1 18

AMPEREX

12AX7 / ECC83 Amperex Bugle Boy mC6 AMPLITREX Tested Long Plates Foil Getter '59

12AX7 / ECC83 Amperex Bugle Boy mC6 AMPLITREX Tested Long Plates Foil Getter '59

HK$2,316.00 HKD
HK$2,316.00 HKD
Sale Sold out
Shipping calculated at checkout.

12AX7 / ECC83 Amperex Bugle Boy mC6 Long Plates – Foil Getter – Heerlen 1959

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
  • Average 100%: Gm = 1600 ; Ia = 1.2 mA
  • Test Result: VERY STRONG

Tube :

  • Section 1: Gm = 1200 ; Ia = 1.1 mA
  • Section 2: Gm = 1400 ; Ia = 1.2 mA
Additional Tests Performed:
  • Burn-in / Stability Test: 48h – OK
  • Microphonics: Low. Tested and suitable for use in hi-fi equipment and guitar amplifiers, even in the most sensitive audio stages.
  • Balance: Good. The sections show consistent balance, fully compatible with use in hi-fi and musical amplifiers, in all applications where absolute symmetry between sections is not required.
  • Emission Quality: Excellent – Very strong and stable emission, without fluctuations.
  • Shorts and GAS: Absent.

Description

Fine 12AX7 / ECC83 AMPEREX Bugle Boy mC6, authentic Philips Heerlen Made in Holland 1959 production, featuring the sought-after Long Plates with Foil Getter construction, one of the most interesting and desired configurations among vintage Dutch ECC83s from the late 1950s.

The engraved code mC6 Δ9C identifies the historic Philips plant in Heerlen, Holland, and places production in March 1959. The famous Amperex Bugle Boy branding, combined with the Long Plates and Foil Getter, makes this example particularly interesting both for use in high-level audio systems and for those seeking authentic vintage European productions.

The tube has been carefully tested in our lab using the Amplitrex AT-1000 Tube Tester, achieving a VERY STRONG classification. The two sections measured respectively Gm 1200 / Ia 1.1 mA and Gm 1400 / Ia 1.2 mA, with excellent, very strong and stable emission. The balance is good and fully compatible with use in hi-fi and musical amplifiers.

It also passed a 48-hour Burn-in / Stability Test and was selected as Low Noise & Microphonics, making it suitable even for the most sensitive audio stages, including the V1 position, as well as preamplifiers, phono stages, and guitar amplifiers. No shorts, gas, or anomalies were detected.

Sonically, the Amperex Bugle Boy Long Plates Heerlen are particularly appreciated for a rich, airy, and musical sound, with natural and well-articulated mids, present but controlled bass, and open and detailed high frequencies. The soundstage tends to be wide and three-dimensional, with a fluid and refined presentation that has made these early Dutch productions particularly sought after by tube-rolling enthusiasts.

Ideal for hi-fi preamplifiers, phono stages, integrated amplifiers, line stages, DACs and tube buffers, and guitar amplifiers compatible with 12AX7 / ECC83, especially when the character of historical Philips/Amperex Heerlen productions is desired.

The tube is Vintage, carefully tested, and perfectly functional. The cosmetic condition is sufficient, with the labels almost completely faded, but the manufacturing code remains identifiable. It comes in our custom box for optimal protection.

A sought-after AMPEREX Bugle Boy mC6 12AX7 / ECC83 Long Plates Foil Getter Heerlen from 1959, genuinely tested and selected by Vacuum Tubes Treasures, ideal for those seeking an authentic vintage Dutch ECC83 that is very strong, Low Noise & Microphonics, and features the prestigious Long Plates/Foil Getter construction of early Heerlen productions.

Condition:

  • Condition: Vintage Tubes - Tested and fully functional. Supplied in our custom box for optimal protection.
  • Functionality: Perfectly operational.
  • Cosmetic Condition: Sufficient – Labels almost completely faded. See photos for details.
  • Manufacturing Code: mC6 (barely visible) Δ9C - Δ → Heerlen (Holland), 9 (on three digits) → 1959 - C → March 

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

View full details

  • 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.