Nobsound HiFi 2.1 Channel Bluetooth 5.0 Power Amplifier Board Case

In this review the Nobsound HiFi 2.1 Channel Bluetooth 5.0 Power Amplifier Board is assessed for home audio enthusiasts who want a powerful, flexible amp to drive bookshelf speakers and a passive subwoofer. The single biggest reason to buy is its combination of dual TPA3116D2 power stages and Bluetooth 5.0, which deliver clear stereo and a dedicated subwoofer channel with enough output to fill a small to medium room without needing a large, expensive receiver.

Key Features

• Bluetoot 5.0: Provides stable, higher-speed wireless audio for easy streaming from phones and tablets with minimal dropouts.
• Dual TPA3116D2 chips: One chip amplifies left and right channels while the other drives the subwoofer, giving clean power distribution and strong bass headroom.
• Multiple audio inputs: Built-in Bluetooth plus 3.5mm AUX and 3 PIN inputs make this amp compatible with phones, computers and CD players as well as DIY source setups.
• Full tone controls: Five potentiometers allow adjustment of bass volume, bass frequency, left/right channel balance and master volume for tailored sound.
• Wide voltage range: Runs on DC 12-24V so it can be powered from a standard switching supply or a storage battery for portable or roadside use.
• Low noise circuit design: A concise PCB layout and preamplification filtering reduce audible pops and hiss even at higher output levels.

Who It's For

This amp suits hobbyists building compact desktop or bookshelf systems that need a dedicated subwoofer and simple wireless streaming. It is also a good match for people who want to DIY an enclosure or integrate the board into a custom cabinet thanks to the separate case and accessible wiring.

It is less ideal for users seeking a finished, premium enclosure out of the box or those who need advanced room correction and network features; the case ships separately and some buyers reported variable build quality, so buyers who prioritize factory-polished fit and finish may prefer a different product.

Pros & Cons

Pros

• Strong power: 50W per channel plus 100W to the sub delivers impactful sound for most home setups.
• Flexible inputs: Bluetooth plus AUX and 3 PIN connections cover a wide range of sources.
• Customizable tone: dedicated bass frequency and volume controls let listeners tune the low end.
• Portable power options: works from 12-24V so it can be used with batteries or a standard supply.

Cons

• Case assembly required and some customers note the build quality can be inconsistent, so expect light DIY work and inspection before use.

Specifications

Bluetooth version	5.0
Max output power	100W (sub) + 50W x2 (L/R)
Working voltage	DC 12-24V
Frequency response	20Hz-20KHz
Speaker impedance	4-8 ohm (L/R)
Subwoofer impedance	2-8 ohm
Audio inputs	Bluetooth / 3.5mm AUX / 3 PIN

Our Verdict

The Nobsound HiFi 2.1 amp is a practical, high-value option for DIYers and audio hobbyists who need a compact 2.1 solution with robust power and flexible inputs. It pairs strong low-end performance with convenient Bluetooth streaming, though buyers should be prepared to assemble the case and inspect build quality. For the price, it delivers clear sound and useful tone controls that make it a solid pick for bookshelf and small room systems.

Frequently Asked Questions

Does it support Bluetooth streaming from phones?
Yes, the amplifier uses Bluetooth 5.0 for stable, high-speed wireless audio from phones, tablets and similar devices.

Can it drive passive bookshelf speakers and a subwoofer?
Yes, it provides 50W per left/right channel and 100W to a passive subwoofer, and supports 4-8 ohm speakers and 2-8 ohm subs.

Is the case pre-assembled?
No, the case is packaged separately and requires assembly with included screws, shims and knobs.