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Product Summary
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.
Sound Qualities
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 SoundEvaluation
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:FocalClear 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
Both tubestestedStrong NOS(110%+ nominalmutual conductance)on a Mercury 2000 tube tester with the following result (mutual conductance inuMhos):
Tube 1:13,600/13,000 (109%/104%)Tube 2:14,500/15,000 (117%/120%)
Good tubes start around7000and new tubes (incl. NOS/NIB)12,500 - 13,000, and Mercury 2000\'s rated mutual conductance (nominal) for new tubes is12,500. Test result can also be seen in the pictures.In case you wonder what all these numbers would mean to your sound experience, it\'s actually quite straightforward: mutual conductance directly translates toatube\'s ability to amplify soundso the higher the numbers the stronger.
Appearance & cosmetic condition
Beside the world-class sound characteristics, we treasure this pair because the pristine condition the two tubes are in - nearly 100% of the paint is intact, and the identical Amperex New York date codes etched on glass are perfectly visible:
⊿4B2(⊿= Heerlen,4 = 1964, B = Feb, 2 = Week 2 of the production month)⊿5H3(⊿= Heerlen,5 = 1965, H = August, 3 = Week 3 of the production month)
Packaging
This pair of tubes will be packaged inNEWreproductionAmperex tube boxes, secured by a hand-made paper ribbon (by courtesy of Soundlumia.)
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.Soundlumia-sponsored 3-day guaranteed worldwide delivery program($35 flat rate for ALL destinations in the world) via DHL Express is highly recommended.
- Same day shipping: Orders placed by2:00PM US Pacific Timeon 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 orderships.
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 . 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 immediately and negative response will be left to your account - that\'s guaranteed. We have already opened several dispute cases to report abusive buyers and 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 immediately for dishonesty and will be permanently blacklisted from purchasing from Soundlumia. We are committed to working closely with to help rid the marketplace of dishonest, unjust, unreasonable, abusive buyers that are detrimental to the vintage tubes market and the audiophile community.
