, its thrust is quite good, and it can easily handle a pair of 12 speakers in the case of 3 pairs of tubes. The circuit is redesigned and arranged with reference to the circuit of the famous machine, optimized, and has continued to make its sound more stable at the same time. It is suitable for high-fidelity household HIFI class, full of power, clear and powerful sound quality, pure, clear and delicate sound! A large number of capacitors use German Red Weimar, audio frequency tubes 1145 and 2705 for signal amplification, and imported ON Semiconductor MJ15024 MJ15025 gold-sealed tubes for power amplification stage, 3 pairs of parallel output per channel, large dynamics, fine tone, parallel output, and can Double the output current, push it hard enough, The pipes are brand new and original to ensure that they can withstand enough pressure, the effect is shocking, and the strength is extraordinary Optimized circuit design, integrated switch machine output delay protection, mid-point voltage protection, and overload protection. The overall noise ratio is very high, and noise is almost heard when installed. There is a rectifier filter circuit on the board, and the power supply voltage range: it can work reliably in AC dual 30V-45V, and the protection circuit uses AC 12-16V 1A or more (independent power supply, not shared with other circuits) It is recommended to use double cattle independent left and right channels to supply power separately. The power of each channel is above 300W, and the left and right are independent. Of course, a larger transformer would be better). The power of the transformer is very important when enjoying big dynamic music. It allows you to truly experience what is shocking and what is the sense of presence. Regarding the quiescent current, the quiescent current is directly related to the temperature. The larger the current, the higher the temperature. The quiescent current has been adjusted to about 200mA per piece before shipment, but because of the different heat sinks used, the temperature rise is also different. Therefore, the quiescent current may also be different from the value I adjusted. The quiescent current can be adjusted appropriately according to the actual situation, and it is better if the surface temperature of the tube does not exceed 60 degrees. Note: The power amplifier board only comes with a thermal bridge when it is shipped, and a large enough heat sink must be added before power on When shipped, the quiescent current is adjusted to about 200MA for each piece. Product name: T330 gold seal power amplifier board Output power: 300W+300W Impedance: input 100K output: 4-8 ohms, magnification 25 times Frequency response: 20HZ-20KHZ Harmonic distortion: 0.003% Input voltage: It is recommended to use more than 300W, the