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RCA

7025 / 12AX7 RCA Short Gray Plates Halo Getter Tested Tube Made in USA '60s

7025 / 12AX7 RCA Short Gray Plates Halo Getter Tested Tube Made in USA '60s

457,00 DKK
457,00 DKK
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7025 / 12AX7 RCA Short Gray Plates Halo Getter Tested Tube Made in USA '60s

AMPLITREX Tested - Ultra Low Noise & Microphonics - Vintage American RCA Production

Description:

The 7025 RCA represents the premium, low-noise version of the renowned American 12AX7/ECC83. Developed for professional, hi-fi, and high-quality electronic instrumentation applications, the 7025 was intended for contexts where quietness, reliability, and operational stability were fundamental requirements.

This example is an authentic RCA Made in USA production from the 1960s, characterized by the classic construction with Short Gray Plates and Halo Getter, a configuration particularly appreciated for its tonal balance, natural reproduction, and long operational life.

The best RCA 7025s are considered among the most musical and versatile American tubes ever produced, capable of offering a rich, detailed, and engaging sound without artificial emphasis.

This tube has been carefully verified using AMPLITREX AT-1000, proving to be STRONG, stable, and particularly quiet.

The Ultra Low Noise & Microphonics selection also makes it particularly interesting for the most critical applications.

Tonal Characteristics and Sound Description

The RCA 7025 Short Gray Plates offer a balanced, refined, and pleasantly natural musical presentation.

Bass

Controlled and well-articulated bass, with excellent definition and a good sense of rhythm. The low end is present without becoming intrusive.

Mids

The midrange is warm, credible, and harmonically rich. Vocals are reproduced with great naturalness and excellent intelligibility.

Highs

The highs are open and well-extended, with refined and never aggressive detail. Environmental information emerges with fluidity and naturalness.

Dynamics

The dynamic response is prompt and musical, capable of precisely following variations in the recording.

Soundstage

The soundstage is well-organized, with good depth perception and correct instrument placement.

🎧 Use in Hi-Fi Stereo Amplifiers

This 7025 RCA is particularly suitable for:

  • Tube preamplifiers
  • Integrated hi-fi amplifiers
  • MM and MC phono stages
  • Tube DACs
  • Buffers and line stages
  • Restoration of vintage American electronics

The Ultra Low Noise & Microphonics classification also makes it particularly suitable for the most sensitive positions in the circuit.

🎸 Use in Musical Amplifiers

RCA 7025s are also highly appreciated by musicians for their balanced and musical character.

They offer:

  • Excellent note intelligibility
  • Rich and harmonic midrange
  • Low background noise
  • Natural and progressive response

Particularly interesting in the V1 position and in amplifiers that require a quiet and musical tube.

🎯 Note for Audiophiles and Collectors

Genuine RCA 7025 Made in USA represent one of the most sought-after versions of the American 12AX7 family.

The combination of:

  • Original USA RCA production
  • Short Gray Plates
  • Halo Getter
  • Ultra Low Noise & Microphonics selection
  • STRONG performance
  • 1960s vintage construction

makes this example particularly interesting for both quality audio use and collecting.

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: STRONG

Tube :

  • Section 1: Gm = 1500 ; Ia = 0.9 mA
  • Section 2: Gm = 1300 ; Ia = 0.7 mA
Additional Tests Performed:
  • Microphonics: Very Low. Tested and compliant for use in hi-fi and guitar amplifiers, including V1.
  • Balance: Good. The sections exhibit 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: Good Emission – Good and regular emission, suitable for any application
  • Shorts and GAS: Absent.

Conditions:

  • Condition: Vintage Tubes - Tested and perfectly working. Supplied in our custom box for optimal protection.  
  • Functionality: Perfectly operational.
  • Aesthetic condition: Adequate – Writings partly faded or illegible, general aesthetics with evident signs of age. See photos for details.
  • Manufacturing Code: not decipherable – RCA USA production, identifiable by 1960s construction characteristics

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
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📧 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.