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“WE SPECIALIZE IN TONE.”

For your consideration is one (1) 'TESTS NOS' TELEFUNKEN AUDIO TUBE with 17mm Long Smooth Gray Plates, Halo Getter, and the Etched-Glass Diamond Bottom.  Tube is branded "Mazda/Belvu,' but is a German Telefunken.


STRONG B&K 707 Test Results  

100%/90%

MIN GOOD:  65/65+       NEW/NOS:  90/90+


This tube tested NOS STRONG on a recently calibrated, upgraded and modified B&K 707 DYNAMIC MUTUAL CONDUCTANCE tube tester where a NEW/NOS Tube for this type is 90+ and a Good tube is 65+ Tubes passed all frame, grid, leakage, plate and noise tests.  (Please See Note About Tube Testing Below).



INTERNATIONAL CUSTOMERS PLEASE READ

This item is available through FIRST CLASS INTERNATIONAL POST, which doesn't provide tracking to most countries.  If you would like tracking and registration, it is available for an additional fee.  

If you want tracking, please MESSAGE US after purchase, and we will send you a revised invoice with the new shipping cost. 

 Please Check Out Our Tubeguide.


Please check out our other items including Selected NOS MATCHED AMPEREX HOLLAND 12AX7 ECC83, NOS Ei SIEMENS ROHRE 12AX7NOS MULLARD UK 12AX7 ECC83, NOS TUNGSRAM 12AX7 ECC83TELEFUNKEN 12AX7 ECC83, TELEFUNKEN 12AT7 ECC81, NOS BEL PHILIPS 12AX7 ECC83 and much more!


 COMBINED DOMESTIC SHIPPING for up to 4 PAIRS at no extra charge.


'DEFECTIVE' ITEMS AND 'ITEMS NOT AS DESCRIBED'

Descriptions of tubes in our listings as having a certain 'tone' or being 'quiet' are descriptions of that tube type in general, and not the specific tube in the listing.  Tubes are ONLY considered 'defective' if they arrive broken or shorted (no sound).  Terms like 'microphonic,' 'hums' or 'noisy' are subjective descriptions (since a tube will perform differently in every circuit), and in no way constitute a 'defective' item or an 'item not as described'.  A tube is considered 'item not as described' ONLY when you receive a different brand or type of tube than what was purchased.  Please see RETURN POLICY BELOW.

RETURN POLICY

100% SATISFACTION-GUARANTEED RETURN POLICY. 

We want our valued Customers to be happy.  If you have any questions about returns, please message us.  Thank you for your time and consideration.

Testing – How We’re Different

We carefully screen all tubes we sell for authenticity, and also listen to the tubes to judge sound quality.  We discard 20-25% of tubes other sellers may call “good,” if they don’t pass our screening standards.  All pre-amp tubes are tested for emissions, shorts, gas, and leaks on high-quality, calibrated Mutual Conductance tube testers with line level adjustment, to tweak unit calibration for every tube we test.  And whenever possible, we include photos of the test results of your tube so you can see for yourself.  Be certain that you are purchasing quality, premium items.

While we offer an unconditional money-back guarantee for every tube we sell, we cannot guarantee that you will get the same test results at home, since there are too many variables involved with vintage tube testing, which is more of an art than a science. (For example, differing home voltages can give different readings on the same tube with the same brand and same model of tube tester). You can return a tube for any reason.

Shipping:

COMBINED SHIPPING within the United States for up to 5 tubes via USPS First Class Mail.  Most packages will arrive in 2-3 days within the Continental United States.  Our stated processing time is 2 Business Days, although we ship packages out the next day whenever possible.  International Shipping is via first Class Mail for a Calculated-rate fee for up to 5 pre-amp tubes. Packages shipped by First Class Mail will usually arrive in Europe within 7-12 days, and to Latin America within 7-18 days depending on your Country’s Customs Regulations. If you have any shipping questions or requests, please email us and we will accommodate you.

“We Specialize in Tone”

We strive for 100% Customer Satisfaction and the best Detailed Seller Ratings.  If you are unsatisfied with a tube for any reason, please return it within 14 days for a refund. (Buyer pays return shipping). If you have any problems or concerns, please email us prior to leaving Feedback and we will resolve the issue.