X400 V3.0

X400 V3.0 DAC+AMP Expansion Board - Front

X400 V3.0 DAC+AMP Expansion Board - Back

X400 V3.0 DAC+AMP Expansion Board

Geekworm metal case for X400 v3.0 and PI 4B

Geekworm metal case for X400 v3.0 and PI 4B

Aluminum Metal Enclosure for x400 v3.0 and PI 3B+

Aluminum Metal Enclosure for x400 v3.0 and PI 3B+

Overview

This is a redesigned X400 audio expansion board. We have adopted a lot of customer feedback on the previous version. We have made many improvements based on the previous version. I believe you will like it.

Features

• Full-HD audio – up to 24-bit/192kHz playback
• Audiophile TI Burr Brown 32-bit/384kHz DAC (TI PCM5122)
• Class leading audio; 112db SNR, and THD of 0.0019%
• Built in High quality Class-D stereo audio amplifier (TI TPA3118D2)
• Up to 2×30W Into a 8-Ω BTL Load at 24Vdc
• Capable of driving 4 Ohm speakers (also works with higher impedance speakers)
• Built in high quality audio headphone amplifier (TI TPA6133A)
• Uses the Texas Instruments ultra-low-noise voltage regulator (output noise< 10μVRMS)
• Uses the Texas Instruments high efficiency step-Down DC converter (up to 95%)
• 6V~26Vdc converted to 5.1V, 3A to power the Raspberry Pi
• Uses the genuine ALPS RK163 series potentiometer for smooth volume adjustment
• Built in high quality IR sensor (Vishay -the world's leading supplier of infrared receivers)
• Onboard RCA connectors
• Onboard 3.5mm stereo headphone jack
• Onboard speaker & power screw terminals
• Onboard 4pin PH2.0 connector allowing to connect a external lighted power switch to control power
• Onboard gold-plated high-current DC power jack (5.5x2.5mm)
• Uses the digital I2S audio signals to reduce CPU load over USB audio solutions
• Connects directly to the Raspberry Pi - No wiring required
• Powers the Raspberry Pi - no additional power supply
• Reserved Raspberry Pi GPIO pin header (2x13Pins)
• Pop-noise can be improved by enabling GPIO control
• AMP can be enabled / disabled with jumper link

WARNING:

DO NOT APPLY POWER TO YOUR RASPBERRY PI VIA THE PI's MICRO USB SOCKET.

Specification

• Power supply: 6-26Vdc，( >=3A is recommend)
• GPIO used : LRCK - IO19, BCK - IO18, DATA - IO21, IR - IO26, AMP mute - IO22
• Analog audio output level: 2V RMS
• Headphone max output power: 142mW at 16Ω
• Amplifier max output power: 2×30W at 8Ω BTL Load at 24Vdc
• Resolution/Sampling Rate: upto 24bit / 192KHz (Raspberry Pi I2S)
• PCB size 87 x 56mm

Power Supply Require

DC 6-26V，( >=3A is recommend)

Please refer to DC 19V 2A Power Supply

Packing List

• 1 x X400 V3.0 Expansion Board
• 1 x Installation screw pack

Matching Metal Case for X400 V3.0

There are two types of housings, one for X400 and PI 3B(name it X400-C3) and the other for X400 and PI 4B(name it X400-C4).

Note: Please remove the jumper cap on the PWR (on the X400 board beside the 3.5mm jack headphone), or the power switch will not work normally. Please refer to FAQ 3.

