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Sunday, April 3, 2016

J&K User Comments

A user of ours in USA had just posted his creation on in Audio Asylum.

801A Direct Heated Single Ended Triode Amplifier

"Initial impressions - clean tops and mids, and the lows are nice and tight. J&K audio xformers give this tight sound to the lows."

Direct link below:


http://audioasylum.com/forums/set/messages/8/81236.html

Link to the output transformers used:

http://jandkaudiodesign.blogspot.sg/2015/12/801a-output-transformer.html

Primary impedance:             15KΩ

Secondary taps:                     0-4-8Ω
Primary DCR:                         570Ω
B-P12

Secondary DCR:                    0-4 Ω (0.3Ω); 0-8 Ω (0.42Ω)

Primary inductance:              135HDC bias at 30mA20Hz5Vrms
Max primary current:              50mA (recommended >= 30mA)
Matching

DCR:                                          <2% (<1Ω)

Primary inductance:                <5% (<3H)
Frequency response (in circuit)

          20Hz (-0.26dB) – 1kHz(0dB) – 20kHz(-0.5dB)
          10Hz (-0.5dB)   – 1kHz(0dB)  – 55kHz(-3dB)
 
J&K Audio Design
4/4/2016

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* 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.  
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Product Lists

Product Lists

Level 0: link 1

Level 1: link 1, link 2, link 3, link 4

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

Iso-trans: link 1, link 2

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* 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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