1 13

RAYTHEON

7025 / 12AX7 / ECC83 NOS RAYTHEON Matched Pair Long Black Plates Halo Getter Tubes USA

7025 / 12AX7 / ECC83 NOS RAYTHEON Matched Pair Long Black Plates Halo Getter Tubes USA

26,500 ISK
26,500 ISK
Sale Sold out
Shipping calculated at checkout.

7025 / 12AX7 / ECC83 NOS Raytheon Matched Pair Long Black Plates Halo Getter Tubes Made in USA

AMPLITREX Tested – VERY STRONG – Low Noise & Microphonics – Vintage American Raytheon 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 1:

  • Section 1: Gm = 1500 ; Ia = 1.0 mA
  • Section 2: Gm = 1600 ; Ia = 1.1 mA

Tube 2:

  • Section 1: Gm = 1600 ; Ia = 1.1 mA
  • Section 2: Gm = 1500 ; Ia = 1.0 mA
Additional Tests Performed:
  • Burn-in / Stability Test: 48h – OK
  • Microphonics: Very Low. Tested and suitable 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

Exceptional NOS pair of 7025 / 12AX7 / ECC83 Raytheon, produced in the United States in 1960 and carefully selected as a Matched Pair. Both specimens feature the sought-after Long Black Plates with Halo Getter construction, characteristic of Raytheon's American production during this period. The original codes 280C / 60-41 and 280C / 60-45 identify two tubes manufactured in the 41st and 45th weeks of 1960, respectively. A particularly desirable pair for those seeking authentic NOS American tubes, united by the same construction design and a highly precise electrical match.

The measurements performed with the Amplitrex AT-1000 highlight a particularly significant uniformity. The transconductance of the four sections ranges between 1500 and 1600 µmhos, with an identical average of 1550 µmhos for both tubes, very close to the nominal reference of 1600. The anode currents are also perfectly matched in their averages, equal to 1.05 mA for each specimen, with individual values ranging between 1.0 and 1.1 mA. This correspondence confirms an excellent match between the two tubes, accompanied by very good internal balance.

Both specimens passed 48 hours of burn-in and stability testing, maintaining a very strong and constant emission, without fluctuations, short circuits, or the presence of gas. The tests also confirmed very low noise and microphonic levels, which are particularly important for a tube like the 7025, also intended for the most sensitive amplification stages.

The Raytheon 7025 Long Black Plates are particularly appreciated in hi-fi preamplifiers, compatible phono stages, and guitar amplifiers, even in the V1 position. Their good sectional balance also allows their use as a phase inverter in compatible circuits. Raytheon production from this period is traditionally sought after by audiophiles for a musical presentation generally described as natural, detailed, and harmonically rich, with an expressive midrange and pleasant dynamic articulation.

The value of this pair lies in the combination of authentic 1960 Raytheon production, Long Black Plates construction, NOS condition, and perfectly matched electrical averages. The partially preserved original markings and good overall condition complete a set of particular interest. A carefully selected vintage Raytheon Matched Pair, ideal for enthusiasts who desire original American tubes, with verified stability, extremely low noise, and rigorously documented electrical characteristics.

Condition:

  • Condition: NOS - New Old Stock - Tested and working - Supplied in our custom box for optimal protection. 
  • Functionality: Perfectly operational.
  • Aesthetic condition: Good – Markings partially eroded, but still legible. Tube body in good condition. See photos for details.

Manufacturing Code:

  • 280C 60-41 → 280 → Raytheon Manufacturing Company, Waltham 54, Mass. ; 60-41 → RMA/EIA Open Date Code → manufactured in the 41st week of 1960
  • 280C 60-45 → 280 → Raytheon Manufacturing Company, Waltham 54, Mass. ; 60-45 → RMA/EIA Open Date Code → manufactured in the 45th week of 1960

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.