	X400-C3	X400-C4
For use with	X400 V3.0 and Raspberry Pi 3B+/3B	X400 V3.0 and Raspberry Pi 4 Model B
Features	Ultra-compact aluminum chassis All ports and slots of the case can match with Raspberry Pi and X400 perfectly Exhaust holes surface can reach perfect heat dissipation Equipped with 19mm metal latching power switch Equipped with high quality solid aluminum potentiometer Knob Raspberry Pi status LEDs still visible after installation Easy to change the Raspberry Pi OS SD card - Not need to open the case	Match with raspberry pi 4 and X400 V3.0, not support other raspberry pi board All ports and slots of the case can match with Raspberry Pi 4 and X400 well Exhaust holes surface can reach good heat dissipation Equipped with beautiful metal latching power switch to control the X400 V3.0 DAC board and raspberry pi 4 model b Equipped with a Geekworm Embedded Heatsink and cooling fan kit, provide better heat dissipation Equipped with high quality potentiometer Knob High quality metal material with surface galvanized process;
Packing List	1x X400 v3.0 enclosure 1x Metal power switch 1x Aluminum potentiometer Knob 4x Screw M2.5 *28mm 6x Screw M3 *6mm 1x 1.5mm hex kety	1 x X400-C4 enclosure 1 x potentiometer Knob 1 x Mounting screw package 4 x Rubber mats 1 x Embedded Heatsink 1 x 2506 Cooling Fan

X400-C4 Case Installation Guide:

Video: https://youtu.be/c0SqQQ_oAnE

X400-C3 Case Installation Guide:

Hardware and Software Configuration

More Hardware and Software Configuration please refer to web site

For Volumio

DAC Model： Please choose ST400 or IQAUIDO-dac

FAQ

Q1. Why my headphone left channel has no sound?

Customer Feedback: I am having a problem with the headphone left channel. The sound is out of phase; the voice of the signer is almost missing on the left channel when I am using headphones.

Answer: If you happen to meet this problem, please just contact us by email and attach order number, and we will help you send a headphone cable to solve this problem.

Q2. Can X400 v3.0 board can be used on Raspberry Pi Zero W or Raspberry Pi Zero?

Answer: Theoretically speaking it will be compatible, but not actually it is tested, so we can not confirm.

Q3. Why the power switch isn't working? The LED is always green but doesn't function. When I put the power on, the Raspberry Pi is booting regardless of whether the button is on or off.

Answer: There is a jumper cap on the PWR (on the X400 board beside the 3.5mm jack headphone), when using an external power switch to control power on/off, please remove the jumper cap. Please refer to the following picture.

Q4. Which DAC model do I set with piCoreplayer?

Plase choose the iqaudio-DAC .

Q5.Can I have my phone charging at the same time as I have it attached to the rca playing music, or will that fry the system?

Please do not use X400 or rasdpberry pi to charge your phone, it is not support to charge the phone.

Q6. Does the X400 V3.0 support to use with the X862?

Yes, it is OK but note the power supply must only connected to X400.

Q7: When I plug in headphones to the 3.5mm jack on the DAC they work fine but the speakers also stay on as well. How would I make just the headphones work when they are plugged in & the speakers would be off?

Please move the jumper cap on MUTE to AMP to solve the issue.

Add your comment

Geekworm Wiki welcomes all comments. If you do not want to be anonymous, register or log in. It is free.

Sort by date Sort by score

Enable comment auto-refresher

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #22

3 months ago

Score 0

I have an X400 with no case.Is the case still available?

Permalink | Reply

You are ignoring the author of this comment

Show comment | Manage ignore list

Lisa

3 months ago

Score 0

Sorry, the Case is no longer in production. If you can 3D print, we can provide you with the dimensions of X400-C4.

Permalink

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #21

10 months ago

Score 0

q1. The speakers has no sound? I plug my headphones to listen music, and now the speakers has no sound?

The amp Jumper is open.

Permalink | Reply

You are ignoring the author of this comment

Show comment | Manage ignore list

Walker

10 months ago

Score 0

Hello, Could you please provide us with your order number? then you can contact us via our email: support@geekworm.com

Permalink

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #20

21 months ago

Score 0

have two of these... sounded really good for my use however have problem with it on RPi4B with RPiOS Buster during shutdown it always shows: Kernel panic - not synching: attempted to kill init! exitcode=0x00000000 CPU: 0 PID:1 Comm: systemd-shutdown Tainted: G WC 5.10.103-v71+ #1529 Backtrace: . {some backtrace lines} . Exception stack(0xc190bfa8 to 0xc190bff0) bfa0: {some 8bit hex numbers} bfc0: {some 8bit hex numbers} bfe0: {some 8bit hex numbers} ---[end Kernel panic - not syncing:Attemmpted to kill init! exitcode=0x00000000 ]---

if this line in config.txt is commented out dtoverlay=gpio-poweroff, gpiopin=22, active_low there is no sound (bad), but no kernel panic (good) if not commented out, there is sound (good) but also kernel panic (bad).

this error only appears on RPi4B, but not on RPi3B/3B+

any work around this problem?

