More Powerful! 100 Watts Mono Amplifier
Are you working in a project in some area, commercial buildings, elevators or DIY projects that only need one speaker but with high amplification? Our Mono Amplifier can get the job done! It can output a maximum 100W in Mono channel which is perfect for such situation.

Up2stream Amp Mono
Born for Powerful Sound Lovers
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High Power Stereo System
You can combine 2 AMP Mono to form a stereo system with 200W power in total. It is also very easy to setup. Just 2 steps and you can enjoy your music with high power stereo system.
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More Extension
There are both Digital output (I2S) and Analog output (DAC) for you DIYers to be able to connect other amplifiers to extend the music power.
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Easy Switch Mode
You can easily change AMP Mono output mode from Mono to Stereo or vice versa, just see what is best fit for you.
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Whole House Party System
With a little tweak you can pair AMP Mono with a stereo amplifier to become a 2.1 channel amplifier, put multiple devices in rooms of your house and you are ready to host a enjoyable and fun house party!
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All Musics you like
Huge music resources supported like Spotify, Amazon Music(US Only), Tidal, Deezer, Qobuz, Internet Radio, iheart Radio, Napster etc. Other than online music, you also can play local music by NAS, USB storage where you have collected your favorite song for years.
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Wireless Connectivity
Streaming your audio all the way by Wifi, Bluetooth 5.0, DLNA, UPnP, Airplay, Spotify Connect.
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PC support and Tuning Tool
Supports connection to PC through micro USB to act as external DAC, also you can use our ACPWorkbench to customize the different frequency and equalizer settings for your favorite music.
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Free iOS & Android App
Our App called “4stream” that is compatible to your iOS & Android system. All the features can be simply controlled by App. And you also can receive the notification for our regular online firmware update automatically in our App.
Specification
Wireless network | IEEE802.11 b/g/n 2.4G |
Ethernet | Single 10/100M RJ45 |
Bluetooth | 5.0, SBS/AAC |
USB Host | Play USB music |
Bluetooth Distance | 10M |
Power Input | DC 12V - 24V 12V-24V 2Pin Connector |
Audio Input | Analog 3.5mm(1Vrms)/4pin connector/Micro USB |
Audio output | Analog Speaker out(PIN SPACE-5.0mm) 4Pin Connector (Stereo) 2Pin Connector (Mono) SPDIF Pin Out |
Frequency response | 20Hz to 20kHz |
Speaker Power Stereo | 2×50-W into a 4-Ω BTL Load at 21V 2×30-W into a 8-Ω BTL Load at 24V 2×15-W into a 8-Ω BTL Load at 15V |
Speaker Power Mono | 100-W into a 2-Ω BTL Load at 24V 60-W into a 4-Ω BTL Load at 21V 30-W into a 8-Ω BTL Load at 18V |
THD | 0.03%, @1kHz 50W+50W 24V-4Ω |
Speaker Impedance | 4-8ohms |
Music Format | FLAC/MP3/AAC/AAC+/ALAC/APE/WAV |
Decoding | Up to 24bit/192kHz |
Protocols | AirPlay, DLNA, UPnP, Spotify Connect, Qplay |
Dimensions | 110*80*22m |
IR Remote Controller | Optional |
Package Included

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QUESTIONS & ANSWERS
Ask a Question-
Can you stream one bluetooth or line input to multiple AMP monos simultaneously? Does it have delay?Hello
you can achieve the goal through multi room mode, you stream Bluetooth or line in to the master device, and the slave device will get the streamer from the master one, because the data transfer through wireless so the delay depends on the transfer delay -
Supply how much, V + - and watts if the device >mono amplifier< is only used as a source for the SPDIF module >SPDIF Out BoardSPDIF OUT Board don't need supply on amp mono
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I'm wondering what is the power in mono mode 26 V / 6 A in 8 ohms ???about 60 watts
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What is the difference between Up2Stream Amp Mono and Up2Stream Amp V4. Apparently there is no difference.it's same board but controller by a swtich to change mono and stereo.
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If we set up two different devices as left and right channel, how will this appear in Spotify Connect? Will it appear as a single device that I can choose? Thank youhello, you can make use of multiroom mode to achieve your idea, in this case, you only need to stream music to the master device ,so in spotify, you only need to select master device to play music
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Hello, It seems there is an IIC connector. Is it possible to drive the AMP mono board with arduino for on/off, volume, previous/next,led functions...?the i2c connecter is reserved for the display expansion board
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Hello, Is it possible to define the BT name of the board?the bt name of the board is same as your device name, you can define your device name by 4STREAM APP
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Hello, Is a APTX BT?sorry, this type of board dosen't support aptx
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Hello. How do you switch on/off the Amp mono?you can use the ir remote, and you also can use the stand by button to let it deep sleep
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Is it possible to get a chassis to put the board in?you can refer to this page https://www.arylic.com/products/up2stream-case
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How do you use two mono amplifiers in a stereo set-up? And is it real left/right stereo?You can set up two different devices as left and right channel outputs by grouping multiple rooms
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blutooth and dac chip type?both are MVbp1064
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How is volume controlled in up2stream mono amp ?Same as stereo .by IR,remote controller or app .

●It is extendable by expansion boards.
*5G WiFi compatiable means users could control our system when your smartphone connected to your router's 5G channel.
* About Spidif Pins, Up2stream Mini/Pro is default as Spdif out. Up2stream Amp/Mono is default as Spdif in. You can switch to Spdif In/Out by ACPWorkbench Tool. The 2 spdif pins are the same funtion, can't change seperately.
*Up2stream Amp SUB and S50 Pro+ Preamp is our coming up new products.
