Tube preamplifier ton corection Dr.Bora Jagodic design

alex mm

New member
Hi all ,
My first tube preamplifier , was build few months ago and I'm very pleased how it sound .
Schematic diagram and PCB designed by Dr.Bora Jagodic .;)

Alex.
 

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alex mm

New member
during construction....

........the price it's almost 100 euro and more pictures
 

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radio

New member
IOTA-CD Tube preamplifier

Hello!:UP:
Is someone measured the preamplifier, as soy second and third harmonic?
Of them can be seen eating this Tube preamplifier has the right Tube (Valve) sound!
Thanks

P.S.
Where you can find the project Tube preamplfier: IOTA-CD of D-r Bora?:w)
 

alex mm

New member
iota-cd.gifView attachment IOTA-CD PSU.pdfHi radio ,
No I have not make any mesurements regarding preamplifier but the sound it's what i like to hear ! yes you right it's an valve sound , warm , dinamic .......
I dont know any link to IOTA -CD of Dr. BORA J. but I have something saved in my computer .
 

radio

New member
Hello Mr. Alex !
Is this you have the PCB for a complete project (IOTA-CD) !
Since I do I create this Hibrid Audio Amplifier!!
thank you
Best Regards
 

alex mm

New member
Hi TY,
Sorry for delay ....... if you need something else please ask ......;)
regards
Alex.
 

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vikramjoshi

New member
Alex,
any guidance how to get this Pre amp working,
at couple of places its written bypass what is it for and what to do with balance.

I am Readying the BOM,
there is trim pot on Psu Pcb, How much to adjust it for what current.
And specification about brand of parts to be used or I can use as per availability.
 

Tony54

New member
Mr Alex Best regardS!
One question: Do you have a PCB board this hybrid amplifier (IOTA)?
If you have to buy it in Macedonia-Skopje?
Thank you!
 

Hadighorbani

New member
Hi TY,
Sorry for delay ....... if you need something else please ask ......;)
regards
Alex.

Hi Alex
thank you for sharing this project
very nice
can you please share schematic in PDF file and good quality?
i want crate new PCB for this project and share it here
do not need wire more in new PCB
thank you
my email address is Hadi.ghr.e.61@gmail.com
you happy me if share more project by tube lamp with me
thank you so much dear and have a good time.
 

alex mm

New member
Hi all,
New year, new build ,since this nice preamplifier with tone correction it's working from 2010, I decided to rebuild in new revisited PCB . Here are the pictures
Regards,
Alex
 

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