Nobsound Mini Bluetooth 5.0 Power Amplifier, Stereo Hi-Fi Digital Amp 2.0 Channel 50W×2 with AUX/USB/Bluetooth Input, Wireless Audio Receiver, PC Sound Card with Power Supply (Silver)

I wanted to use a couple of old Radio Shack Minimus 7 speakers with my Windows 10 PC, and this little amp made it possible.When you connect one of your PC's USB ports to the amp's micro-USB jack, the amp turns on (and loudly announces "PC mode!"), regardless of the on/off switch's position. I turn the switch off and volume control down to zero when making any input changes.If you need tone control/equalizer, download the well-rated and free FxSound Enhancer software for Windows. I looked up a detailed review of my speakers, and used the graphs to create an equalizer preset to compensate for their deficiencies.Unplugging the micro-USB on the amp immediately activates Bluetooth, if the on/off switch is on. The connect beeps are loud as previously noted.You can connect the PC sound output out to the AUX input in lieu of the USB connection; this also allows the on/off switch to function.Sometimes I plug an Echo Dot into AUX to play music from my server using the Dot's Plex and Emby skills (additional setup required, especially for Emby).The sound quality is quite good for all three inputs.I wouldn't have minded if the USB jack was on the back along with the speaker and power connections. But since by design, it acts as a switch when changing to Bluetooth mode, it might as well be on the front panel.This little Nobsound amp is more than I hoped for, and well worth the modest price!

The construction and finish on this tiny amp are absolutely fantastic and goes well beyond the expectations I had for the price. I am blown away by how they were able to fit so much power and functionality into such a small device. I cannot speak to the BlueTooth or AUX performance, as I am using this amplifier as an external USB soundcard to power 2x Dayton bass shakers attached to my sim racing rig. No drivers were required and it was incredibly easy to set up in SimHub with an LPF, so no need for crossovers. More than enough power for the 2 shakers at 75% gain on the device and 75% in software, so much so I am thinking about dialing it back to 60% in software. I will definitely be buying another of these amplifiers if I decide to add more shakers to the rig.

This is my second small digital amp like this little guy. it works great for me with bookshelf speakers in our home office. However, over time, as you can see in the photos, it tends to cook one or both of the speaker wires. So recommended, but keep an eye on the wiring!

Love these so much we have 3. The main negative is the Bluetooth beep (pretty loud) but otherwise I love these. One is a discrete bedroom unit driving two Audio Orb satellites and an under-bed 8” narrow sub. Another lives in the garage and drives two custom tower speakers for my wife’s gym. The latest setup lives under the deck in summer driving cheap waterproof speakers. Small and easy to transport to vacations where we always supply the music for the group.

Little giant, powers a pair of Klipsch rp-600m with ease. Sounds clear with little THD at the highest volume. I’m buying a second pair to power my external speakers.

I have a few of their products. Until now, the only thing I didn't like about them was the name. This thing has horrible bluetooth, is underpowered, cuts out, and makes an audible scene through the speakers with any adjustment. Replaced with a different product that works very well in its place.

Solid little amp. It's versatile, compact, and is great to have amongst your gear. It servs as an excellent computer speaker amplifier. I've purchased two and will probably buy a couple more. I have created a house full of wi-fi connected speakers. I've taken a large flatscreen computer screen, added speakers to it, and didn't have to buy a new tv. I've tied it into a bedroom dj rig, works great for monitors on my DDJ-1000.

This miniature powerhouse puts out a good, clean signal, powerful enough more most home situations. It has versatility. I had to return it for a different model because the instructions are inaccurate, and some of the users of this thought its operation was confusing. It's being replaced by a different amp from the same company.