Permalink | Reply

You are ignoring the author of this comment

Show comment | Manage ignore list

Lisa

21 months ago

Score 0

Hi,Please insert the jumper cap on [Mute] , so that it will not be controlled by the system. then COMMENT OUT

Mute： Short-Speaker mute disbled

Permalink

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #19

28 months ago

Score 0

Raspi 3B+ dac X400 v 3.0: Audio Input RCA L R. What kind of headphone, how many ohm is best to buy. Thank you

Permalink | Reply

You are ignoring the author of this comment

Show comment | Manage ignore list

Lisa

28 months ago

Score 0

Hi，

Headphone max output power: 142mW at 16Ω

Permalink

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #19

28 months ago

Score 0

Q7 solution is not working RI 3B+ X400

Permalink | Reply

You are ignoring the author of this comment

Show comment | Manage ignore list

Lisa

28 months ago

Score 0

Hello，

Could you please send a test video to [support@geekworm.com];and let us known your order No. ; Thanks

Permalink

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #18

30 months ago

Score 0

Is X400-C3 model support ASUS Tinkerboard R2.0 with Android OS?

Permalink | Reply

You are ignoring the author of this comment

Show comment | Manage ignore list

Lisa

29 months ago

Score 0

Hello，

Sorry ，we are not sure if it supports ASUS Tinkerboard R2.0 ；By the way the X400-C3 metal case has been discontinued.

Permalink

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #17

45 months ago

Score 0

Do i Need to connect GPIO2 and GPIO3 too? I have some problem with my Raspberry on i2c. can i use other pins instead? thanks

Permalink | Reply

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #16

45 months ago

Score 0

Also - is there an Amazon link for a power supply that is recommended for this?

Permalink | Reply

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #16

45 months ago

Score 0

I have things all wired up, as far as I can tell, but the Pi does not seem to be getting any power? I've removed the power jumper. The light turns blue on the power button when I press it.

The power supply I am using is output 6v, 2amps. Should that work?

Permalink | Reply

You are ignoring the author of this comment

Show comment | Manage ignore list

Lisa

29 months ago

Score 0

Hi，

Power supply: 6-26Vdc，( >=3A is recommend)

Permalink

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #15

52 months ago

Score 0

There is an error on the power switch connector. Pin 3 is not a GND but

Permalink | Reply

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #15

52 months ago

Score 0

There is an error on the power switch connector. Pin 3 is not GND but the voltage of the power supply. (for example in my case I supply 12Vdc -> the pin is at 12Vdc).

That Voltage is also the one supplied on the Speaker and power terminal (it is always supplied, also when the system is off by power switch)

Permalink

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #15

52 months ago

Score 0

Important information missing as well: The power switch simply cut the power to the whole system. there is no proper shutdown of the raspberry, it is like removing the plug.

To turn off the raspberry in a clean way when pressing the button, I made a small circuitry with a relay that latches the poser supply and sends a power interrupt to the pi to turn it off when the button is pressed. The relay opens the power to the board once the rpi has shut. There are some out-of-the-box shields on internet with that purpose but I didn't check if they were compatible with the X400.

Permalink

You are ignoring the author of this comment

Show comment | Manage ignore list

Clintla

54 months ago

Score 0

So its great there is a video to put it together but why no actual instructions?

If you install the latest Raspian OS version, how do you get the unit to work?

I dont see an option in sound devices as if it has not detected the device

Permalink | Reply

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #14

54 months ago

Score 0

metal case looks like it would reduce the wifi

Permalink | Reply

You are ignoring the author of this comment

Show comment | Manage ignore list

Lisa

29 months ago

Score 0

Hi，

Yes，due to the raspberry pi USB 3.0 frequency interference, it is recommend to use 5G AP if use the case

Permalink

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #13

57 months ago

Score 0

I can not get video signal for the Official 7" Raspberry Pi Touchscreen. What am I doing wrong?

