Description: Soundlumia's Opinion The "textbook Heerlen sound" has been referenced in several Soundlumia E88CC listings, and many tube enthusiasts asked what all that means. So here is the answer: the late 1950s and very early 1960s tone, the beginning of over a decade's excellence in sound, the classic tonal template for all the great (and greater) Amperex/Philips/Valvo/Miniwatt tubes to be made in the years to come, the timeless Philips radio tone that many of us grew up listening to. The most distinctive sound feature of Holland 6922 is the transparent, natural and expansive midrange presentation, with a slight touch of warmth that illuminates your music. Every piece of music you play through these tubes sounds like from a vinyl record, whether your sound source is phono or not. The sound stage is spacious, deep and structured. Bass is incredibly deep but well controlled and feels as accurate as on super high-end German E88CC and CCa tubes. 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 Professional Tube Testing System with the following result: Tube 1: Measured transconductance(GM): 11.86/12.23 mA/V - 95%/98% (100% = 12.5 mA/V)Measured plate current(IA): 12.345/17.7 mA - 82%/118% (100% = 15 mA) Tube 2: Measured transconductance(GM): 12.63/14.14 mA/V - 101%/113% (100% = 12.5 mA/V)Measured plate current(IA): 13.815/18.772 mA - 92%/125% (100% = 15 mA) Tube 3: Measured transconductance(GM): 12.33/12.21 mA/V - 99%/98% (100% = 12.5 mA/V)Measured plate current(IA): 16.32/16.59 mA - 109%/111% (100% = 15 mA) Tube 4: Measured transconductance(GM): 13.03/11.61 mA/V - 104%/93% (100% = 12.5 mA/V)Measured plate current(IA): 17.707/16.537 mA - 118%/110% (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 The paint on these tubes has mostly worn off but the Amperex logo still can be seen. The close Heerlen date codes are perfectly visible on these tubes: ⊿2G1 ( ⊿ = Heerlen, 2 = 1962, G = July, 1 = Week 1 of the production month) PackagingNEW white tube boxes.Shipping Policy - US Shipping: Flat-rate USPS Ground Advantage (upgradable to flat-rate USPS Priority or FedEx 2nd Day for expedited delivery.) - International Shipping: Flat-rate USPS First Class International (upgradeable to flat-rate UPS Worldwide Expedited or DHL Express for expedited delivery.) Due to logistic issues with destination country's postal service, we are unable to ship to the following countries using USPS First Class: Armenia, Chile, China, India, Latvia, Mauritius, Mexico, Serbia, Slovenia, Tuvalu. If you are a buyer from one of these countries, you must contact us to arrange shipping prior to purchase. - 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 tax/GST/VAT 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: 200.25 USD
Location: Torrance, California
End Time: 2024-11-10T04:26:20.000Z
Shipping Cost: 5.5 USD
Product Images
Item Specifics
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money back or replacement (buyer's choice)
Brand: Amperex
Type: NOS Tube
Custom Bundle: No
Model: 6922 E88CC 6DJ8 ECC88 E188CC 7308 PCC88 CCa
Country of Manufacture: United States
Country/Region of Manufacture: United States