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TUBEMUSEUM NEW YORK

NOS SYLVANIA 7025 MATCHED TRIO! 

GREAT for GUITAR AMPS! RECOMMENDED FOR ALL 12AX7 SLOTS

ULTRA-LOW-NOISE NEW OLD STOCK! 

You would have to buy about 20 Sylvania 7025 tubes, if you could even find that many, to get 3 tubes all testing like these!

 TUBE MUSEUM QUALITY

SYLVANIA 7025 (12AX7A) PLATINUM LOW-NOISE TUBE AMPLITREX BEST TEST RESULTS TRIO - Picture 1 of 12

 NOS SYLVANIA TRIO
THREE (3) REAL 7025 TUBES!
7025 = 12AX7A

  • johakos20 (102) - Feedback left by buyer.
    Past month
    Verified purchase
    This is really wonderful 12AX7A variant. No audible noise even if used as preamplifier tube for mid gain amplifiers. Tone is detailed yet not harsh at all, really round and warm instead. Currently tonewise my favourite 12AX7A tube. Visually like in the picture and condition is like described. Carefully packed therefore did not suffer any damage during shipping . Thank you very much!
SYLVANIA 7025 12AX7A PLATINUM LOW-NOISE TUBE with AMPLITREX BEST TEST RESULTS - Picture 3 of 11

REAL 7025 tubes with just the "7025" in the glass codes
as displayed in these pictures

SYLVANIA 7025 (12AX7A) PLATINUM LOW-NOISE TUBE AMPLITREX BEST TEST RESULTS TRIO - Picture 5 of 12

REAL MARKED "7025" = Made in USA 

CERTIFIED ULTRA-LOW-NOISE SPECIMENS WITH WARMER TONE

SYLVANIA 7025 12AX7A PLATINUM LOW-NOISE TUBE with AMPLITREX BEST TEST RESULTS - Picture 8 of 11

tube 1: 1,800 / 1,800 uMhos = 112%/112% (mA/V)
1,2 / 1,2 mA (100%/100%)

tube 2: 1,800 / 1,800 uMhos = 112%/112% (mA/V)
1,2 / 1,2 mA (100%/100%)

tube 3: 1,800 / 1,800 uMhos = 112%/112% (mA/V)
1,2 / 1,2 mA (100%/100%)

All tubes test similar with
zero gas / zero leaks! 
7025: One of the quietest 12AX7 variant tube in the world!

SYLVANIA 7025 12AX7A PLATINUM LOW-NOISE TUBE with AMPLITREX BEST TEST RESULTS - Picture 10 of 11


TESTED AT REAL-WORLD 500V POWER LEVELS ON AMPLITREX AT-1000 

All our tubes are Tested on Amplitrex AT1000 Digital Tube Test System

PASSED THE AMPLITREX DIGITAL TESTS

Low-Noise Tested Microphonic Free

No H-to-K Leakage (Heater-to-Cathode) No leaks (0) zero!

Actual tube was tested on the State-of-the-Art AMPLITREX AT-1000 Electron Tube Test System

SYLVANIA 7025 (12AX7A) PLATINUM LOW-NOISE TUBES BEST TEST RESULTS TRIO 1800/1800 - Picture 13 of 13

CERTIFIED ULTRA-LOW-NOISE MUSEUM SPECIMENS

TubeMuseum tested tubes takes the guesswork out of the process of selection delivering you the best Audio tubes that there possibly can be.   



Terms of Auction

International Buyers - Please note: 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. 

We do not guarantee that your tester, or your tester's measurements will be the same as the Amplitrex AT-1000. Older testers, different testers, or the same tester may report different test measurements, and may not measure the same tube meaningfully (due to current dependency), accurately (due to calibration difficulties) or consistently (due to internal circuit drift) There is no warranty or returns based on what any other tube tester reports.

THE COST OF ALL USA SHIPPING INCLUDES INSURANCE, TRACKING NUMBER AND DELIVERY CONFIRMATION


PRICE IS FOR THE 3 TUBES

MATCHED TRIO!

TUBEMUSEUM NEW YORK