Permalink | Reply

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #12

58 months ago

Score 0

Does putting the amp in shutdown supply pre-amp output to RCA connectors?

Permalink | Reply

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #19

29 months ago

Score 0

Is RCA also in

Permalink

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #10

58 months ago

Score 0

RPi 4B with X400 V3.0 DAC. Choosing "ST400 Dac (PCM5122) - Amp in current version of Volumio (4.19.86v71+) adds the following line to /boot/config.txt:

dtoverlay=iqaudio-dacplus

but neither aplay -l or the Volumio web interface show the soundcard available.

No IQaudioIO DAC option, only: IQaudioIO DAC Plus IQaudioIO Pi-Digi+ IQaudioIO Pi-DigiAMP+

Did I just get a bad DAC+AMP?

Permalink | Reply

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #11

58 months ago

Score 0

do you have the jumper correctly set on the mute pins?

Permalink

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #9

58 months ago

Score 0

My system cuts out when I raise the volume over a certain level - it is not particularly loud.

This does not happen all of the time, just some of the time, but once it starts happening it will continue to do that. rebooting seems to work. Any idea?

Permalink | Reply

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #8

59 months ago

Score 0

Is software volume control possible?

Permalink | Reply

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #7

64 months ago

Score 0

Just assembled x400 V3 in X400 case, on RPi 3B+ (replacing X400 V2). All jumpers removed. Speakers connected via terminal block. Using MoodeAudio that was working on old setup. No sound from speakers, no sound from headphone socket. Help ! (Please)

Also, what is function of DC in and GRD on terminal block?

Permalink | Reply

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #9

58 months ago

Score 0

You need a jumper on the mute

Permalink

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #6

64 months ago

Score 0

Hello!

I tried to get an IR receiver on the board in Volumio2, but it did not work. Please specify which GPIO port receiver works on.

Permalink | Reply

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #5

65 months ago

Score 0

How can configure de IR RECEIVER?

Thanks for your support.

Permalink | Reply

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #15

52 months ago

Score 0

the IR should be accessible on GPIO26. Then you can look up on other forums on how to use the IR on a RPi, there are several tutorials.

Permalink

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #4

67 months ago

Score 0

Using PCM5122 chip, can the I2C interface be used to adjust audio volume

Permalink | Reply

You are ignoring the author of this comment

Show comment | Manage ignore list

Admin

67 months ago

Score 0

Hello,

We just consult for some help, the I2C interface can be used to adjust audio volume.

Permalink

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #3

68 months ago

Score 0

Which DAC model do I set with piCoreplayer? Thanks

Permalink | Reply

You are ignoring the author of this comment

Show comment | Manage ignore list

Admin

68 months ago

Score 0

Hello, please choose iqaudio-DAC .

Permalink

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #2

68 months ago

Score 0

Is it normal, that the volume controller doesn't take effect on the cinch connectors?

Permalink | Reply

You are ignoring the author of this comment

Show comment | Manage ignore list

Admin

68 months ago

Score 0

Hello,

Please send your order number and item link you order to support@geekworm,com . Please describe the problem details clearly it is better if any pictures can help.

Permalink

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #2

68 months ago

Score 0

Hello, it seems that the output via headphone can make some noise from other electric components in the electric circuit. But via cinch connector it is not available.

With my X400 V2.0 via headphone there are no unwanted noises.

Permalink | Reply

You are ignoring the author of this comment

Show comment | Manage ignore list

Admin

68 months ago

Score 0

Hello,

Please send your order number and item link you order to support@geekworm,com . Please describe the problem details clearly it is better if any pictures can help.

Permalink

You are ignoring the author of this comment

Show comment | Manage ignore list

Anonymous user #1

68 months ago

Score 0

hi, may I use a power supply with paramaters 70W 24V 4A?

Permalink | Reply

You are ignoring the author of this comment

Show comment | Manage ignore list

Admin

68 months ago

Score 0

Hello sir,

Yes, it is ok, the power supply requiremnet is DC 6-26V，( >=3A is recommend).

Permalink