eBay

Quality ShuGuang Vacuum Tube

Please read the listing carefully and ask all question before purchasing

 

Specification:
  • Quantity: 2 PCS (Matched Pair)
  • Features: 
    - The 12AX7 is a high-gain (typical gain factor 100), low plate current triode, and is therefore best suited for low-level audio amplification. In this role it is widely used for the preamplifier (input and mid-level) stages of audio amplifiers. With its high Miller capacitance, it is not suitable for radio-frequency use.

    - Typically a 12AX7 triode is configured with a high-value plate resistor, 100k ohms in most guitar amps and 220k ohms or more in high-fidelity equipment. Grid bias is most often provided by a cathode resistor. If the cathode resistor is unbypassed, negative feedback is introduced and each half of a 12AX7 provides a typical voltage gain of about 60. The cathode resistor can be bypassed to reduce or eliminate AC negative feedback and thereby increase gain.

    -
    The initial "12" in the designator implies a 12-volt heater requirement; however, the tube has a center tapped filament so it can be used in either 6.3V or 12.6V heater circuits.
  • The 12AX7B tubes are higher gain version of 12AX7C9 with shiny silver anode.
  • Condition: New
  • Part No.: SG-12AX7B

Payment and Shipping 


Shipping
  • Free Worldwide Shipping: Please notice extra $2 is needed for tracking service, we strongly recommend you choose the service to avoid item loss in transit.  Generally we'll send you the invoice with the charge, please contact us if you don't need the service.

  • Notice!
    - Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying.
    - Customs fees are normally charged by the shipping company or collected when you pick the item up. These fees are not additional shipping charges.

  • The item will be shipped by HongKong Postal airmail, the estimated delivery time is as followed(business days):

    - Asia: 7-15 days
    - United States, Canada: 7-15 days
    - Most European Countries: 10-15 days
    - Australia, New Zealand: 10-15 days
    - Italy: 15-25 days
    - South America, South Africa: 15-25 days

  • Paid order(s) will be shipped with 2 business days, then the tracking number(s) will be posted to eBay which buyer(s) can check it in YOUR eBay records, or you're welcome to contact us for it if you're not able to find it.  

  • Most buyers can track your package on www.hongkongpost.com or inquiry to the post office of your country, we're not responsible for tracking result to countries which do not provide tracking service.

  • We are NOT reponsible for item loss if tracking service is not applied.

  • We only ship to the shipping address that you provided to eBay, please contact us and make a note if your current shipping address is changed, or we'll not be responsible.

  • Bulk Purchase:
    - Combined shipment is always welcome, please wait the invoice with combine shipping cost from us for bulk purchase.
    - Cost for tracking service will be charged ONLY ONE time for bulk purchase. 

Payments

  • We accept PayPal only.

  • We assume payments can be made within 7 days after we send you the invoice, please contact us for extension if there's an unexpected issue. 


Return Policy

  • We check all items to make sure they're in good condition before shipping.  
  • All items will be package carefully to avoid damage in trasit.
  • However, if you receive the item DOA (Defective on Arrival), please contact us within 14 days of receipt, we'll arrange replacement or refund as you request.
  • If you're not satisfied with the product(s), you're welcome to return it for exchange or refund, please contact us for details when you're going to process the return issue.
  • Please return the item(s) to us in its original condition with original package.
  • Shipping and handling fees are non-refundable.
  • Customers will be responsible for return shipment fee.

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