Nobsound Mini Bluetooth 5.0 HiFi Digital Stereo Amplifier – 40W TPA3116

Experience big, room-filling sound from an incredibly compact powerhouse. The Nobsound Mini Bluetooth 5.0 Digital Amplifier packs a punchy 40W (20W × 2) stereo output into a palm-sized chassis powered by the upgraded TPA3116 chip. Whether you're setting up a desktop hi-fi system, a bookshelf speaker pair, or a whole-room audio upgrade, this amp delivers clean, dynamic HiFi sound that will surprise you from the first note.

Why You'll Love It

Powerful TPA3116 Chip: Upgraded Class-D amplifier chip delivers 20W + 20W stereo power with low distortion and high efficiency.
Bluetooth 5.0: Enjoy fast, stable wireless streaming from your phone, tablet, or computer up to 15 metres (unobstructed).
3 Versatile Inputs: Connect via Bluetooth, AUX (3.5mm), USB flash drive, or USB sound card — play music your way, every time.
Lossless USB Playback: Plug in a USB drive or use it as a USB sound card with your PC — no drivers required, audiophile-grade lossless audio out of the box.
Sinilink App Control: Adjust volume and settings wirelessly through the Sinilink smartphone app for added convenience.
Encoder Volume Control: Smooth-feel rotary encoder for precise volume adjustment with one-key input switching.
Wide Speaker Compatibility: Works with speakers rated 10W–200W at 4Ω, 8Ω, or 16Ω — versatile enough for most home speaker setups.
Built-In Safety Protections: Power reverse-connection protection, short-circuit protection, and self-recovery overheating protection keep your amp and speakers safe.
Compact & Elegant Design: Small enough to fit in one hand, sleek enough to sit proudly on any desktop or shelf.

Full Specifications

Output Power	40W total (20W + 20W stereo)
Amplifier Chip	TPA3116 (Class-D)
Bluetooth Version	5.0
Wireless Range	Up to 15 m (unobstructed)
Input Methods	Bluetooth / AUX / USB Flash Drive / USB Sound Card
Supply Voltage	8 V – 24 V DC (higher voltage = greater output power)
Channels	2.0 Stereo (Left + Right)
Speaker Impedance	4Ω / 8Ω / 16Ω
Compatible Speaker Power	10 W – 200 W
Volume Control	Rotary encoder with one-key input switch
App Control	Sinilink App (iOS & Android)
Protections	Reverse polarity, short circuit, over-temperature (self-recovery)
Country of Origin	Made in Mainland China

What's in the Box

1 × Nobsound 20W+20W Stereo Bluetooth Digital Power Amplifier

Note: Ensure your power supply output exceeds the amplifier's output power for optimal audio performance. If running above 20W+20W continuously, we recommend adding a heat sink for thermal management.

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For more information on safe use of consumer electronics and audio equipment, visit the U.S. Consumer Product Safety Commission (CPSC).

Frequently Asked Questions

Q: Does the Nobsound TPA3116 amplifier require a driver to use as a USB sound card?

A: No! When connected via USB to a computer or laptop, the Nobsound Mini Bluetooth Amplifier is plug-and-play — no driver installation is needed. Your device will recognize it instantly, allowing lossless audio playback right away.

Q: What power supply do I need for the Nobsound 40W Bluetooth amplifier?

A: The amplifier accepts a DC input of 8V–24V. For best performance at full 40W (20W+20W) stereo output, use a quality power supply rated above 40W total. The higher the supply voltage (up to 24V), the greater the potential output power. A heat sink is recommended if you plan to run it at higher power levels continuously.

Q: Which speakers are compatible with this mini stereo amplifier?

A: The Nobsound TPA3116 amplifier supports passive speakers rated between 10W and 200W with impedances of 4Ω, 8Ω, or 16Ω — making it compatible with a wide range of bookshelf, desktop, and home audio speakers.

Q: Can I control the Nobsound amplifier with my smartphone?

A: Yes! In addition to the physical rotary encoder on the unit, you can use the free Sinilink App (available for both iOS and Android) to adjust volume and manage settings wirelessly from your phone.