Siemens

Siemens E88CC 6922 Matched Pair in Original Boxes - A0 1# - Munich 1962/63 - NOS

$384.50 USD

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Perfect matched & balanced pair of vintage Siemens E88CC/6922 Audio Tubes - Munich 1962/63 - Strong NOS - Extremely Rare

Tubes Summary

Stronger than time! This is the classic beauty in sound, admired by audiophiles for almost 60 years and will still be our top choice in the next 60 years. Particularly, the early 1960s Siemens tone is considered the "reference sound" for serious classical listeners who need to upgrade the sound quality at phono stage.

Sound Characteristics

The airy and transparent sound produced by these vintage Siemens tubes has been unrivaled even to this day. The magically extended yet never tizzy highs, coupled with the slightly focused upper mid-range, deliver a clear presentation of the entire frequency spectrum, completed by the precise and deep controlled bass. And the most defining sound characteristic of Siemens E88CC tubes is their ability to retrieve the deepest levels of detail in sound, and these hidden sonic layers can go a long way to revealing the subtle ambient clues that help complete building a truly 3D holographic presentation. While as quiet and analytical as the best Telefunken E88CC tubes, Siemens E88CC's produce a warmer, smoother and more musical sound. To see how the two German brands in vintage tube sound compare to each other, please check out our full sound review of a 1963/64 Matched Pair of Telefunken E88CC tubes here: https://www.ebay.com/itm/266376181581

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

NO shorts or grid leakage. NO noise or microphonics.

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

Tube 1(left): 13,600/13,500 (109%/110%)

Tube 2(right): 13,000/13,000 (104%/104%)

Good tubes start at 7000 and new tubes (incl. NOS/NIB) 12,500 - 13,000, and the Mercury 2000's rated mutual conductance 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 stronger the tube is.

Appearance & Cosmetic condition

Despite some loss of paint on one of the tubes, this pair overall is in great cosmetic condition. The 3-line Munich date codes etched on the glass are visible on both tubes although you may need to look a bit closer to see them completely:

Tube 1: A0 1# 2K (A0 = E88CC, 1# = 1st gen. Munich production = 1960s, 2 = 1962, K = November)

Tube 2: A0 1# 3B (A0 = E88CC, 1# = 1st gen. Munich production = 1960s, 3 = 1963, B = Feburary)

Packaging

This pair of tubes will be packaged in Original Siemens E88CC tube boxes, secured by a hand-made paper ribbon (by courtesy of Soundlumia.)

Shipping Policy

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

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- Orders ship within 24 - 48 hours