Nobsound NS-01G PRO Mini Bluetooth 5.0 Amplifier 50W x 2 Review
A 50W x 2 mini amplifier on the TPA3116 chip with Bluetooth 5.0, USB and 3.5mm AUX inputs, sold in five colours with or without a power supply.

Our verdict
The NS-01G PRO is a $39.99 mini class-D amplifier that gets the essentials right: 50W x 2 from a TPA3116 chip, Bluetooth 5.0, USB and 3.5mm AUX inputs, standard banana speaker terminals and a case small enough to hide behind a monitor. It even includes its cables and comes in five colours. Just decide at checkout whether you want the power adapter bundled, and accept the lack of tone controls, subwoofer output and digital inputs.
- Best for
- Small desk or shelf systems that need a cheap, tiny amp with Bluetooth, USB and AUX inputs.
- Skip if
- You want tone controls, a subwoofer output, a headphone jack or digital optical inputs.
The Nobsound NS-01G PRO is a mini Bluetooth amplifier priced at $39.99 and aimed at home and desktop audio systems. It is a compact stereo class-D amp built around the long-running TPA3116 chip.
Its inputs cover Bluetooth 5.0, USB and 3.5mm AUX, which the listing says makes it compatible with most common audio devices: phones, tablets, computers, TVs, CD players, decoders and preamps. The Bluetooth 5.0 connection is described as faster and more stable than earlier versions, while the USB input is plug and play with no driver needed. Speaker output is through banana jacks, matched to 4-8Ω speakers, and the rated power is 50W x 2 with a claimed total of 100W, which the maker says will drive most home speakers while staying free of audible noise even at high output.
The amplifier runs on DC 9V-24V, and the power supply is listed as optional, so it is sold both on its own and as a bundle. The case is aluminium and measures just 78 x 70 x 38mm, weighing 154g, and it is available in black, silver, gold, blue or red. The package includes the amplifier, an AUX cable, a USB cable, an RCA audio cable and a manual, plus the power supply if you select the version with one. The store's own copy also mentions a 30-day return service, a 3-month replacement service, a 1-year warranty and lifetime technical support.
Douk Audio ships worldwide with free and expedited options and destination-based pricing. Orders under 2kg go by airmail (10-25 days) and anything over 2kg by DHL, UPS or FedEx (5-8 days); at 154g (or 450g with the supply) this amplifier ships by airmail. Import duties and customs charges are the customer's responsibility. All items carry a 30-day free return or full refund and a 1-year warranty, with exclusions for orders placed by mistake, man-made damage or misuse, a subjective change of mind, and anything else outside the warranty terms.
What we liked
- Three input paths: Bluetooth 5.0, USB with plug-and-play playback and 3.5mm AUX
- TPA3116 chip quoted at 50W x 2 (100W total), said to stay free of audible noise even at high output
- Very small aluminium case at 78 x 70 x 38mm and 154g
- Five colour options to match a desk or shelf
- Ships with AUX, USB and RCA cables so it is ready to connect
Worth noting
- The power supply is optional: the cheaper version arrives with no power adapter
- No tone controls, no subwoofer output and no headphone jack
- No optical or coaxial digital input for a TV or console
Questions before you buy
Does the amplifier come with a power supply?
It is sold with and without one, so check the variant you select. Both versions include the AUX, USB and RCA cables.
What speakers can it drive?
Speakers with 4-8Ω impedance, connected through banana speaker jacks. The rated power is 50W x 2 (100W total) from the TPA3116 chip.
How does the USB input work?
The listing describes it as plug and play with no driver required, so you can play music from a USB source without installing software.
What colours are available?
Black, silver, gold, blue and red.
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