This listing is for a Sino 2A3 Preamp Vacuum Tube in original factory packaging. The Sino 2A3 is an improved version and is a cost-effective and suitable replacement for any 2A3. Price is for a single tube - order two or more for matched tubes.

We carefully test and match all power, preamp and rectifier tubes on a variety of equipment. Power tubes are tested and matched using a Maxi-Matcher at 400V. All preamp tubes are tested and matched using a Maxi-Preamp tester. Rectifiers are tested on a calibrated Hickock KS-1587-4-L2 Military Tester. When you receive your tubes, you can rest assured you are receiving the highest quality. Check out our feedback and rest assured that your buying experience will be a good one.  

PAYMENT: 

Payment by PayPal only and is expected following the placement of your order. 

SHIPPING:

Shipment will be made upon receipt of full payment. The cost of shipping is calculated by ebay and varies by buyer location. Once you receive your item, please carefully inspect the item for any damage and check to ensure 100% functionality. We offer both USPS and FedEx as a shipping option. Packages will be shipped within one business day, Monday through Friday. 

RETURNS:

We have made every effort to make a full and careful description of the items/s in this listing. All items are guaranteed to be in perfect working order upon arrival. Please take a look at our feedback to see our past customers' satisfaction. We want you to be happy with your purchase and will make every effort to work out a genuine problem with you should one arise. We do allow for returns for up to 30 days from the date of receipt.

Thank you for looking at our item. If you have any questions, please let us know.