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Seller Store frankshaohuawang
(1008) 100.0%,

Location: Torrance, California
Ships to: US,
Item: 266824816395

Restocking Fee:No
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)
Philips:Philips
Type:Preamp Tubes
Custom Bundle:No
ECC82 12AU7:ECC82 12AU7
UPC:Does not apply
Country/Region of Manufacture:Netherlands

Product SummaryThe “textbook Heerlen sound” has been referenced in several Soundlumia listings of Holland 12AU7 tubes, and many tube enthusiasts asked what that all means. So this 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 Characteristics The most distinctive sound feature of the Heerlen ECC82’s 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 the high end German ECC82’s (Siemens, Telefunken, Valvo etc.) We would recommend these as an excellent alternative if you are seeking the high end Holland ECC82 tubes that can deliver the legendary Philips house sound flawlessly. 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: Woo Audio WA7 Fireflies (3rd gen) Balanced Headphone Amplifier – 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 testing & sound evaluation This set was tested and certified by RoeTest V11 tester with the following result: Tube 1: Measured transconductance (GM): 2.13/2.03 mA/V – 97%/92% (100% = 2.20 mA/V)Measured plate current (IA): 10.727/10.555 mA – 102%/101(100% = 10.50 mA) Tube 2: Measured transconductance (GM): 2.31/2.15mA/V – 105%/98% (100% = 2.20 mA/V)Measured plate current (IA): 12.85/11.147mA – 122%/106% (100% = 10.50 mA) NO shorts, leakage or gas. NO noise or microphonics. Curve trace is also included in the original RoeTest report. Appearance & cosmetic condition We treasure this trio for its excellent cosmetic condition – nearly 100% of the paint is well preserved. The identical date code of Heerlen factory etched on glass is perfectly visible on both ⊿0I4 (𝛥 = Heerlen, Holland, 0 = 1970, I = September, 4 = Week 4 of the production month)⊿1B4 (𝛥 = Heerlen, Holland, 1 = 1971, B = February, 4 = Week 4 of the production month) Packaging This pair of tubes will be packaged in new white boxes. Normal 0 false false false EN-US X-NONE X-NONE

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