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GE NOS 7025 (12AX7/ECC83) Grey Plate Strong & Perfect Balanced Gm USA Vintage Vacuum Tube
- By GE General Electric
- Listed about 2 months ago by Fuzz Audio
- Condition: Mint
- 42 Views
Sold!
ATTENTION BUYERS - Please Read Our Shipping Terms, Our Testing Standards, Our Return Policy (30 Day Any Fault) and Read Our Great Reviews!
At FuzzAudio.com:
· All tubes are tested on a calibrated Hickok 539b & Western Electric KS-16650-L1 Tube Testers.
· 30 Day Money Back Guarantee
· All power and preamp are tubes tested for Mutual Conductance (Gm)
· Do not buy power or preamp tubes that have been tested solely on an emissions tester or “tube checker”- this is an inadequate test.
Tube Type / Number: 12AX7 (ECC83)
Actual Brand: GE
Printed Brand: GE
Quantity: 1
Plate Construction: Grey Plate
Country of Manufacturer: USA
Boxes: Unoriginal
Contrary to popular belief- roughly 70% of all manufactured vacuum tubes did not come individually boxed. VIVA tubes gets this wrong, shows what they know… Most tubes were manufactured for industrial use and therefore tubes were shipped and stored in large cardboard boxes with lipstick dividers.
Test Results: 1500 | 1500 Gm
Matched tubes should be within 5% Gm value of one another. This only applies to power tubes.
Minimum Good Value: 950 Gm
NOS Test Value: 1100 Gm
Life Test: 100+%
Sound Test (10 Being Most Silent): 9-10 (Great for both Guitar and Audio)
Tests as NOS?: Yes
True NOS?*: Yes
**Our Testing Standards:
Fuzz Audio tests each tube thoroughly.
-First we use a B&K 607 Emissions Tester for leakage and shorts.
The 607 is one of the best leakage and shorts testers made. It’s leakage test is extremely sensitive compared to a Hickok’s and adds 8 more short tests to the Hickok 539B’S 5 short tests.
Next, after a tube has passed testing on the B&K, we test for microphonics, mutual conductance and preform the Life Test on a calibrated Western Electric KS-15560-L1 (Hickok 539B).
Hickok 539B tests include:
Sound Test- During the Sound Test, 5 additional short tests are conducted as each tube is tested under real life conditions, connected to a sensitive radio antenna and listened to (the antenna picks up even the smallest discharges of current flow that would not power a light indicator or register on any multi-mete). Of course, we do this to make sure the tube has no unwanted microphonics in the tube. This test result is given in a score from 1 – 10 where 5 is reject and 10 is as silent as possible.
Next is, the bread and butter, patented Hickok Gm test:
The 539B meter reads in Gm instantaneously on the most sensitive Gm tube tester ever made. No random numbers that require you to calculate backwards, forwards or sideways. We give it to you in Gm and accurately. If someone says Gm value 92 they either need to do some more calculations for you or the tube is bad. A typical Gm value (especially if the tube is good) is above 1000. For example, a 6v6 has minimum Gm of 2350.
The very final test we conduct is the life test:
With the Gm test button depressed- the current flow to the tube is reduced by 20%. Hickok says that a tube “passes the life test” if the tube reads no less than 20% of its original Gm value. At Fuzz Audio we reject a tube with > 5% depreciation of initial Gm value or label it used.
****However, understand that to truly know how a tube will perform you have to plug it in and use it! With that said, we offer returns in the off chance we missed something- but it hasn’t happened yet!******
Shipping:
All orders shipped within 2 business days. Enquire for express shipping. International shipments MAY take a few weeks to arrive.
Tubes are packed with utmost care.
Return Policy:
30 day returns- any fault.
We do not consider buyer’s remorse a fault.
Product Specs
| Condition |
Mint (Used)
Mint items are in essentially new original condition but have been opened or played.learn more
|
| Brand | GE General Electric |
| Model | 7025 (12AX7/ECC83) |
| Categories | Amp Parts, Tubes |
| Made In | United States |
Very pleasant transaction. Product is good! Packaging was AAA. They even added cotton in the tube boxes.
Robert W. - March 01, 2020
Items arrived exactly as described and fast shipping - Excellent Reverb Seller and would definitely do business with Fuzz Audio again!
Thomas S. - February 27, 2020
Jeffrey O. - February 23, 2020
Linda T. - February 22, 2020
Cameron C. - February 21, 2020
Accepted Payment Methods
- Reverb Payments
- Reverb Gift Cards
- Paypal
Shipping Policy
Available for local pickup from Englewood, CO, United States
Ships from Englewood, CO, United States to:
- Continental U.S.
- €2.85EUR
- Everywhere Else
- €14.23EUR
I will ship with tracking to the listed regions. To negotiate shipping rates to other locations, please send me a message.
Tax Policies
Taxes are charged in the following regions either by the seller, per their tax policy, or by Reverb as a Marketplace Facilitator:
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| *Marketplace Facilitator State. Reverb collects tax on the sellers behalf. Learn More | |
Return Policy
Return Window
This product can be returned within 30 days of receipt.General Terms
Items must be returned in original, as-shipped condition with all original packaging and no signs of use. Buyer assumes responsibility for all return shipping costs unless the item was not received as described.
Refunds
Buyer receives a full refund in their original payment method less any shipping costs and a 3% restocking fee.
Special Conditions
We will work with you!