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SVETLANA

KT88 SVETLANA Matched Pair Unused Original Boxes AMPLITREX Tested Made in Russia

KT88 SVETLANA Matched Pair Unused Original Boxes AMPLITREX Tested Made in Russia

Regular price $200.00 USD
Regular price Sale price $200.00 USD
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KT88 SVETLANA – Matched Pair – New / Unused – Original Boxes – AMPLITREX Tested – Made in Russia

AMPLITREX Matched Pair – VERY STRONG – Unused Tubes from Private Collection – Original Svetlana Boxes

Test Results

Tubes Tested on Amplitrex AT-1000 Tube Tester:

Voltage Test: Va = 450V ; Vg2 = 300V ; Vg = -34V
Average 100%:
Gm = 6.0 ; Ia = 50 mA
TEST RESULT:
VERY STRONG

  • Tube #4:  Gm = 5.95 ; Ia = 54.4 mA
  • Tube #5:  Gm = 6.05 ; Ia = 53.8 mA
Additional Tests performed:
  • Microphonics: Standard. Tested and suitable for use in hi-fi and guitar amplifiers.
  • Emission Quality: Excellent – Very strong and stable emission, without fluctuations.
  • Shorts and GAS: Absent.

Description:

Matched pair of KT88 Svetlana, Made in Russia production, with Svetlana brown base, selected for hi-fi and musical amplifiers compatible with KT88 where power, operational stability and consistency between the two output tubes are required.

The tubes have never been used, come from a private collection and are supplied in their respective original Svetlana boxes. They are not offered as historical NOS, but as new / unused tubes, tested and selected in our laboratory using the Amplitrex AT-1000 Tube Tester.

The pair achieved a VERY STRONG result, with very consistent values between the two units, stable electrical behavior, good uniformity of anode current and transconductance, no defects detected during testing and suitable matching for compatible push-pull applications.

From a sonic point of view, KT88 Svetlana tubes offer a solid, dynamic and well-controlled sound, with authoritative bass, natural mids, clean highs and a good ability to maintain order even at sustained volumes. The overall character is powerful, balanced and musical, suitable for both hi-fi applications and compatible instrument amplifiers.

Recommended for hi-fi amplifiers, push-pull power amplifiers, integrated amplifiers and musical amplifiers designed for KT88, where strong, stable and well-matched output tubes are required.

A genuinely tested and selected KT88 Svetlana Made in Russia pair from Vacuum Tubes Treasures, ideal for those seeking unused, strong and consistent power tubes, supplied in their original boxes.


Conditions:

  • Condition: Never used, from a private collection and supplied in their original Svetlana boxes. 
  • Functionality: Perfectly operational.
  • Aesthetic condition: Excellent - See photos for details.
  • Manufacturing Code:  not decipherable.

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

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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.