Nice, which power supply is that?
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3e audio TPA3255 260-2-29A Amplifier Review
- Thread starter amirm
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Search Preamp DIY kit on amazon - many tube and solid state options (NE5532 for instance, a very old but standard high end op amp that is a bit hard sounding compared to the latest from burr brown). I'm not a fan and prefer a separate preamp. But - try the potentiometer first! That's your cheapest option. One side of the pot to + in, the other side of the pot to - in, and the wiper goes to +in on the board and the - in goes to the - in on the board. I'd start with between a 20K and 50K pot and see how that sounds. (Audio taper).
daniboun
Major Contributor
400W with active PFC.
I am using the same one here
"ASH-400 Project" Sylph Audio FB-100 Stereo Module with advanced PFFB
Hi amigos, I'm coming back to the forefront with a new project. This time I focused on the Sylph Audio FB100 module, based on a TPA3251 and an advanced implementation of the PFFB. Voltage Gain is factory set @ 14dB (5V/V) on this module. So I intended to couple it to my DAC SMSL D6s which has...
audiosciencereview.com
DSJR
Major Contributor
My preamp has NE5532's and what comes out subjectively is exactly the same as what goes in (been properly checked as best as I can do). Any proper evidence to show the Burr Browns 'sound' different assuming both have been properly implemented?
Thanks, did you order it from Ali? I am a little scared of buying power supplies direct from China. They don't have any EU or American certification I guess?400W with active PFC.
I am using the same one here
"ASH-400 Project" Sylph Audio FB-100 Stereo Module with advanced PFFB
Hi amigos, I'm coming back to the forefront with a new project. This time I focused on the Sylph Audio FB100 module, based on a TPA3251 and an advanced implementation of the PFFB. Voltage Gain is factory set @ 14dB (5V/V) on this module. So I intended to couple it to my DAC SMSL D6s which has...
Would it be possible to have an external like this?
FOSI AUDIO AC/DC Switching Power Adapter 100-240VAC to 48V DC 5A - Audiophonics
This power adapter takes in input a voltage of 100-240VAC and allows to have in output a voltage of 48V DC for a maximum current of 5A. Its output connector is a DC 5.5/2.5mm jack.
daniboun
Major Contributor
Sure here goes
Tell me more about your project ?
Or
Again thank you for the reply. I am only asking questions because I'd Like to put this 3255 board in the same type custom case I put the Aiyima A07 (has large integrated dial. Everything must fit in a 6.50" diameter cylinder that is 6.00" tall internally. I recently added LM4562's and am extremely happy with the quality of sound. If this can be accomplished, I'm on board with this board, no pun intended.
Thank you !
How about using an external?
I am in the planning stage right now. I will get back later when I got all information.
daniboun
Major Contributor
The right question is > what is your budget ?Thank you !
How about using an external?
I am in the planning stage right now. I will get back later when I got all information.
Well as I wrote before. I have sold some expensive equipment so the budget for this project isn't a problem. The reason I ask about external power supply is because I have an extra 48V Fosi PSU and I have a small case that only fit the amp board.
If I go with internal is there any difference in sound quality between the ones you suggest and the one used in Amir test?
daniboun
Major Contributor
Before you launch headlong into it. I shared different projects based on 3E Audio and Sylph Audio modules. I invite you to read them, I used different PSUs each timeThank you !
How about using an external?
I am in the planning stage right now. I will get back later when I got all information.
The projects are quite detailed with prices, links to elements etc etc
"Bamboo Project" : Dual Mono 3E Audio 480-1-29A Amplifier
Hi amigos, Following the ASR review of the 3E Audio 480-1-29A Module, I decided to roll up my sleeves and show you that with a little elbow grease, you can create a very beautiful amplifier based on these nice 3E Audio modules. I called this project, "Bamboo"> the pictures will speak for...
www.audiosciencereview.com
"Micro Bamboo Project" : 3E Audio 260-2-29A Stereo amplifier + Micro-Audio PSU
Hi Amigos ) As promised, I remain faithful to my Diyer position ) After my dual Mono project "Bamboo" I return to the scene with a new project "Micro Bamboo" to pay tribute to Micro Audio and its audiophile grade SMPS630-SO PSU. (46V/13A or 51V/11,5A) Now that we know the measurements of the 3E...
www.audiosciencereview.com
"ASH-400 Project" Sylph Audio FB-100 Stereo Module with advanced PFFB
Hi amigos, I'm coming back to the forefront with a new project. This time I focused on the Sylph Audio FB100 module, based on a TPA3251 and an advanced implementation of the PFFB. Voltage Gain is factory set @ 14dB (5V/V) on this module. So I intended to couple it to my DAC SMSL D6s which has...
