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Mullard
Mullard E188CC = 7308 Matched Pair in Orig. Box - Heerlen, NL 1962/64 - NOS
Mullard E188CC = 7308 Matched Pair in Orig. Box - Heerlen, NL 1962/64 - NOS
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Product Summary
This is not a listing about audio tubes but an invitation to hear the the sweetest voice on Earth. Yes no other tubes can deliver vocals like the Mullard's, whether they're from Blackburn, Mitcham, or Heerlen, and that's a fact. The Mullard labeled and Holland made E188CC tubes are extremely hard to find today and are being hunted to extinction by audiophiles and sound professionals.
Sound Characteristics
Be assured - you will not miss one single bit of the legendary Heerlen sound just because the tubes are labeled Mullard. The proud delta symbol in the date code tells you this is 100% "textbook" natural sound from Heerlen: warm and lively tone with infinitely expansive midrange and nice extension in both top and low frequencies. The technical advantages of the E188CC/7308 design on these tubes have taken sound to the next level: you get more forward vocals and a wonderful airy top end, super large imaging and incredibly spacious sound stage. Like any other E188CC/7308 tubes, they have low noise to the vanishing point, and that makes these tubes also one of the go-to tubes for details & clarity.
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): 13.95/13.23 mA/V - 112%/106% (100% = 12.5 mA/V)
Measured plate current (IA): 19.379/18.081 mA - 114%/106% (100% = 17 mA)
Tube 2:
Measured transconductance (GM): 12.79/12.25 mA/V - 102%/98% (100% = 12.5 mA/V)
Measured plate current (IA): 16.206/15.539 mA - 95%/91% (100% = 17 mA)
NO shorts, leakage or gas. NO noise or microphonics.
Curve trace is also included in the original RoeTest report.
Appearance & Cosmetic condition
Silkscreen: 95% - 100% (Pristine)
Date code(s):
⊿4C1 (⊿ = Heerlen, NL, 4 = 1964, C = March, 1= Week 1 of production month)
⊿2L2 (⊿ = Heerlen, NL, 2 = 1962, L = December, 2 = Week 2 of production month)
Packaging
Original Mullard E188CC tube boxes.
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