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HEINTZ & KAUFMAN

12AU7WA / E82CC / 6189 Heinz & Kauffman Triple Mica Black Plates Balanced Made in USA

12AU7WA / E82CC / 6189 Heinz & Kauffman Triple Mica Black Plates Balanced Made in USA

¥10,900 JPY
¥10,900 JPY
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12AU7WA / E82CC / 6189 Heinz & Kauffman Triple Mica Black Plates Square Getter Made in USA

Ultra Low Noise & Microphonics – “Gammatron” Series - Balanced Sections

Test Results:

Tube tested on AMPLITREX AT-1000 Tube Tester:

  • Test Conditions: Va = 250V ; Vg = -8.5V
  • Average 100%: Gm = 2200 ; Ia = 10.5 mA
  • Test Result: STRONG

Tube :

  • Section 1: Gm = 1800 ; Ia = 8.4 mA
  • Section 2: Gm = 1800 ; Ia = 8.6 mA
Additional Tests Performed:
  • Microphonics: Very Low. Tested and suitable for hi-fi use, including phono stages and guitar amplifiers, even in V1.
  • Balance: Both sections show consistent and well-aligned values, making the tube ideal as a phase inverter in both hi-fi and instrumental applications.
  • Emission Quality: Excellent – Very strong and stable emission, without fluctuations.
  • Shorts and GAS: Absent.

Description:

Prized 12AU7WA / E82CC / 6189 Heinz & Kauffman, authentic American production from the historical “Gammatron” series, characterized by robust Triple Mica, Black Plates, and Square Getter construction. A particularly interesting professional version of the 12AU7 family for those seeking a selected vintage USA tube that is quiet and boasts excellent balance between its two sections.

The Triple Mica construction adds an additional element of mechanical rigidity to the internal structure and, along with the Black Plates, indicates a production of remarkable quality, generally traceable to the late 1950s / early 1960s.

The tube has been accurately tested using the Amplitrex AT-1000 Tube Tester, achieving a STRONG classification. Both sections measured exactly Gm 1800, with anode currents of 8.4 and 8.6 mA: particularly consistent values that confirm an excellent balance of the two triodes. The emission is strong and stable, with no shorts, gas, or detected anomalies.

This specimen has also been selected for Ultra Low Noise & Microphonics, a particularly valuable characteristic for sensitive audio applications. The excellent balance between the sections also makes it suitable as a phase inverter, as well as for input stages, V1, preamplifiers, and compatible phono stages.

From a sonic perspective, this American construction offers a full-bodied, dynamic, and well-defined presentation, with natural and present mids, solid and controlled low frequencies, and a clean and detailed high range. The high silence and excellent consistency of the sections contribute to stable and focused reproduction, particularly interesting in high-level hi-fi systems.

Recommended for hi-fi preamplifiers, compatible phono stages, integrated amplifiers, line stages, DACs and tube buffers, phase inverters, and guitar amplifiers designed for 12AU7WA / E82CC / 6189 and compatible equivalents.

The tube is Vintage, tested, and perfectly functional. Aesthetic conditions are excellent, with well-preserved lettering and minimal signs of age. It is supplied in our custom box for optimal protection.

A sought-after Heinz & Kauffman “Gammatron” 6189 / E82CC / 12AU7WA Triple Mica Black Plates Square Getter Made in USA, genuinely tested and selected Ultra Low Noise & Microphonics by Vacuum Tubes Treasures, particularly interesting for those seeking a vintage American tube that is strong, extremely quiet, and beautifully balanced.

Condition:

  • Condition: Vintage - Tested and working - Supplied in our custom box for optimal protection. 
  • Functionality: Perfectly operational.
  • Aesthetic Condition: Excellent – Lettering excellently preserved, minimal signs of age. See photos for details.
  • Manufacturing Code: undecipherable – USA production, identifiable by construction characteristics. Late 1950s – early 1960s

Discover why our tubes are different →

Terms of Sale & Safety

Sales Terms & Product Safety

Each vacuum tube is carefully selected, tested, and verified in our laboratory before shipment. Where stated in the listing, test results, matching data, and declared characteristics refer to measurements performed using the specified test equipment and operating conditions.

Sound descriptions are provided for guidance only and reflect the characteristics generally associated with that particular tube type. Personal sound preferences, tube rolling, or perceived differences between audio systems do not constitute a product defect.

Before installation, please verify the tube’s electrical and mechanical compatibility with your equipment and follow the manufacturer’s instructions.

New production and NOS tubes are shipped with a tamper-evident security seal and internal technical documentation to ensure traceability of the product’s condition at the time of shipment.

Product Safety (GPSR)

Vacuum tubes are electronic components intended exclusively for use in compatible equipment and must be installed in accordance with the equipment manufacturer’s instructions.

Due to their historical or vintage nature, certain technical specifications may be based on original datasheets or equivalent technical documentation when documentation from the specific manufacturer is unavailable.

Use only with suitable equipment. Keep out of reach of children.

Shipping & Returns

Shipping & Returns

We ship worldwide using carefully selected express carriers and protective packaging specifically designed for vacuum tubes.

If you change your mind, you may exercise your right of withdrawal within 14 days of delivery, where applicable under the relevant consumer protection laws. The product must be returned complete with its original packaging and accessories, in the same commercial condition in which it was received. Return shipping costs are the responsibility of the customer.

Every returned item undergoes a technical inspection. Installation, use, tube rolling, or any other handling may reduce the product’s commercial value and may affect the refund amount, in accordance with applicable law.

If you believe the product has a lack of conformity, our laboratory will carry out the necessary inspections and apply the remedies provided by the applicable consumer protection legislation.

For further details, Customers are invited to consult the “Terms and Conditions” and “Refund Policy” sections of our website, or to contact us before placing an order.

Vacuum Tubes Treasures
www.vtt.store | www.vacuumtubestreasures.com
📧 info@vacuumtubestreasures.com

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  • ATTENTION PLEASE

    Please understand that the writing on the glass of vintage valves has become very delicate over the years and comes off easily. You must handle them with extreme care to avoid this. Wear and damage to the writing on the valves reduces their market value and causes damage. Please exercise extreme caution.

  • ATTENTION PLEASE

    We wish to inform you that any attempts to manipulate shipping destination information in order to obtain lower shipping rates may be considered fraudulent acts. Please provide accurate information and contact us if you have any concerns. We reserve the right to review and, if necessary, cancel orders that we deem to be in violation of our conditions. Thank you for your understanding and cooperation.