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MULLARD

12AX7 / ECC83 Mazda Valve Short Grey Plates Halo Getter Low Noise & Mic England BVA

12AX7 / ECC83 Mazda Valve Short Grey Plates Halo Getter Low Noise & Mic England BVA

$124.00 CAD
$124.00 CAD
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12AX7 / ECC83 Mazda Valve – Short Gray Plates – Halo Getter – Made in England BVA

AMPLITREX Tested – VERY STRONG – Low Noise & Microphonics – Vintage British ECC83

Description

12AX7 / ECC83 Mazda Valve, Made in England BVA production, selected for compatible hi-fi and musical applications where British sonic character, low noise, and operational stability are required.

British Mazda ECC83s are valued by enthusiasts for their careful construction, good production consistency, and a balanced, natural, and musical sound. This version features Short Gray Plates and a Halo Getter, a classic configuration of British production of that era.

The tube has been tested in our lab using the Amplitrex AT-1000 Tube Tester, with a VERY STRONG result, and has been selected as Low Noise & Microphonics, an important characteristic for sensitive audio applications.

Aesthetically, it is in good vintage condition. As visible in the photographs, the original branded print is no longer present, but the internal structure is well preserved and retains the charm of authentic vintage British ECC83s.

Sonically, it offers a refined, natural, and well-controlled sound, with tidy bass, present and musical mids, and sweet and well-integrated highs. The overall character is fluid, balanced, and pleasant, particularly suitable for extended listening sessions and systems where musicality is sought more than artificial brilliance.

Suitable for hi-fi preamplifiers, line stages, compatible phono stages, integrated amplifiers, driver stages, vintage, and modern equipment compatible with 12AX7 / ECC83. Also usable in guitar amplifiers, tube preamplifiers, and studio equipment.

A genuinely tested ECC83 Mazda Made in England BVA from Vacuum Tubes Treasures, ideal for those seeking a quiet, strong, vintage British tube with a natural sound character.

Test Results:

Tube tested on AMPLITREX AT-1000 Tube Tester:

  • Test Conditions: Va = 250V ; Vg = -2V
  • Average 100%: Gm = 1600 ; Ia = 1.2 mA
  • Test Result: VERY STRONG

Tube:

  • Section 1: Gm = 1400 ; Ia = 0.9 mA
  • Section 2: Gm = 1500 ; Ia = 1.2 mA
Additional Tests Performed:
  • Microphonics: Low. Suitable for many hi-fi and musical applications, particularly in line stages, drivers, and non-overly critical preamplification positions.
  • Noise: Low and well controlled. Quiet operation in hi-fi and musical amplifiers in designated positions.
  • Balance: The sections are not perfectly aligned. The tubes are suitable for use in hi-fi in non-critical stages (input or driver) and in guitar amplifiers. Not recommended as a phase inverter or in applications requiring strict balance between sections.
  • Emission Quality: Excellent – Very strong and stable emission, without fluctuations.
  • Shorts and GAS: Absent.

Conditions:

  • Condition: Vintage Tubes - Tested and fully functional. Supplied in our custom box for optimal protection. 
  • Functionality: Fully operational.
  • Cosmetic Condition: Excellent – Markings are excellently preserved, minimal signs of age. See photos for details.

Manufacturing Code: absent, identifiable by construction characteristics.
Type: ECC83 / 12AX7, revision I62
Factory / Supply: Thorn-AEI / Ediswan, Mullard supply
Dating: British production from the 1960s

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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.