2x MATCHED 6S33S / 6?33? 1981 Audiophile Power Output Triode PAIR Tubes 6S18S

Description

6S33S ( 6С33С )
<> Military Grade <>
Audiophile Power Output Triode Tubes
We offer you a pair that is:
Properly Electrically Matched
*
( Ia and S parameters as described below)
TEST RESULTS:
Ia
S
mA
mA/V
6S33S
Date of Production
1981
510
38
6S33S
Date of Production
1981
580
38
Tested at catalog parameters Uf =12.6V / Ua =120V / Rk=35
Ω
WHERE "EXCELLENT"
is above
Ia = 470mA / S=40mA/V
*General info about measurements -
Having 6S33S tubes
properly
tested, like the manufacturer intended to have them working, on a conventional tube tester is plain and simple
NOT POSSIBLE.
Even the most famous soviet tube tester L3-3, with its transformer allowing maximum of 150mA anode current cannot even slightly handle these power tubes with their catalog anode current of 550mA +/-80. So, don't find yourself trapped into the marketing trick of buying tested, not to mention matched, 6S33S tubes on a conventional tube testers. Unless you like being played around.
**About our measurements -
We are proud to be one of the very few sellers nowadays on the market, who have the proper equipment for testing these and other power tubes based on manufacturer parameters. We are using our own design of a digital tube tester allowing us to handle power tubes with anode current of UP to 800mA. You can take a look on it at the bottom of this listing.
Terms and Conditions
By committing a purchase from this listing you confirm, that you have read, fully understand and accept the following:
The item(s) will be shipped by:
ECONOMY international mail (
without tracking
)
or
STANDARD international mail (
with tracking
)
it depends on what service you will choose during the eBay checkout.
Using a tracked service is always recommended!
IMPORTANT
: If your order came with Economy mail chosen, you acknowledge, that you have consciously chosen an unregistered service without the possibility to have your package tracked/located in transit, therefore all associated risks of delays and/or loss of the package remain buyers responsibility and for your own expense. A
fter-sale customer support in terms of order tracking, refunds and/or replacements in cases of delay and/or loss in transit will be ONLY possible for orders with Standard mail and will not be offered for orders with Economy mail chosen!
Estimated Time of Delivery:
Economy
(
Europe
10-20 business days /
Rest of the world
15-45 business days )
Standard
(
Europe
7 - 10 business days /
Rest of the world
10-15 business days)
NOTE:
-
If you purchase several items you might be eligible for combined shipment discount in order to reduce shipment costs.
Please contact us, if you intend to purchase multiple items or if you already did, so we can review and adjust your total, if needed.
-
We
reserve our right to offer only tracked mail and/or better service to selected listings and countries and refuse posting Economy, even if that service has been selected during check-out (in such cases we will contact you before posting with alternative options)
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