www.audiosciencereview.com
Yes, I know i have read about all of them and following them closely. That´s why I´m still int the planning stadiumBefore you launch headlong into it. I shared different projects based on 3E Audio and Sylph Audio modules. I invite you to read them, I used different PSUs each time
The projects are quite detailed with prices, links to elements etc etc
"Bamboo Project" : Dual Mono 3E Audio 480-1-29A Amplifier
Hi amigos, Following the ASR review of the 3E Audio 480-1-29A Module, I decided to roll up my sleeves and show you that with a little elbow grease, you can create a very beautiful amplifier based on these nice 3E Audio modules. I called this project, "Bamboo"> the pictures will speak for..."Micro Bamboo Project" : 3E Audio 260-2-29A Stereo amplifier + Micro-Audio PSU
Hi Amigos ) As promised, I remain faithful to my Diyer position ) After my dual Mono project "Bamboo" I return to the scene with a new project "Micro Bamboo" to pay tribute to Micro Audio and its audiophile grade SMPS630-SO PSU. (46V/13A or 51V/11,5A) Now that we know the measurements of the 3E..."ASH-400 Project" Sylph Audio FB-100 Stereo Module with advanced PFFB
Hi amigos, I'm coming back to the forefront with a new project. This time I focused on the Sylph Audio FB100 module, based on a TPA3251 and an advanced implementation of the PFFB. Voltage Gain is factory set @ 14dB (5V/V) on this module. So I intended to couple it to my DAC SMSL D6s which has...
And as I wrote:
" Well as I wrote before. I have sold some expensive equipment so the budget for this project isn't a problem. The reason I ask about external power supply is because I have an extra 48V Fosi PSU and I have a small case that only fit the amp board."
If I go with internal or external is there any major difference in sound quality/ Sinad between the ones you suggest and the one used in Amir test (Morsun)?
I also saw in the Sylph thread that Sylph suggested you to compare with the stock PA5 supply.
How much power does your TPA3255 amplifier produce with this power supply? (MP-H250S48)
daniboun
Major Contributor
All those high end TPA325X boards have an excellent PSRR. Any good PSU should be fine.Yes, I know i have read about all of them and following them closely. That´s why I´m still int the planning stadium
And as I wrote:
" Well as I wrote before. I have sold some expensive equipment so the budget for this project isn't a problem. The reason I ask about external power supply is because I have an extra 48V Fosi PSU and I have a small case that only fit the amp board."
If I go with internal or external is there any major difference in sound quality/ Sinad between the ones you suggest and the one used in Amir test (Morsun)?
I also saw in the Sylph thread that Sylph suggested you to compare with the stock PA5 supply.
I still have a preference for the Micro Audio which is not regulated but which therefore seems to bring more dynamism at the bottom of the spectrum.
Thank you for all the help!
daniboun
Major Contributor
Depends on your speakers impdedance....
We are limited by current in 8R loads...
https://audiosciencereview.com/foru...ft-pffb-fully-differential.47660/post-1807692
"Bamboo Project" : Dual Mono 3E Audio 480-1-29A Amplifier
Nice work as always my friend.
audiosciencereview.com
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4Ohm or 8Ohm. PSU only 250Watt
daniboun
Major Contributor
Check tables I shared )
So you can understand current / voltage limitation about TPA325X :
SylphAudio's High-Performance Amplifier Modules (2024 and Beyond)
any news regarding the ASR review ? Just small stumbling blocks on the chassis build, so it will get delayed, will update you once it's ready to be shipped. Small batch will be available soon. Can only produce small quantities for now.
audiosciencereview.com
Here the graphs. from Texas Instrument for TPA3255 & TPA3251 chips
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Have you measured it or is it only your "opinion"? As you said......we are here on ASR for measured datas.
Have you got an accusticaly optimised room and DSP for linearising frequency response? Otherwise it is a bit "into the blue".
daniboun
Major Contributor
Have you measured it or is it only your "opinion"? As you said......we are here on ASR for measured datas.
Have you got an accusticaly optimised room and DSP for linearising frequency response? Otherwise it is a bit "into the blue".
As I said in my previous thread, I have not had the opportunity to measure this point but on the other hand, the reputation of Micro-Audio PSUs is known here. Here is the only FFT we have.
As it is an unregulated power supply, the only possible comparison = VS an unregulated Hypex PSU which is renowned for its performance. The Hypex PSU has a Ripple of around 85mv
In the audible band, the Micro-Audio performs better.
From 120 Hz to 2 kHz, spurious tones are less significant on the Micro-Audio PSU as well
You can also check a short measurements here (Micro-Audio + TPA3255 board)
SylphAudio's High-Performance Amplifier Modules (2024 and Beyond)
This will be our ASR thread for SylphAudio updates, where you can stay informed about the latest developments and engage in open discussions about SylphAudio modules. Feel free to ask questions, share your thoughts, and provide feedback to help us continuously improve our products! Our Product...
audiosciencereview.com
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