The 5K5PP86 push-pull audio output transformer is designed to deliver excellent performance with a variety of tubes, including EL84, PL84, UL84, and 6n43n-E. With a primary impedance of 5500 ohm plate-to-plate and secondary impedances of 4/6/8 ohm, this transformer provides a rated power of 20 watts.

Main Features:

• Tubes Versatility: Optimized for a variety of tubes, the 5K5PP86 transformer is ideal for audio projects requiring flexibility and reliable performance.
• Power and Reliability: With a rated power of 20 watts, this transformer delivers powerful and faithful sound reproduction, ensuring an extraordinary listening experience.

Practical Experience:

To learn more about the tubes compatible with the 5K5PP86 transformer, visit our dedicated page here and refer to the tube datasheet that shows the recommended biasing data below:

The photographs shown are indicative and may not exactly match the product supplied. The bandwidth measurements were taken in the actual circuit using the specific tube for which the transformer was designed. These measurements are performed at about 1 Watt RMS using the typical tube bias current. Note that once integrated into the respective circuits, the introduction of negative feedback—especially recommended with pentodes—can significantly extend the bandwidth and limit phase shifts across a wide audible range.

5K5PP86
	Type: Single Ended Designed for tubes: EL86 – PL84 – UL84 – 6n43n-E (*) Primary impedance: 5500 ohm Secondary impedances: 4/6/8 ohm Primary resistance: 157 ohm Max power: 20 Watt RMS Leakage inductance: 18 mH Bandwidth 15 Hz ~ 25 kHz -1 dB (*) It can also be used with other tubes.
	Dimensions (mm) L 85 H 100 S 104 F 68 F2 58

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Dimension diagram

The 3KPP34T push-pull audio transformer is designed to enhance the performance of EL34 tubes connected in triode configuration. With a primary impedance of 3000 ohm and secondary outputs of 4/6/8 ohm, this transformer delivers a maximum power of 15 watts.

Main Features:

• Compatibility with EL34 Tubes: Optimized for use with EL34 tubes in triode configuration, the 3KPP34T transformer ensures superior audio performance and exceptional sound fidelity.
• Configuration Flexibility: Multiple secondary outputs allow the transformer to adapt to the specific needs of your audio system, providing greater design flexibility.

Practical Experience:

Experience the power and versatility of EL34 tubes with the 3KPP34T audio transformer. With its robust construction and reliable performance, this transformer is the ideal choice for audio enthusiasts who want to get the most out of their EL34 tubes in a triode push-pull setup.

Everything listed in the various catalogs is subject to quantity discounts. If, along with output transformers, you purchase other items such as chokes, power transformers, or anything else for sale on this site, you will receive a substantial discount compared to the unit price, according to the proportions shown below.

Mod. 3KPP34T
	Type: Push-Pull Designed for tube: Push-Pull of EL34 connected as triode (*) Primary impedance: 3000 ohm Secondary impedances: 4/6/8 ohm Primary resistance: 116 ohm Maximum power: 15 Watt RMS Leakage inductance: 10 mH Frequency response: 28 Hz ~ 93 kHz -3 dB @ 1 watt (*)This does not preclude its use with other tubes.
	Dimensions (mm) L 85 H 100 S 104 F 68 F2 58

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Dimension caption

Are you a fan of Audio Innovations tube amplifiers or simply in need of a replacement part for your treasured amplifier? If so, it’s time to discover the Clone AI5-7-800, an audio output transformer compatible with Audio Innovations 500, 700, 800 and Classic 25 tube amplifiers.

The Clone AI5-7-800 was developed through high-quality reverse engineering, starting from the unwinding of a defective original transformer. This ensures that the Clone AI5-7-800 is a faithful 1:1 replica of the original, built with the same precision and attention to detail.

The output transformers of these tube amplifiers can fail due to various factors, including owner negligence such as lack of maintenance (like not replacing aged capacitors), or simply moisture combined with component aging. In particular, I analyzed a defective original transformer and found that the copper enamel had dissolved because of a chemical reaction with the adhesive of the gummed paper tape used to secure the copper windings.

If you are looking for a high-quality replacement part, faithful to the original and built to last, contact me to discuss your needs and get more information about the Clone AI5-7-800. Don’t settle for products of dubious quality: choose the transformer that guarantees the same precision and reliability as the original.

Wiring diagram of the new transformer connection to an AI800 circuit

For more information or to order your Clone AI5-7-800, you can contact me via my contact form. I am here to help you find the right product for your Audio Innovations amplifiers.