$12.6 Buy It Now or Best Offer
free,30-Day Returns
Seller Store zckqsky
(6697) 99.4%,
Location: Shenzhen
Ships to: US,
Item: 333550086142
Restocking Fee:No
Return shipping will be paid by:Seller
All returns accepted:Returns Accepted
Item must be returned within:30 Days
Refund will be given as:Money Back
MPN:Does Not Apply
Unbranded/Generic:Unbranded/Generic
Country/Region of Manufacture:China
Model ::Germanium Tube Splitter
Type:Four 2SB422 Assembled Board
2SB422 Amplifier Board:2SB422 Amplifier Board
Germanium Tube Amplifier Splitter Headphone Preamplifier Board Toshiba 4* 2SB422Item DetailsGermanium Tube Amplifier Splitter Headphone Preamplifier Board Toshiba 4* 2SB422 Description: Four 2SB422 Assembled Germanium Tube Amplifier Splitter Headphone Preamplifier Board The full-Germanium tube magnification fraction element front-level headphone magnification board. The two-channel front-stage amplification line, the second-stage line 2x amplification, the nostalgic line, suitable for CD, mobile phone, and other digital signal source input. For those who have not played the tube and have not heard the charm of the tube can let go and experience and experience! For the xenon tri-tube 80, 90 after the has been very strange, the niobium tripole is the ancestor of the transistor, silicon tube appeared before the tube was once unified, the most common to the old-fashioned semiconductor radio. Now use it to do sound amplifier, soft and sound, delicate sound, has the taste of The ancient, the sound of the tube warm and mellow, delicate thorough, relaxed, endless, quite modal, sound is different from the silicon tube, but also different from the tube is also different from the field effect tube, has its unique flavor and style. The tube sound is thicker than the silicon tube, the reason is charming, but also suitable for its so-called AGC ability, that is, the bias is higher (the greater the current), the greater the HEF, this feature makes the sound of the tube out very expanding force, not simply with the more traditional sound of the bile can be described and compared, for the tube is natural. The line 6 tube amplification, 6 volts DC operating voltage, operating current about a dozen to dozens of MA. The use of foreign FM radio headphones to monitor the amplification line, input 1 volt to 1.5 volts signal voltage, 2 times the voltage gain, not easy to cause the signal top distortion, and modern high-indicator low distortion to enlarge the line taste effect is obviously different, can not be compared! The circuit board material is excellent, the use of Japanese-made TOSHIBA Toshiba gold sealed three-ray tube 2SB422 assembly of the circuit board material is excellent, the first stage 2SB422, the second stage with 2SB422 and domestic 3BX31 or other models of the tube push-pull output, illustration instrument pairing assembly, domestic tube tube parameters are very discrete, Hundreds of tubes also can not pick a few pairs of pairing, time-consuming, is most people do not understand, no pairing without careful debugging is not good sound. Need external 6V regulated power supply, line quiet. Affirm: do not match the schematic, voltage 6V regulated power supply, can not be used over voltage, otherwise the burning plate burning pipe. Note: small signal amplification board, the signal is too large easy to appear distorted, the signal input before adding a potopotor, control size, otherwise easy distortion The grid parameters are slightly different. If the component color map, parameters and physical and schematics on the finished plate are different, the receipt will prevail! Packing List: 1 x Germanium Tube Amplifier Splitter Headphone Preamplifier Board About PaymentAbout DeliveryAbout ReturnsAbout FeedbackContact usAbout PaymentPlease told us your special request (e.g. Colors or Size) in ebay message when you paid.Any special request cannot be accepted after 24 hours of payment, because most of orders will be processed instantly and same day dispatched.About Delivery1, Default send by airmail, about 45-52 days can arrive most of countries, but Brazil, Africa,Ukraine and some other remote countries may be will need some more days.If you need it urgently, please contact us for adding money using a faster courier(DHL, EMS, FEDEX etc.)2, International shipping requires complicated shipping procedures(such as both countries customs, transit sattions etc.), also will be affected by many factors, such as holidays, weather conditions etc, so if you have not received your item within 50 days, please contact us.3, For cross-border transactions, we are not responsible for tariffs and duties.About Returns1, We accept returns & replacements within 30 days from the day of customer receive the products, please make sure first contact within 30 days from receiving the order. Products should be returned in original condition.2, Please don’t easily open an ebay or paypal case or return case with us, tell u what is the problem, we will solve any problems and cover your own rights.About FeedbackDear buyers, we appreciate your business, if you are satisfied with our service, please leave me a postive rate, Your recognition will make us more confident to develop business and serve you better. Our goal is to make sure you are a happy buyer and pleasant shopping with us.Please give us ebay message before leaving any 1 or 2 ratings, neutral, negative feedback or open any dispute. We understand the concerns and frustrations you might have, and will do our endeavor to resolve the issues. Please give us the opportunity to resolve any problem. thank you very much! And hope to see you soon.Contact usIf you have any questions, please feel free to email our service specialists 24 Hours a Day, and we will reply you ASAP. If no response within 24 Hours, please check the spam of mail box or kindly re-send it to us.We greatly appreciate your POSITIVE feedback. Please do NOT leave negative or neutral feedback without any contact. If you haven’t received item in 30 days, please contact us and we will arrange refund or resend.
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