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Up2Stream Plate AMP 2.1 User Manual

Up2Stream Plate AMP 2.1 is a WiFi and Bluetooth 5.0 2.1 channel plate amplifier that is easy for you to build your own high-quality 

wireless streaming speakers. Up2Stream Plate AMP 2.1 is a full range Class D plate amplifier provides 50W L&R channels and 

100W subwoofer, 3.5mm Aux input, Optical input, USB input for PC connection, Volume, Tone and Bass rotary knob for sound 

adjustment. Once connected to your home network, using our 4Stream app you can play music from your mobile, NAS or from 

online streaming services like Spotify, Deezer, Tidal, Qobuz and more. With multiple devices, you can form multiroom audio system 

and play the same music to each room in sync or play different music to different rooms.

2. What’s in the Box

1. Introduction

3. Interface

Antenna x2

User Manual

Up2Stream Plate AMP 2.1 x1

Internal Speaker Cable x3

4.1 App Download 

Download the 4STREAM application from App Store for iOS based devices 

and Google Play Store for Android based devices. 

The application supports English, Spanish, French, German, Italian, 

Portuguese, Korean, Simplified Chinese, Traditional Chinese and Japanese

4.2 First Time Usage & BLE WiFi Setup

1. Power up the device.

2. Make sure your mobile has connected to your home network using 2.4G and your GPS and Bluetooth is on.

3. Open 4Stream APP and wait for device discovery. This will take couple seconds.

4. 4Stream will ask to check the indicator, there is no LED light on this device, just click on indicator is blinking. (You can connect your 

own LEDs with the LED Pins or purchase and use our expansion board: button board)

5. For Android device, the system will ask for permission to use GPS data & File storage, please click accept to continue. This GPS 

permission is setup by Google for BLE usage, once setup is finish you can go to system settings and disable it, file storage permission 

is to let 4Stream access your mp3 files store in your mobile.

6. 4Stream APP will list out all the device available for setup, choose the one you want.

7. 4Stream APP will then ask you to choose the network you want the device to connect to, choose the one you want to connect.

8. Now enter password for your network, if this is not the network you want the device to connect, you can change it to the desire one.

9. Then you can change the name of the device. You can select a preset one or enter your own.

10. After you define the name of the device, you will see it appears in the device list in 4Stream APP and now you can start streaming 

music.

4. How To Use

WiFi Antenna: 

Socket Use to connect antenna to receive WiFi signal.

BT Antenna: 

Socket Use to connect antenna to receive Bluetooth signal.

Bass: 

Knob Knob for changing Bass level.

Tone: 

Knob Knob for changing treble level.

Volume: 

Knob Knob for changing the volume level. Press to switch source input.

Ethernet Port: 

For network connection using RJ45 cable.

Mode button: 

Press once to switch source input. Quickly Press twice to reset 

WiFi/Bluetooth connection. Quickly Press three times to do factory reset. Long 

Press to turn on the device, press again to turn on.

Aux in: 

For connection of analog audio signal using a 3.5mm to 3.5mm or 3.5mm 

to RCA cable.

Opt in: 

For connection of digital audio signal using an optical/Toslink cable.

USB port: 

For connection to PC to ast as USB DAC or to use our DSP tool 

ACPWorkbench.

DC port: 

Use to connect 12V-24V power supply.

PH2.0-9P:

 WPS: Pins used for connect external mode 

button W-LED, B-LED, L-LED, U-LED: Pins used for 

connect external LED status light
KEY: Pins used for connect external button board
IR: Pins used for connect external IR receiver

SW -/+: 

Subwoofer speaker socket

L -/+: 

Left Channel speaker socket

R -/+: 

Right Channel speaker socket

*If you change to another router, or the password of the connected router has been changed, please quickly press the mode button twice in 
WiFi mode to reset the WiFi connection.

4.3 Connection via LAN 

Plug in the RJ45 cable to the ethernet port, the device auto 

connects to your home network and will show on the app in 

about 10 seconds. (Note: your mobile phone and the device 

must be in the same network.)

4.4 Bluetooth

To use Bluetooth, switch to Bluetooth via 4Stream APP or by pressing 

the Volume knob or mode button. Then find the Bluetooth device 

SoundSystem_XXXX from your phone Bluetooth setting and pair it. If 

you have changed the device name, “SoundSystem” will becomes 

the device name you changed.

100R

MODE

1K

PLAY/ PAUSE

2.2K

NEXT

3.6K

PREY

5.6K

VOL+

8.2K

VOL-

12K

MUTE

18K

NUM 1

27K

NUM 2

47K

NUM 3

100K

NUM 4

0.1uF

DGND

KEY

VDD
3V3

10K

Plate AMP 2.1

W - LED

1K

B - LED

1K

L - LED

1K

U - LED

1K

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