Condition:New
Type:Logic ICs
Model Number:FU811
Talking about 811A, a tube that has been forgotten by many younger enthusiasts, there is an unshakable position in the heart of old burners. . . It can even be comparable to 300B, 211.845 these world famous tubes! The tube is a right-charging gate with gate current. Therefore, it is difficult to drive well. Although the driving voltage is not high, if the internal resistance is not low enough, the distortion will be very large. . . . . Generally, factories that do not have technical strength are afraid to develop, and the sound is relatively poor. . . . Therefore, there is a large inventory of electronic tubes and the price is very cheap. In addition, they are from medical equipment and use non-HI-FI audio tubes! But don't question her voice and productivity. . . . We are adhering to the spirit of advancing into difficult situations! Successfully developed the cost-effective FU811 single-ended amplifier amplifier 15W + 15w. The whole circuit does not have a coupling capacitor. The benefits of no coupling capacitor are unknown, and the frequency response is widened! Reduce phase shift distortion. . . . The overall sense of hearing: the sense of air, hall sounds, and overtones are very rich. There are 300B charming and 2A3 transparency, which is more precious and has an atmosphere of 845! !! !! !!
Machine parameter performance
Transformer parameters: The power supply is 114 * 80 (350W) as standard
Chokes: 76 * 50 notched pieces! 41 * 25 (z11). Output cattle: 96 * 50 sand
Tube parameters:
Voice of Nobles original pair FU811A * 2. Dawn 5Z3P * 1. Dawn 6P6P * 2, Soviet Union 6 * 8 * 2
Machine parameters:
Power: 15w + 15w
Distortion <5%
Impedance: 100K (input) 0-4-8 (output)
Bandwidth: 30HZ --------------- 42khz (-1db)
Weight: 22KG (net weight)
Three-dimensional: 440 * 250 * 200mm
Q1: What Is Your Product Warranty?
A: We Guarantee Our Product Is Fit For Its Normal User Purposes And Is Free From Defects In Materials Or Workmanship.
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Production Defects Or Transportation Problem, Please Contact Us. Our Customer Service Team Will Provide Immediate Response To
Complaints. We Will Try Our Best To Give You A Good Resolve Way.
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Working Days Depend On Destination;if The Order Quantity Is Large, We May Ship By Sea Container And The Best Ship Way Is By Sea,
Shipping Days: Over 20 Working Days Depend On Destination Port.
Q6:what Packing Do You Use?
A: Neutral Package With Airbag Or Customized Package.
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