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Tuesday, November 24, 2015

15K Primary Impedance Output Transformer

High primary impedance (>10K Ohm) has always been a challenge for most winders. Unfortunately, such high primary impedance are required for older tubes, like 6J5G, 6SN7, 801A and etc, that have Rp (internal plate impedance) of ~4K Ohm.


Here's a preview of the upcoming 15K OPT for 801A and similar tubes: 


20Hz to 20kHz TOTALLY FLAT
Full bandwidth: 10Hz (-0.5dB) to 60kHz (-3dB), measured with 801A tube in actual performing circuit.

J&K Audio Design

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Level 0: link 1

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Level 3: depends on type, size and complexity. Email us for details.

Iso-trans: link 1, link 2

Power-trans: link 1

* Finished amplifiers, DACs, audio gadgets, upgrades and repairs - this is not our core business and we do it out of passion. We do not have fixed models, fixed price and we customize for each individuals. The sky is limit of creativity.

* Our product lines are always improving and increasing. If you do not see what you want, contact us!

* Please email for volume discounts, distributor and OEM pricing.

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