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Nobsound NS-15G Mini Bluetooth 5.0 Digital Amplifier with TPA3116 Chips, 100W+100W Review

A 320g mini amplifier with dual TPA3116D2 chips rated at 100W+100W, Bluetooth 5.0 input reaching 50ft, treble and bass knobs with a tone bypass, all in a CNC-machined aluminum case.

3.63.6 out of 5 starsUpdated October 14, 2026
$49.99Price checked October 14, 2026
Check price at Douk Audio
Nobsound NS-15G Mini Bluetooth 5.0 Digital Amplifier with TPA3116 Chips, 100W+100W

Our verdict

The NS-15G is a $49.99 mini amplifier that pairs two TPA3116D2 chips with Bluetooth 5.0 for a rated 100W+100W into 4-8 ohm speakers, covering the 3-10 inch, 20-200W bracket. Tone controls with a bypass switch, an aluminum CNC case and protection circuits round out a tidy desktop package. Two caveats: the headline power figure assumes a beefy 24V/8A supply rather than the bundled 19V adapter, and you will want to choose the variant that includes power or bring your own.

Best for
Desktop and small-room listeners who want a tiny amp with Bluetooth, RCA and tone controls for bookshelf speakers.
Skip if
You need the full 100W rating from the bundled adapter, or you want headphone and optical connectivity.
Check price at Douk AudioHow we research

The Nobsound NS-15G is a mini Bluetooth digital amplifier priced at $49.99, built for desktop or small-space systems at 92 x 108 x 30mm and 320g. It accepts a Bluetooth 5.0 signal or a wired stereo RCA input and outputs to banana speaker jacks.

At the core are two TPA3116D2 chips, the workhorses of modern mini Class D amps, rated for a maximum output of 100W+100W above 24V at 8A into 4 ohm, plenty to drive the 200W (8 ohm) or 300W (4 ohm) speakers Douk Audio names, with 4-8 ohm output impedance and a match range of 3-10 inch, 20-200W speakers. Rated performance includes THD of 0.01% or less, SNR of 98dB or better, 18Hz-25kHz frequency range and 1.1V input sensitivity. The Bluetooth 5.0 input supports up to a 50ft connection range, stable and low-delay.

The front panel keeps things tactile: treble and bass knobs span plus or minus 10dB for rousing highs and deep lows, and a bypass function returns the original untouched sound. An AUX / Bluetooth switch with red and blue indicators shows the active input at a glance. The case is pure integrated aluminum with multi-process finishing and CNC precision cutting, its curved smooth edges highlighting the unibody design, finished with a metal DC outlet that avoids electric sparks when connecting power.

The NS-15G runs on DC 12V-24V, and the variant options include a 19V power supply. Worth knowing: the headline 100W+100W rating is quoted above 24V at 8A, so the included 19V adapter will not extract the full figure. Complete protection circuits guard the amp in daily use.

Douk Audio ships worldwide with free and expedited options, and the cost varies by destination country. Packages under 2kg go by airmail (10-25 days); heavier orders ship via DHL, UPS or FedEx (5-8 days). Import duties or customs charges are the buyer's responsibility. The store offers a 30-day free return or full refund and a 1-year warranty on all items, excluding orders placed by mistake, man-made damage or misuse, subjective change of mind, and anything outside the warranty terms.

What we liked

  • Two TPA3116D2 chips deliver a rated 100W+100W, enough to drive 200W (8 ohm) or 300W (4 ohm) speakers
  • Bluetooth 5.0 input with up to 50ft range is stable and low-latency, alongside a stereo RCA input
  • Treble and bass knobs with plus or minus 10dB of range, plus a bypass to hear the original sound
  • Pure integrated aluminum case with CNC precision cutting and a metal DC outlet that avoids electric sparks
  • Protection circuits and a compact 92 x 108 x 30mm footprint suit desktop and small-space systems

Worth noting

  • The full 100W+100W rating is specified above 24V at 8A into 4 ohm, while the included supply is 19V, so expect less with the bundled adapter
  • The no-power-adapter variant needs your own DC 12-24V supply
  • There is no headphone output, optical input or USB DAC stage on board

Questions before you buy

How much power does the NS-15G really deliver?

The rated maximum is 100W+100W above 24V at 8A into 4 ohm, driving 200W (8 ohm) or 300W (4 ohm) speakers. With the included 19V adapter the output will be lower than the maximum figure.

What speakers suit the NS-15G?

Douk Audio matches it with 3-10 inch, 20-200W speakers at 4-8 ohm impedance.

What does the tone bypass do?

It switches the treble and bass controls out of the circuit so you hear the amplifier's original sound without tone shaping.

What is the return and warranty policy?

Douk Audio offers a 30-day free return or full refund and a 1-year warranty. Exclusions include orders placed by mistake, man-made damage or misuse, and subjective change of mind.

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