The Russian product name of FU29 is FY29 and the American product name is 829B. It is a composite tube that encapsulates two Cambodian-fired tetrodes in the same glass shell. Using it in a power amplifier with push-pull output can reduce the trouble of tube matching. . FU29 filament voltage 6.3V, current 2.25A, screen voltage 600V, curtain grid voltage 200V, zero signal screen current 40mA, full signal current 110mA. Grid bias voltage -18V, the best load impedance from the screen pole to the screen grid is 13750Ω, the output power when the signal is full(Effective value)Up to 44W. In order to further simplify the circuit, this machine uses a composite tube 6N2 for pre-amplification and phase inversion, so that a single channel can use a 6N2 and a FU29 to complete the power amplifier task, and has a power output of 40W. The machine is small in size, unique in shape, but powerful in thrust. Do not use the power of general transistors or digital power amplifiers to compare the actual thrust of this kind of tube power amplifier. Because of the high power supply voltage and unique output structure, the output internal resistance changes relatively small for high and low frequency signals, and it has good low frequency driving capabilities. And the sound is soft and smooth, warm and delicate. This is also the reason why the tube power amplifier has not been completely replaced after the emergence of many new technologies.
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This machine is suitable for pushing ordinary bookshelves and most floor-standing speakers. We have tested the Dynaudio contour which is difficult to push here. The contour 1.8 floorstanding speaker has also been pushed magnificently. We have added a new Bluetooth 5.0 receiver module to facilitate the wireless connection of mobile phones and other portable devices.
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Dimensions:215 wide X190 high X308
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Output power: 40WX2
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Accessories: 1 220V power cord
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Weight: Net weight 12.3KG(Courier fee will be charged at 14KG with packaging)
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