Amperex PQ 7308 = E188CC Matched Pair White Print USA 1966 Tektronix Checked NOS

Description: Product Summary Our best seller is back in stock - the Amperex USA PQ White Label! This listing is for a tightly matched pair with identical date code from 1966, one of the best years of Amperex USA and and very rare to find today. We have recommended PQ's to more than 20 wonderful patrons of the Soundlumia eBay store, who are enjoying these tubes in their class leading amplifiers from Audio Research, Ear, Schiit Audio and Cavalli etc. and are raving about the superb PQ sound around the world. Sound Qualities Among all the PQ tubes, the USA white print version (made in Hicksville, New York) is the most sought-after by serious audiophiles and tube enthusiasts. They are as sweet and smooth as the Amperex Holland PQ tubes, with even better detail and very spacious sound stage, which offers an amazing bird's eye view of the shape of your sound, so you know exactly how tall and wide the sound stage is. The tone is warm yet lively, mids are forward but also expansive like what you hear on their cousins from the Holland factory, bass is punchy but not heavy. We have recommended them to so many satisfied customers that we have given them a nick name "sound purifier" - the sound that comes from these tubes has absolutely no edginess, glassiness or harshness, and you hear nothing but the soul of your music and all of it. They are the best tubes to to put in the phono stage to "purify" your sound in my opinion. As to vocals, I have no further comment than that the best Mullards were actually sourced from Holland PQ's (Made in Gt. Britain w/ Heerlen date codes) and USA PQ's beat the Holland ones in vocals period. Listening to Righteous Brothers' Unchained Melody through these PQ tubes should be on your bucket list, no matter what type of music you enjoy. Professional Sound Evaluation The pair worked wonderfully and sounded terrific in our professional studio setup for monitoring. - Input: Cambridge Audio CXC V2 dedicated CD transport + Schiit Audio Bifrost 2 Multibit DAC - Amplification: Liquid Platinum Tube Amplifier by Alex Cavalli - Output: Focal Clear MG Pro open-back headphones Our full tube sound review was written 100% based on the actual listening experience while this pair of tubes were running in the system described above. Professional Tube Testing This set was tested and certified by RoeTest V11 tester with the following result: Tube 1: Measured transconductance (GM): 14.1/13.24 mA/V - 113%/106% (100% = 12.50 mA/V)Measured plate current (IA): 18.899/17.279 mA - 126%/115% (100% = 15 mA) Tube 2: Measured transconductance (GM): 13.31/12.74 mA/V - 106%/102% (100% = 12.50 mA/V)Measured plate current (IA): 16.821/15.201 mA - 112%/101% (100% = 15 mA) NO shorts, leakage or gas. NO noise or microphonics. Curve trace is also included in the original RoeTest report. Appearance & cosmetic condition This pair is extra rare because at least 90% of the inscription (Amperex & Made in USA lettering and PQ logo) is well preserved, and the identical acid-etched Hicksville date codes are perfectly visible on both tubes: VR5 *6K (VR = 7308/E188CC, * = Amperex New York, 6 = 1966, K = November) Packaging This pair of tubes will be packaged in NEW reproduction Amperex tube boxes. Shipping Policy - US Shipping: Flat-rate USPS Ground Advantage - International Shipping: (Please read carefully) USPS First Class International is used for all countries EXCEPT: Armenia, Chile, China, India, Latvia, Mauritius, Mexico, Serbia, Slovenia, Tuvalu, and Vietnam. If you prefer to use a different carrier or shipping service, please contact us first so we can establish shipping rates before you make payment. If you are a buyer in one of the excluded countries, you must contact us prior to purchase to arrange shipping(USPS Priority recommended), or we may not be able to fulfill your order using standard shipping due to our concern of undelivered packages or shipping delays in your country. - Same day shipping: Orders placed by 2:00PM US Pacific Time on weekdays are posted on the same day, otherwise the next business day. - Combined shipping available - request invoice for total before making payment or receive shipping credit after order ships. Return Policy - Please READ carefully Returns are acceptable if we made a mistake by delivering you wrong or defective products. Tubes we sell are guaranteed to work because we run professional tests and sound evaluation TWICE: before they are approved for listing AND before we ship them to customers. So the "defective item" case doesn't exist and please do not bother trying - this type of returns will NOT be accepted without proof that tubes are faulty and we will open disputes with eBay. Sound experience is very subjective and we do NOT accept returns because you do not like the tube's sound signature or because you changed your mind about your purchase. Please contact us to work things out before submitting return requests claiming "item is defective" or "item not as described" or "just didn't like it" or "changed my mind." Tube rollers abusing the return system will be reported to eBay immediately and negative feedback will be left to your account - that's guaranteed. We have already opened several dispute cases to report abusive buyers and eBay has always ruled in our favor. International buyers who request return or refund claiming your country's import duties or sales taxes/VAT/GST are too high will be reported to eBay immediately for dishonesty and will be permanently blacklisted from purchasing from Soundlumia. We are committed to working closely with eBay to help rid the marketplace of dishonest, unjust, unreasonable, abusive buyers that are detrimental to the vintage tubes market and the audiophile community.

Price: 494 USD

Location: Torrance, California

End Time: 2024-11-30T07:44:04.000Z

Shipping Cost: 5.5 USD