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eBay 1pair HOOD-JLH2003 Gold Sealed Tube Dual Channel Power Amplifier Finished Board 18VDC Description: This is a finished board – one pair price, the set current of the finished board is 1A (per tube). This configuration of thermal conductive bridge angle aluminum (not a radiator), convenient for customers to connect a large radiator; Do not leave the current on for more than 10 seconds, otherwise it may burn the power tube HOOD JLH2003 is a further development of JLH1969. It changes from single power supply JLH1969 to double power supply OCL and combines them. The maximum output power reaches 22W (at 8-ohm load). Compared to the JLH1969 single power supply, the JLH2003 outputs The frequency response curve is flatter (the frequency response curve is affected by the lack of output coupling capacitor). The circuit has 13x magnification, suitable for building power amplifiers and headphone amplifiers. This kit is configured: Taiwan metal film resistors, non-inductive power resistors, ELNA-C feedback capacitors, Panasonic blue robe decoupling capacitors, Siemens coupling capacitors, Toshiba small transistors. The power tube is a used folding machine tube 2N3055 with gold sealing to achieve the best sound quality. Each tube is set to 1A static current, that is, the voltage difference between the two ends of the emitter cement resistor (0.1R) is 100MV. 22W pure class A power amplifier, heat generation is relatively large , please pay attention to heat dissipation. Recommended input voltage, plus or minus 18VDC (can be rectified by two 15VAC-200W transformers). Single-sided printed circuit board 15.6*7.4*1.6MM, 1OZ copper Package: 1Pair HOOD-JLH2003 Gold Sealed Tube Dual Channel Power Amplifier Finished PCB. Payment Method: PayPal preferred Shippment: We provide free shipping to international via China Post Airmail. We can also ship by TNT/EMS/DHL/FedEx for alternative shipping method for corresponding fees. Please let us know before payment if you need split shipment. Returns & Replacements & Repair: We accept returns & replacements within 30 days from the day the customer receive the products, please make first contact within 30 days from receiving the order. Products should be returned in original condition. As a benefit to our customers, we also provide repair within 3 months from the day when this item is shipped out, after repair is done, we will send you the item, but the customer should pay both shipping ways. Feedback: Your Feedback is really important to us, please take a few seconds to leave great feedback if you are satisfied with our product or service, thank you so much!
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