Hi everyone
I'm Murasame Yui
My full time job is high power LEV/EV battery PCB designer
Also DIY is my hobby.
So i design a battery wireless amplifier myself.
All the circuit and mechanical and PCB are design by me.
I only build one and will never mass production.
because it's too expensive.
It's spent me over 10,000 USD and 3 month.
(sorry for typing mistake, It's 10,000 USD not 100,000)
USB to Headphone
USB=>Adum3160=>CM6631A=>74HC32=>
AK4399=>MUSES72320=>AD815=>Headphone
BT 5.0 to Headphone
CSR8675=>CS8414=>74HC32=>
AK4399=>MUSES72320=>AD815=>Headphone
Battery capacity Li-po 4000mAh 4S6P = 355Wh
Amplifier
Isolated power supply
Battery & Charger
Finish PCB Transparent view
Use TexasComponent ASM2575 resistor
Old stock military wet Tantalum capacitor
VICOR isolated DC/DC converter
Furutech RCA socket
Building 3D model
Use 3D model to calculating total weight
Use VICOR DC/DC module constant power to heat wet tantalum capacitor
Start building battery
130W High power discharge test
Battery pack building
Also modify the analog voltage meter display range from 0~20V to 12~17V
The 4S Li-po battery empty at 12V and fully charge at 16.8V
Building VICOR Isolated power supply module
Building display panel
Look the-same with 3D model
USB link success
BT5.0 link success
Building AK4399 DAC / MUSES72320 digital volume control and Amplifier board by hand soldering
Add shielding case for DAC/Digital volume/amplifier chip
Final test
Lighting in the dark
Connecting with SONY BT LP player
And this is not the end.
I'm building the Aluminum case now.
I will finish this amplifier end of August.
Hope everybody enjoy my DIY process.
Thank you for watching.
I'm Murasame Yui
My full time job is high power LEV/EV battery PCB designer
Also DIY is my hobby.
So i design a battery wireless amplifier myself.
All the circuit and mechanical and PCB are design by me.
I only build one and will never mass production.
because it's too expensive.
It's spent me over 10,000 USD and 3 month.
(sorry for typing mistake, It's 10,000 USD not 100,000)
USB to Headphone
USB=>Adum3160=>CM6631A=>74HC32=>
AK4399=>MUSES72320=>AD815=>Headphone
BT 5.0 to Headphone
CSR8675=>CS8414=>74HC32=>
AK4399=>MUSES72320=>AD815=>Headphone
Battery capacity Li-po 4000mAh 4S6P = 355Wh
Amplifier
Isolated power supply
Battery & Charger
Finish PCB Transparent view
Use TexasComponent ASM2575 resistor
Old stock military wet Tantalum capacitor
VICOR isolated DC/DC converter
Furutech RCA socket
Building 3D model
Use 3D model to calculating total weight
Use VICOR DC/DC module constant power to heat wet tantalum capacitor
Start building battery
130W High power discharge test
Battery pack building
Also modify the analog voltage meter display range from 0~20V to 12~17V
The 4S Li-po battery empty at 12V and fully charge at 16.8V
Building VICOR Isolated power supply module
Building display panel
Look the-same with 3D model
USB link success
BT5.0 link success
Building AK4399 DAC / MUSES72320 digital volume control and Amplifier board by hand soldering
Add shielding case for DAC/Digital volume/amplifier chip
Final test
Lighting in the dark
Connecting with SONY BT LP player
And this is not the end.
I'm building the Aluminum case now.
I will finish this amplifier end of August.
Hope everybody enjoy my DIY process.
Thank you for watching.
