Introducing you Mitchel's minimalist Préamplifier

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I have bougth a kit.... from Miguel Nabuco (120 USD)... will assemble soon to test...he is called Mitchel in this forum.

He was the man that produced boards and layouts and eagle files to the Dx Blame Brazilian group buy...i feel gratitude to him, reason why i am showing his work.

Nabuco Eletrônica - Kits de Áudio Hi-Fi

Maybe you gonna need to remove the ending br, there you gonna find a pdf with schematic to DIY, also boards pictures and explanations.... in portuguese.

YouTube - Nabuco Pre amplifier 1

YouTube - Nabuco Pré Amplifier - Part 2A

YouTube - Nabuco Pré amplifier - Part 2B

YouTube - Nabuco Pre amplifier 3

YouTube - Nabuco Pré Amplifier 4

YouTube - Nabuco Pré Amplifier 5

YouTube - Nabuco Pré amplifier 6

regards,

Carlos
 
I am starting to assemble

Dip swithes controls the chip gain....there's an input potentiometer too and more two boards...supply and input selector using micro relays and routating panel switch.

regards,

Carlos
 

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dear sir
greetings are you using ic OPA2134 FROM BURR BROWN can studio
preamplifier from silicon chip australia be used with amplifier it is a very high
end preamplifier have finished supply pcb for your lovely amplifier has delay
dc protector short circuit protection clip led all on one pcb is it okay i have
transformer 40 0 40 ac 6 amperes
thanking you
andrew lebon
 
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