Review on 🔊 Nobsound NS-20G 200W Mini Bluetooth 5.0 Power Amplifier: Wireless Stereo Headphone Audio Amp with LED Display (Gold) by Amy Howard

I really liked the sound this unit produced. I returned it. In the end I wasn't sure how to rate this device and will simply leave this information for your consideration. I bought this unit as a replacement and alternative to an old school RIP receiver that did double duty for music and home. Theatre. I had my eye on A/V receivers, but for a number of reasons I finally decided to separate the functions between a TV soundbar and music amplifier. The previous device's nearly 20-year lifespan left me unfamiliar with current offerings, but I envisioned and expected something compact and powerful with Bluetooth and connectivity for a wired device like my iPod. My search led me to this NS-20G unit and when I hooked up this amp I was blown away. The sound was exceptional, particularly impressive for those only experienced with much larger devices. There are debates about the merits of different classes of amplifiers and the quality of digital music; All I can say is that the music coming off my phone and going through this amp via Bluetooth was excellent with a quality speaker set. Same for iPod over 3.5 Aux. Without an active sound source, no sound comes out of the speakers at all. When I turned the volume up louder than I'll ever hear (12 x 20 room) there was no distortion or interruption. I listened to different genres of music as well as spoken word podcasts. I loved this amp and couldn't believe that such a tiny device could bring so much joy at such a low price. Then I touched him. Curse ! This thing was missing from RED HOT after about an hour of play. I turned it off, let it cool down and listened to it at a more comfortable lower volume, and after 15 minutes it was too hot to touch again. I saw a few reviews mentioning excessive heat but these were in the minority and one reviewer stated that she had 2 of them and only the second got hot enough to bother her. Does the different experience with the two devices reflect a quality control issue? Accident? I also saw a raving video review that didn't mention heat. I decided to ask the manufacturer about this (exchange inserted below) and the quick and polite reply was (a) unsurprised and (b) explaining that this is what you would expect from a design so small and so powerful. I then found a video review where the guy disassembled the device. The microcircuit that performed the function of the main amplifier was located under a very small radiator. basically the size of the chip. and the only cooling device. I found a video of a slightly larger alternative brand amp that claims the same watts as this ns-20, where the reviewer opened the case and the chip was under a heatsink that was much larger than the chip itself. In this video was the reviewer concerned about the heat of such a small and powerful device and measured the temperature (inside and outside / before work and after an hour) with a very small rise and within the chip's published specifications. I am by no means an expert but my understanding and experience is that all devices generate heat but that heat has never been friend of electronics or computers and excessive heat must be mitigated to ensure smooth operation and long life. While not an immediate "danger," I don't see how such intense heat can bode well for the chip or other components of this device. I was happy about the response from support, but sent the device back. Despite the specified heat expectation, such a large amount of heat must be a deficiency. I bought an "alternative brand". Here, too, I am completely satisfied with the sound and can only say that the second one is not that loud at maximum volume (but loud enough). Most importantly, after 2 hours of gaming at a higher volume than I needed, the case felt just a tad warmer than when I first turned it on. This is an exchange between me and the support team: Cheers to the DukeAudio team. I recently bought a Nobsound NS-20G amplifier. I'm very happy with the performance of this device, but I'm concerned about how hot it gets. After 15 minutes of playback at medium volume, the device heats up so much that I can hardly touch it. I read several reviews that mentioned this issue, but based on the overall positive feedback I bought the device. At this point, I'm concerned that this excessive heat could indicate a fire hazard, or if it's not that serious, the issue could appear negative in terms of device longevity. Before I take the step of returning the device or leaving a negative review, I would like to know what DoukAudio thinks about this device getting so hot. Thanks in advance Brian Dear Brian, Sorry for the inconvenience. This device is very compact with such a high performance. It's normal for the heat. You don't have to worry as we tested it to make sure it's safe. Please use the supplied power adapter. If you don't need that much power and heat, use a 12V power supply. We're sorry we can't fix this issue as it's designed to be. Hope you understand. Best regards Duk Audio