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Store Categories Store Categories Sax Tools & Mouthpieces Trumpet Tools & Accessories Flute Tools & Accessories Clarinet Tools & Accessories Violin Cello Tools&Accessories Piano Tools & Accessories Luthier Tools & Accessories *SAX MOUTHPIECES* Other HiFi 300B Vacuum Tube Power Amplifier Board DIY KIT Class A Stereo Audio Amp 16W Product Description Features 6SN7+300B single-ended output form design, high signal to noise ratio, background is very quiet. The preamp gain is high and the sound field positioning is better. The circuit is debug-free and easy to assemble. High-end and brand new components, such as French SCR coupling capacitors, 24K gold-plated diamond ceramics 300B sockets and so on to ensure the perfect performance of the circuit. Notice: 1. This is DIY KIT, you need to solder it by yourself, if you want assembled board please click: LINK . And because of the instability of some components, we will change to others of the same level, don'w worry. Not including vacuum tubes and transformer, if you want please contact us. 2. Don't turn it on before the output transformer connected to the speaker, no-load will result in damage. 3. Input voltage to the terminal connection must be strictly in accordance with the circuit diagram.the other parameters pls according to the PCB. The 5U4 filament is changed to 5V, and the 2 points that marked "L" are connected to the choke. 4. After the module is powered on and works normally, then install the vaccum tubes. Don't touch the tubes during its working. Packing List: 300B tubes Block----------- 2 8-pin tubes Block ---------3 PCB ---------------1 Small two terminal------------ 4 Small three terminals------------ 1 Siemens 68U-450V------------- 5 nichicon 22U-400V -------------2 France Suren 0.22U------------ 2 nichicon 10000UF 10V -----------2 25A Bridge--------------- 2 Heat----------------- 2 nichicon-100UF-160V --------------2 nichicon-100UF-16V Axial -----------2 LED----------------- 1 5W-2K imported Resistance------------ 4 2W-15 imports of Resistance ---------4 1K 1/4w DALE ------------5 22K 1/4w DALE -------- -----2 220K 1/4w DALE----------- 2 47K 1/4w DALE ------------1 150K 1/4w DALE ------------1 Payment Policy Shipping Policy Returns Policy Feedback Contact us Payment Policy PayPal is our preferred method of payment. It is the quickest, easiest and most secure way to pay for your goods or services online. PayPal offers buyer and seller protection should there be a problem. If you do not have a Pa yPal a c count, you can still purchase our products using the following steps. Simply click on the 'Buy It Now' button and follow the eBay checkout steps. Select PayPal as the payment method. Provide your card details in PayPal's secure checkout to pay for your order. Once the payment is made, you will be given the opportunity to create your own PayPal account for future purchases. Please let us know if you need help with the payment process. Shipping Policy All domestic packages are shipped for Free (Unless other shipping method was selected during the checkout). We ship within 3 business day of payment eBay Standard FREE shipping takes between 5-11 business days Expedite d shipping t akes between 3-4 business days to world countries by DHL. Other countries we use trackable standard shipping with a tracking number! Returns Policy *Please contact us before you start a return. We may offer you a partial refund or an exchange without hesitation.* In the event that you would like to return your purchase, we allow returns that are processed within the defined return date (the return date is to be found in the return policy/shipping and handling section). Please also make sure the item is in an unused and origin al condition! Feedback 1. In order to provide you the best service please treat the transaction fairly. B efore you leave a neutral or negative feedback, please DO contact us to get a better solution , Because we don't want to get a NEUTRUAL feedback or NEGATIVE feedback . Tks for your understand 2. If you are satisfied with our products and service, please help to leave "Positive Feedback" and "5 Perfect Stars”,for us when you receive your items and we will do the same for you. Thanks in advance! 3. If you have any questions regarding the transaction, before leaving any feedbacks, please contact us and give us an opportunity to find a solution. Thank you! Contact us If you have any queries, please contact us via ebay. We will respond within 12 hours. For urgent request, please call our 24 hour hotline! Copyright © 2021 Dianxiaomi