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Monday, June 13, 2016

811 Tube Amplifier - Review

We were contacted by a very, very young chap (17 years old - the youngest we have come across for one that build tube amplifiers!) that has built quite a number of tube amplifiers to supply him a pair of cost effective output transformer for his class A2 811 tube amplifier. Such a brilliant young chap with great potential in tube amplifier or audio world!

It just so happened that we have a used Vintage Series (in between Level 0 and Level 1, obsolete now, being replaced by ALIS, but still can be custom made per request) Pri: 3.5K 90mA SE output transformer with EI Z11 on hand and we shipped it to him for 50% of the list price. The Vintage Series were designed with reference to various famous vintage output transformers and possessed very warm and good midrange, with decent highs and lows. 

We shipped it to him after a little chat over Facebook and within a day or two, he has completed his upgrade! Talk about lightning fast response! Here are his comments on our OPTs and als some pictures of his creation. For those interested for more up close pictures, please visit our Facebook page at ->

For those that stays near Melaka (Kuala Lumpur, Melaka, Negeri Sembilan, Johor and etc), Malaysia, if you would like to custom make tube amplifiers, please let us know so we can pass his contacts to you.

811A Tube Amplifier

811A Tube Amplifier Pictures

811A Class A2 - 10W

J&K User Comments

811A Tube Amp

Vintage Series Output Transformer
J&K Audio Design

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Product Lists

Product Lists

Level 0: link 1

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

Level 2: link 1, link 2, link 3, link 4, link 5, link 6, link 7, Link 8, link 9

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!

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