Item Tag: AS-4A

5U4GB Vacuum Tube Combined Shipping Discount When You Purchase Multiple Tubes Together! Pick out all your tubes, contact us when you are done shopping, and we will adjust the invoice before you pay. About This Vacuum Tube… Condition: NOS (New Old Stock) Included: Tube and Original Box Brand: GE Brand Abbreviation: GE Made In: United States Tube Identifier: 5U4GB Tube Type: Full Wave Power Rectifier Used In: Used in Vintage Power Amplifier HiEnd Mcintosh 50W2 Tube Test #1: Plate 1: 64/40 Tube Test #2: Plate 2: 61/40 Tube Test #3: Gas Test: Not Applicable Shorts Test: No Shorts Equivalent Tubes: 5AS4A;5U4GBEH;5U4 G;5AR4;6SN7;GZ34;5U4GB;5U4G;5U4GA About Our Vintage Vacuum Tube Collection… These are the rigerous steps we go through to deliver Quality Vintage vacuum tubes to you, our customer. Visual Inspection, Cataloging, and Research: We start by assigning each tube with a unique inventory number, while visually inspecting it for damage under the intense bright lights of our DSLR to computer photo chamber. We research the tube type and other relevant information to pass on to you. Testing With Our Calibrated TV7/U: We test each tube with our calibrated TV7/U tube tester. We take pictures of the tube while it is being tested and of the test results. We then record the test results to pass on to you, to help inform your buying decision with concrete data. If we dont have the right equipment or knowledge to test the tube, we make note of that in the description to be fully transparent. We NEVER claim a tube is tested, when it is not! AMAZING CUSTOMER SERVICE WITH OUR 110% Money Back Guarantee “Seller went above and beyond…absolute top notch guy buy w/confidence” – eBay Buyer “Super transaction, awesome seller! Safe packing and fast shipping! Thank you!” – Another eBay Buyer After you buy, we do our best to provide you with the most Amazing customer service and buying experience, including our 110% money back guarantee, which means we not only refund what you paid for the item and shipping, but we also pay for your return shipping if you live within the United States (All 50!) or within the US Territories that the US Postal Service delivers to, like Puerto Rico! Our “Bullet Proof” Packing and Shipping “Honest and thorough, top notch packing, beautiful product. Highly recommend.” – Yet Another eBay Buyer “Arrived faster than possible” – And Another eBay Buyer Please dont shoot the package with bullets to test it! Its not actually bullet proof, but all shipments receive our super paranoid, over the top, packing for safe delivery. It basically means we think about all of the things that might break the vacuum tube or tubes (order more than one at a time for combined shipping discount) in transit and we try to make things so well packed, that the package could survive a tumble off of a three story building. Dont test that one either. Hopefully, as hard as we try, the package will be able to survive a delivery driver having a REALLY BAD DAY! See below for actual pictures of what we do to protect your vacuum tubes for shipping. Anti-Static Packing Added to the Original Box to Prevent Movement and Damage in Shipping Wrapped in Archival Plastic and Individually Boxed for an Extra bit of Protection Packed AGAIN with AntiStatic Bubble Wrap Sealed with an Inventory Label to Prevent Mixups Packed Securely Shipped to you in a sturdy box. Watch The Video Below to See Our Vintage Vacuum Tube Process Our Vintage Vacuum Tubes Quality and Shipping Process – YouTube Video will open in a new window Using the eBay App? Paste link into a browser window: