Akita "AllInOne" Amp based on TPA325x PFFB+ and LLC PSU in one board.

[johoya]

My shipping address is different with the one in Paypal, and already sent to you on Dec. Please check again in case send to wrong address. Thanks!

 

[nerone]

Hi Vitaly, our TPA3255 Akita V.3 amplifier with Op amp 1656 is your latest project or do you have another updated project in the future?

 

[drMordor]

Hi guys! I got your addresses.
Nerone, I have 2 projects in development.
FDA based on TPA325x. Almost completed
GaN amp, used gallium nitride transistors.

 

[drMordor]

Hi Dr Mordor,
Did you ever get a chance to make any measurements? I was curious how placing the LLC SMPS right next to the amp works mainly.

I recently looked at the noise floor from my amp which has a separate but nearby PSU and it’s very clean.

The LLC noise level is very low.
I have soundcard with -120db level, not see LLC noise.

 

[mamocel]

Hi! focus on a project, but don't go into a spin!

 

[Vunce]

Why is that a spin? Seems a legitimate question to me.

 

[drMordor]

Hi! focus on a project, but don't go into a spin!

The delay is actually caused by covid.
I wanted to go on vacation in December to solder our amplifiers, but my colleagues fell ill and I worked for three. That is, out of 4 days I was at home only one day and worked on our amplifiers.

 

[mamocel]

I understand Dr mordor, these are difficult times, and you have to live with them.

 

[drMordor]

The only plus is I draw boards at work)))

 

[mamocel]

 

[nerone]

Hi guys! I got your addresses.
Nerone, I have 2 projects in development.
FDA based on TPA325x. Almost completed
GaN amp, used gallium nitride transistors.

thank you

 

[Pepe]

Hi guys! I got your addresses.
Nerone, I have 2 projects in development.
FDA based on TPA325x. Almost completed
GaN amp, used gallium nitride transistors.

Hi,
Will there be a group buy when the FDA based on TPA325x is ready?
I like your work and find it very generous of you to offer your time spent developing your amps and time putting them together for such fair price!

 

[drMordor]

Hi!
If necessary, I will

 

[Pepe]

What of it is not necessary? Hope you don’t mind the question. Do you have a more comercial plan for the FDA?

 

[drMordor]

The FDA will be a little more expensive. And orders will be small, maximum 15 per month. to be honest - I'm tired of soldering.
Upon completion of this group buy, I plan to make GaN amplifiers. But it will be very expensive.

 

[dubai2000]

Mhhh - in post 457 you claimed GaN will remain affordable...even though "affordable" is a rather flexible term....

 

[drMordor]

could not simplify pcb, at least 4 layers.
the cost of a stereo and a PSU on one board is $ 500. cheaper than any amplifier.

 

[dubai2000]

I see your point(s) - and will still be watching...so thx for the update. BTW: Do you already know when the GaN project will happen (so that I can start saving....)?

 

[xorcz]

FDA - does it mean it will have an DAC or there will be TAS32xx? Would it be possible to synchronize 3 of them to power active 3-way speakers? I was looking for it and it is not simple
https://e2e.ti.com/support/audio/f/...er-application-as-of-section-9-1-of-Datasheet

 

[drMordor]

Yo guys))))
FDA this is Full Differential Amp)))
Not Full Digital Amp)))