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AMPEREX

12AX7 / ECC83 NOS AMPEREX Bugle Boy Short Plates Large Halo Getter MADE IN HOLLAND '60s

12AX7 / ECC83 NOS AMPEREX Bugle Boy Short Plates Large Halo Getter MADE IN HOLLAND '60s

€179,90 EUR
€179,90 EUR
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12AX7 / ECC83 NOS Amperex Bugle Boy Short Plates Large Halo Getter Tested Tubes MADE IN HOLLAND '60s

AMPLITREX Tested – VERY STRONG – Low Noise & Microphonics – Vintage Heerlen Production

Test Results:

Tube tested on AMPLITREX AT-1000 Tube Tester:

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

Tube:

  • Section 1: Gm = 1800 ; Ia = 1.2 mA
  • Section 2: Gm = 1600 ; Ia = 1.1 mA
Additional Tests Performed:
  • Burn-in / Stability Test: 48h – OK
  • Microphonics: Very Low. Tested and compliant for use in hi-fi equipment and guitar amplifiers, including the most sensitive audio stages.
  • Balance: Very good. The sections are consistent and well-aligned, making the tube suitable for use as a phase inverter in hi-fi and instrument applications.
  • Emission Quality: Excellent – Very strong and stable emission, without fluctuations.
  • Short Circuits and GAS: None.

Description:

Fine example NOS 12AX7 / ECC83 Amperex Bugle Boy, produced at the historic Philips factory in Heerlen, Netherlands, in February 1962. The tube features the sought-after Short Plates with Large Halo Getter construction, characteristic of the highly regarded Dutch ECC83 tubes of this period, accompanied by the famous Amperex Bugle Boy screen printing. A particularly desirable combination for audiophiles and collectors seeking authentic vintage European tubes, expressing the prestigious Philips Heerlen manufacturing tradition.

The measurements performed with the Amplitrex AT-1000 highlight VERY STRONG electrical performance, with transconductances of 1800 and 1600 µmhos, respectively, corresponding to 112.5% and 100% of the nominal reference of 1600. The average transconductance therefore reaches 1700 µmhos, 6.25% higher than the reference value. The anode currents are 1.2 and 1.1 mA, with an average of 1.15 mA, extremely close to the nominal reference of 1.2 mA. The two sections show an overall very good balance, with a small transconductance difference and particularly close anode currents.

The tube passed 48 hours of burn-in and stability testing, maintaining a very strong and even emission, without fluctuations, short circuits, or the presence of gas. Particularly noteworthy is the Low Noise & Microphonics selection, with very low noise and microphonic levels, verified during testing. An important feature for use in the most sensitive audio stages, where silence, stability, and emission quality are fundamental requirements.

The Amperex Bugle Boy Short Plates find application in hi-fi preamplifiers, compatible phono stages, integrated amplifiers, and guitar amplifiers, including input stages and phase inverter circuits compatible with the detected balance. The Philips Heerlen production of the 1960s is traditionally appreciated by audiophiles for a musical presentation generally described as warm, natural, and harmonically refined, with an expressive midrange, well-articulated bass, and open, detailed high frequencies.

The value of this specimen lies in the authentic NOS Amperex Bugle Boy production, the sought-after Short Plates with Large Halo Getter construction, and the excellent documented electrical performance. The original engraved codes I65 / ⊿2B2 identify, according to their interpretation, a production at the Philips factory in Heerlen dating back to the second week of February 1962. The partially eroded, but still legible screen printing, and the good overall condition testify to the passage of time without compromising the verified functionality. An authentic Amperex Bugle Boy NOS Made in Holland, carefully tested and selected, for those seeking an original ECC83 with very strong emission, low noise, and identifiable historical origin.

Condition:

  • Condition: NOS - New Old Stock - Tested and working - Supplied in our custom box for optimal protection. 
  • Functionality: Perfectly operational.
  • Aesthetic condition: Good – Lettering partially eroded, but still legible. Tube body in good condition. See photos for details.
  • Manufacturing Code: Amperex Bugle Boy ECC83 / 12AX7, produced at the Philips factory in Heerlen, Netherlands, datable to the second week of February 1962, according to the interpretation of the engraved production codes I65 / ⊿2B2.

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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.

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