You are bidding for one pair Amperex ECC186/12AU7/ECC82/7316 Philips label NOS Testing Super Rare. The tubes are tested NOS on my TV-7/U and sound wonderful in my system. It is super rare and sought after by many audiophiles world-wide.
The ECC186/7316 tube is much sought after and is considered by many to be one of the best sounding 12AU7 tube types ever made. This was Amperex' version of a lab grade ECC82/12AU7. This tube has spectacular width of sound, from the rumbly lows to the sparkly highs. It doesn't emphasize any particular region of sound, but walks a fine line between analytical and warm. Quite happy crashing through very complicated pieces. Clean sound down low and clean (not bright) highs.
What you see is what you get. Please ask me any question before bidding. Thanks a million
P/S: The shipping fees in the listing is by regular mail
(normally Vietnam post) taking from 12-25 days depending on buyers' local
customs. To some regions, it can take even longer than that. Besides, Vietnam
post is not always available to some countries in South America, Northern
Europe or Africa. Please ask me before paying. If you want to use express
shipping services like DHL, Fedex or UPS express taking 3-7 working days, you
have to pay an extra of around $60. Please let me know so that I can send you
an invoice. If the item(s) purchased may not arrive or be faulty, please don't
hesitate to contact me before opening cases on Ebay. I am more than willing to
reach to a solution and make you completely satisfied. Thanks a million