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Mullard E188CC 7308 Preamp Tubes Matched Pair - Holland 1964 - Same code - NOS

Mullard E188CC 7308 Preamp Tubes Matched Pair - Holland 1964 - Same code - NOS

Regular price $430.00 USD
Regular price Sale price $430.00 USD
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Perfect matched pair of vintage Mullard E188CC audio tubes - Made in Holland - 1964 - Identical Date Code - Very Rare

Tube 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

Both tubes tested Strong NOS (110%+ mutual conductance) on a reliable Mercury 2000 tube tester with the following result (mutual conductance both in uMhos and in percentage of nominal):

Tube 1: 13,500/14,100(108%/113%)
Tube 2: 14,000/14,100(112%/113%)

Good tubes start at 7000 and new tubes (incl. NOS/NIB) 12,500 - 13,000, and the Mercury 2000's rated mutual conductance (nominal) for new tubes is 12,500. Test result can also be seen in the pictures. In case you wonder what all these numbers mean to your sound experience, it's actually quite straightforward: mutual conductance directly translates to a tube's ability to amplify sound so the higher the numbers the better. 

Appearance & cosmetic condition

We treasure this pair also because of the pristine condition of both tubes (clear inscription and clear date codes), which is amazing given the tubes' age. What makes this pair even more rare is the identical date code on both tubes: delta 4C1 (delta = Heerlen, 4 = 1964, C = March, 1 = Week 1 of the production month)

Shipping Policy 

- US Shipping: Flat-rate($5.50) USPS Ground Advantage for ALL states.

- International Shipping: Flat-rate ($20.00) USPS First Class International for ALL countries.

 - Orders ship within 24 - 48 hours
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