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PHILIPS

12AX7 / ECC83 NOS EVERETT by Philips Heerlen Matched Pair 1964 Short Gray Plates HOLLAND MADE

12AX7 / ECC83 NOS EVERETT by Philips Heerlen Matched Pair 1964 Short Gray Plates HOLLAND MADE

2 046,00 SEK
2 046,00 SEK
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12AX7 / ECC83 NOS EVERETT by Philips, Heerlen plant, Short Gray Plates Halo Getter MADE IN HOLLAND 1964

Matched Pair – AMPLITREX Tested – Vintage Holland Production – Low Noise & Microphonics

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 1:

  • Section 1: Gm = 1600 ; Ia = 1.1 mA
  • Section 2: Gm = 1700 ; Ia = 1.2 mA

Tube 2:

  • Section 1: Gm = 1800 ; Ia = 1.3 mA
  • Section 2: Gm = 1700 ; Ia = 1.3 mA
Additional Tests Performed:
  • Burn-in / Stability Test: 48h – OK
  • Microphonics: Low. Tested and compliant for use in hi-fi equipment and guitar amplifiers, even in the most sensitive audio stages.
  • Balance: Very good. The sections are consistent and well-aligned, making the tube also suitable for use as a phase inverter in hi-fi and instrumental applications.
  • Emission Quality: Excellent – Very strong and stable emission, without fluctuations.
  • Shorts and GAS: Absent.

Description:

Precious Matched Pair of 12AX7 / ECC83 NOS EVERETT produced by Philips in the Heerlen plant, authentic Dutch production from 1964, characterized by the classic Short Gray Plates with Halo Getter construction. The manufacturing code Δ4K3 indeed traces the production to the historic Philips plant in Heerlen, Holland, in November 1964.

The tubes branded EVERETT therefore feature original Philips Heerlen construction, particularly interesting for enthusiasts of vintage European ECC83s and for those seeking the character and construction quality of Dutch productions from the 1960s.

The pair has been carefully tested and selected in our laboratory using the Amplitrex AT-1000 Tube Tester, obtaining a VERY STRONG classification. The transconductance values of the four sections are between 1600 and 1800, with extremely consistent anodic currents between 1.1 and 1.3 mA. The balance is very good and the pair has also been selected for Low Noise & Microphonics, with strong, stable emission and free from anomalies.

Sonically, the Philips Heerlen ECC83s are particularly appreciated for a refined and musical reproduction, capable of combining warmth and naturalness with remarkable openness and definition. The mid-range is rich and articulate, the bass well-controlled, and the high frequencies detailed without being aggressive, with a wide and well-focused soundstage.

Ideal for hi-fi preamplifiers, phono stages, integrated amplifiers, tube DACs, and guitar amplifiers compatible with 12AX7 / ECC83. Thanks to the Low Noise & Microphonics selection, they are particularly interesting even in the most sensitive audio stages, while the excellent balance of the sections further expands their possibilities of use.

The tubes are NOS – New Old Stock, accurately tested and perfectly functional. The aesthetic conditions are good, with partially faded but still legible silkscreen printing, consistent with the age of the specimens.

A valuable Matched Pair of EVERETT by Philips Heerlen 12AX7 / ECC83 from 1964, genuinely tested and selected by Vacuum Tubes Treasures, ideal for those seeking authentic NOS Dutch ECC83s, strong, well-balanced, and selected for Low Noise & Microphonics.

Conditions:

  • Condition: NOS - New Old Stock - Tested and functional - Supplied in our custom box for optimal protection. 
  • Functionality: Perfectly operational.
  • Aesthetic conditions: Good – Markings partially faded, but still legible. Tube body in good condition. See photos for details.
  • Manufacturing Code: ???  Δ4K3 (Barely perceptible on one tube, absent on the other) - Δ → Heerlen (Holland), 4 (out of four digits) → 1964 - K → November 3 → Third week of the month

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
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