Arylic-Up2Stream AMP v4 Multiroom Wireless Streaming Stereo Amplifier Board

The Up2Stream AMP v4 is a compact, high-power wireless streaming amplifier board that upgrades passive speakers and traditional audio systems into smart, multiroom solutions. Featuring Wi-Fi and Bluetooth 5.0, it supports streaming via AirPlay, Spotify Connect, DLNA, UPnP, and QPlay, with full control through the 4STREAM app for music sources, EQ, and multiroom grouping. Powered by the TPA3116D2 Class-D amplifier, it delivers 2×50W stereo or 100W mono output with high efficiency, along with 24-bit/192kHz hi-res audio decoding, built-in DSP tuning, and USB DAC functionality for PC and Mac. Designed for plug-and-play, no-solder DIY projects, the board comes with an acrylic protective case, making it ideal for smart speakers, soundbars, and custom wireless audio builds.

POWERFUL CLASS-D AMPLIFIER WITH HIGH OUTPUT: Powered by the efficient TPA3116D2 Class-D amplifier chip, the Up2Stream AMP v4 delivers strong, clean amplification with low heat and low distortion. Supports 2.0 stereo output up to 50W ×2 for left/right speakers or high-power mono output up to 100W for single-speaker or subwoofer applications, making it ideal for passive speakers, soundbars, and custom audio builds.

TRUE WIRELESS STREAMING WITH MULTIROOM AUDIO: Features built-in Wi-Fi (2.4GHz) and Bluetooth 5.0 for stable, low-latency wireless playback. Using the 4STREAM ecosystem, multiple Up2Stream devices can be grouped to play the same music in perfect sync across rooms or different audio in each room, enabling a complete whole-home wireless audio system.

HIGH-RESOLUTION & LOSSLESS AUDIO DECODING: Supports high-resolution audio decoding up to 24-bit / 192kHz, ensuring detailed, dynamic sound reproduction with minimal distortion. Compatible with popular lossless and compressed audio formats including FLAC, MP3, AAC, AAC+, ALAC, APE, and WAV, delivering true CD-quality and high-fidelity playback.

WIDE RANGE OF INPUTS & OUTPUTS FOR MAXIMUM FLEXIBILITY: Stream music through Wi-Fi, Bluetooth, Ethernet (RJ45), USB Audio (PC sound card mode), Analog Line-In (3.5mm / 4-pin), SPDIF input, NAS (DLNA), or USB pen drive. This wide connectivity allows seamless integration into existing home audio systems, DIY speaker projects, and professional installations.

EASY STEREO / MONO MODE SWITCHING: Designed with onboard jumper selection for fast configuration between stereo and mono modes. Stereo mode supports a pair of passive speakers for left/right playback, while mono mode combines channels to deliver higher output power for a single speaker, making it suitable for compact builds, mono speakers, or custom enclosures.

LED Indicators & Button Control

Power / Mode Button

• Short press: Switch input mode
• Long press: Power ON / OFF
• Double press: Re‑pair Wi‑Fi / Bluetooth
• Triple press: Factory reset

LED Status Indicators

• White: Wi‑Fi / Network mode
• Blue: Bluetooth mode
• Green: Line‑In mode
• Red: USB mode
• Yellow: PC sound card mode
• Purple: SPDIF mode