Last edited:
Oh~ Sorry
It's 10,000 USD not 100,000 USD hahaha
$850 Texascomponents ASM2575 Audio resistor 50pcs
Audio (Surface Mount)
$400 Li-Po Cell 5548135 4000mAh x 4S x 6P = 24pcs
$735 VICOR DCM3623 x4
DCM3623T75X1380T00 Vicor | Mouser 臺灣
$2000 Panasonic 100uF/16V polymer Tantalum capacitor 500pcs
$2700 Military wet Tantalum capacitor 44pcs
$100 Laser cut heatsink 2pcs
$270 SMT Nuts 132pcs
$30 Aluminum knob
$60 OLED Display 2pcs
$60 WE shielding case x12
$70 CSR8675 module
$80 AK4399 chip
$100 LTC4006 charger parts
$20 S8254 Li-cell protection
$10 Cell balance board
$40 AD815 chip
$35 CM6631A board
$1333 Main PCB manufacture
$266 Meter PCB manufacture
$1400 Aluminum case
$10,492 total now
It's 10,000 USD not 100,000 USD hahaha
$850 Texascomponents ASM2575 Audio resistor 50pcs
Audio (Surface Mount)
$400 Li-Po Cell 5548135 4000mAh x 4S x 6P = 24pcs
$735 VICOR DCM3623 x4
DCM3623T75X1380T00 Vicor | Mouser 臺灣
$2000 Panasonic 100uF/16V polymer Tantalum capacitor 500pcs
$2700 Military wet Tantalum capacitor 44pcs
$100 Laser cut heatsink 2pcs
$270 SMT Nuts 132pcs
$30 Aluminum knob
$60 OLED Display 2pcs
$60 WE shielding case x12
$70 CSR8675 module
$80 AK4399 chip
$100 LTC4006 charger parts
$20 S8254 Li-cell protection
$10 Cell balance board
$40 AD815 chip
$35 CM6631A board
$1333 Main PCB manufacture
$266 Meter PCB manufacture
$1400 Aluminum case
$10,492 total now
Inside the PCB
Love Symmetrical structure
Top Layer with silkscreen
Top layer Track
M1 Layer Track
M2 Layer Track
Bottom Layer Track
Bottom Layer With Silkscreen
Real PCB Panel (570 x 530mm)
Impedance control report
Very beautiful I2S square wave signal
All PCB layer view
De panel
3D Assembly Exploded view
Love Symmetrical structure
Top Layer with silkscreen
Top layer Track
M1 Layer Track
M2 Layer Track
Bottom Layer Track
Bottom Layer With Silkscreen
Real PCB Panel (570 x 530mm)
Impedance control report
Very beautiful I2S square wave signal
All PCB layer view
De panel
3D Assembly Exploded view
Last edited:
By use military wet Tantalum capacitor as AD815 OP bypass capacitor
and Texascomponnets ASM2575 resistor as signal path
With the AD815 high output current and ultra fast Differential Slew Rate 900V/s
and width 120 MHz Bandwidth (–3 dB)
You can get Strong and low but comfortable and flexible low frequency response
And precise and clear but no sense of oppression high frequency response
Feels as smooth silk with luster.
And also flat and natural mid-frequency response
And use VICOR 80W dc/dc module and ultra low internal resistance HighPower Li-Po Battery and Polymer Tantalum capacitor array
You can get Ultra-fast response ,sufficient current and stable power supply
Combining the above elements
You can get very natural and Comfortable with precise positioning sound field no matter music style
About analyser measurements
Because this amplifier very heavy and all USB/Power connector/Battery and Konb need avoid collision
I will do that after aluminum case ready.
and Texascomponnets ASM2575 resistor as signal path
With the AD815 high output current and ultra fast Differential Slew Rate 900V/s
and width 120 MHz Bandwidth (–3 dB)
You can get Strong and low but comfortable and flexible low frequency response
And precise and clear but no sense of oppression high frequency response
Feels as smooth silk with luster.
And also flat and natural mid-frequency response
And use VICOR 80W dc/dc module and ultra low internal resistance HighPower Li-Po Battery and Polymer Tantalum capacitor array
You can get Ultra-fast response ,sufficient current and stable power supply
Combining the above elements
You can get very natural and Comfortable with precise positioning sound field no matter music style
About analyser measurements
Because this amplifier very heavy and all USB/Power connector/Battery and Konb need avoid collision
I will do that after aluminum case ready.
Because I have over 100 pcs AK4399 chip in stock.
Also I have build over 45 headphone amplifier are used AK4399
AK4399 just like my old friend and I love the sound.
Also I have build over 45 headphone amplifier are used AK4399
AK4399 just like my old friend and I love the sound.
S1 37.9 degree / S2 36.7 degree / Manual point 36.2 degree
S3 Power supply capacitor array 49.2 degree
Max point /Power supply heatsink 63.8degree
The amplifier circuit zone will stay at 50~58 degree
It's make wet Tantalum capacitor sound more smooth and warm
S3 Power supply capacitor array 49.2 degree
Max point /Power supply heatsink 63.8degree
The amplifier circuit zone will stay at 50~58 degree
It's make wet Tantalum capacitor sound more smooth and warm
Ahh fair enough. Would be interesting to see how it measures. Although it’s unlikely anyone can hear the differences between those chips if implemented well (which looks like it has been!)
I'm interesting how it measures too.🙂
So I need to finish the glass panel and aluminum case asap
So I need to finish the glass panel and aluminum case asap
Very impressive project!
I can see the costs perhaps are due to the large quantities of components.
It looks like you have enough parts for 10, not a single project.