[rockinrob86]

Hi guys!

I'm happy to introduce you my new MP312-4!
 
For a while I wanted to create a Rack version of API312 mic preamp with 4 channels.
I'm sure people will love it and will be using different Rack modules. It was my idea to create something exciting!
I hope you will love this new MP312 4 channel mic preamp since it was made based on old API 312 version preamp.
And now you can use four channels per unit! I hope it will be a good reason to select this kit.



Price: 250$ + shipping!

Will be redy for shipping from 15 of November!

More information on WWW.AVDAUDIO.COM

Hi, I would like to order one of these.  Does it include transformers?  How would you describe the difference between 1731 and 2520 opamps?

[avdo]

Hi, I would like to order one of these.  Does it include transformers?  How would you describe the difference between 1731 and 2520 opamps?

Hi rockinrob86,

The MP312-4 DIY kit contains:
Metal case (with screws kit)
Metal case for power supply
PCBs (Main PCB and PCB for power supply)
Power transformer (115V or 220V included)
Four ps of GAIN potentiometer 
Four T-Pad 600ohm attenuator
DOA PCB (4ps of 2520 or 1731)

Audio transformers are not included! To order separatly!

1731 and 2520 has small difference. 1731 has more clear sound, It is my opinion. But 2520 more deeper in the mid range.

[dasnevestheo]

Hey Andrey,
Does the 312 BOM include the components for the 4 DOA PCBs ?

Thanks

[avdo]

Hey Andrey,
Does the 312 BOM include the components for the 4 DOA PCBs ?

Thanks

dasnevestheo, hello!
312 kit has only PCB of DOA. I can add as a bonus two different DOA.
But if you need full DOA's kit, you must to order it separately!

You are welcome!

[innercityman]

Hi,

do you have a mouser cart for the 312-4 bom ? I must admit that it would be very helpful and a big time saving. Or at least, do you have an estimation of the cost for the bom components ?

Cheers

[dasnevestheo]

i've made this but not checked :  https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=2b93280899

[avdo]

Hi,

do you have a mouser cart for the 312-4 bom ? I must admit that it would be very helpful and a big time saving. Or at least, do you have an estimation of the cost for the bom components ?

Cheers

Hello!
Dont have MOUSER cart. But have BOM on the website. 
Link here http://avdaudio.com/files/boms/BOM3124.pdf

[avdo]

i've made this but not checked :  https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=2b93280899

dasnevestheo, hello!
Thanks for your job! It is c   l!
Hope we can all use this 

Near future will add assemblies manual on the website!

[duantro]

Hi Avdo, any idea when MP312 will be back in stock?

[avdo]

Hi Avdo, any idea when MP312 will be back in stock?

duantro, hello!
Some kits are in stock.
But if you need more, I hope it will be near future. Hope in the end of this month.
I'm waiting mu-cans from manufacture. Other parts are in stock!

Thanks!
 

[duantro]

Great. Thanks, I’ll be contacting you soon!
Edit: received parts, thanks!

[innercityman]

Hi,

do you plan to offer a build manual for this project ?

Cheers !

[avdo]

Hi,

do you plan to offer a build manual for this project ?

Cheers !

innercityman, hello!

Do you mean about MP312-4?
If you are talking about this, it is in the end. I hope to finished this or next week!
If you mean other project, could you tell me which?

Thanks for your interest!

[avdo]

Good news!

MP536 MIC PRE are in stock!

We done new PCB with red color.
Added PCB for T-Pad. It it more easy to build.
And same vintage sound you liked!



Visit our online store on AVDAUDIO.COM

[groselicain]

Hi there,

       When do expect 312-4 to be back in stock? Thank you!

[Anthon]

Are you form St-Petersburg, Russia? I'm going there later this summer, probably.
Could I pick up a Urei comp kit in person?

[avdo]

Hi there,

       When do expect 312-4 to be back in stock? Thank you!

groselicain, hello!
I hope will be in stock during some weeks.  This part was sold out. Have new order on manufacture.
If you need this, you could send me mail. I will inform you as be come in stock.
Or wait please some weeks.
Assembly manual is ready. And be added near future.

[avdo]

Are you form St-Petersburg, Russia? I'm going there later this summer, probably.
Could I pick up a Urei comp kit in person?

Anthon, hello!
Send me please pm. All these are real.
Just need to decide how we can do this!

[Fuzz Face]

I was going crazy trying to find out why my MP312 build is blowing caps

Come to find out the pcb has a white stripe on the anode of the electro cap footprints for some bizarre reason

For people like me who are too stupid to read the microscopic + and - on the footprint, the cap should look like its backwards

[Fuzz Face]

I’ve been playing around with my newly built MP312 pair this weekend and I’m really happy with them.

They sound and look great. Very nice work, especially with the transformers