Douk AudioNobsound Tone 100W (50Wx2) Multifunctional Bluetooth Hi-Fi Power Amp, Wireless Headphone Amplifier, Sound Level, USB, AUX, RCA, Home Stereo Speaker System (Black)

For my needs, this amp is pretty close to perfect. I am moving into a smaller area and needed a way to conserve space while keeping my turntable and speaker setup. This amp does the job fantastically and is an amazing value for the money.Pros:- Sound quality. The sound coming out of this thing is excellent, almost if not as good as my main amplifier. I had an initial issue with a background ground hum that came through on just headphones, but after many hours of use it seems that buzz has all but disappeared. There’s no whine or hiss added to whatever is played and it can get VERY loud.- Compact size. I’m not joking when I say the power supply it comes with is bigger than the amp, it comfortably fits in the palm of my hand but doesn’t feel flimsy or lightweight.- Inputs/outputs. This is the only mini amp I found like this on Amazon that has both passive speaker and a headphone output, along with a line level RCA input, Bluetooth, auxiliary, AND USB. Switching between those inputs is very fast and easy. A huge positive to me is that it turns off the Bluetooth transmitter entirely when not in BT mode, meaning you can keep your device connected to this and it won’t kill the device’s battery by always being connected, and it will automatically reconnect with your device once switched into BT. It also doesn’t let you go into the aux or USB inputs unless something is plugged in, just another nice quality of life feature.- Design. For the most part, I really like how this looks. Most wouldn’t assume such a small box with a knob and button would be an amplifier you could run a small stereo system through, and I think the mostly minimalist look is great. I do have reservations about it though, and I will go into those in the cons.Cons:- Lack of tone control. This is the biggest drawback for me personally, as my turntable setup doesn’t include a dynamic EQ of any kind before or after this, so if an album sounds thin or muddy, I can’t do anything to fix it. So far this hasn’t really been an issue, but it would be nice to have the option for at least bass and treble.- LED display. The VU meters that play on the front don’t actually mean anything, as far as I can tell. Other reviews have complained of them not being reactive enough, but I have found mine are far too sensitive and jump into the red for even quiet sounds. As well, I have tested and they don’t reflect stereo audio, playing something that has drastically different volume between left and right channels will give you the same reading on both meters.- Design drawbacks. The finish of the plastic on this isn’t the greatest, it’s rubberized but in a very chalky kind of way. As well, the mirrored front is a huge fingerprint magnet and seems like an odd choice. Lastly, it would have been nice to have the headphone port separated out a bit from the two front inputs, as it can be hard to get the headphones out if the aux port is occupied.Overall this is a fantastic little amp and definitely worth the money. Any complaints I have with it are really nitpicks, it ultimately did what I wanted and kept the sound of my main amp while being a fraction of the size.

Pros:* item was shipped in sturdy box - thick foam padding fitted to amp & power supply* choice of 4 input sources with volume knob serving as selector* solid rubber feet on bottom help keep amp in place* bluetooth range indoors with obstructions over 50 feet* power button allows standby mode without powering completely off* LED front display shows input source & visual volume level for each channel* seller actually replies to most email inquiries: nobsound@doukaudio.comCons:• volume knob requires 3 complete revolutions to get from silence to full volume• some white noise at medium volume – not as noticeable with headphones• instruction sheet includes a chart to show relationship of output power watts with various power supplies (12, 21 and 24 volt) yet power supply provided with amp is 19 volt? Nobsound customer service said any power supply from 12 to 24 volts will work, they don’t really know what output power wattage the 19 volt power supply delivers. Volume is acceptable as long as you are connected to device with amplified headphone jack: smart phone, portable CD player, etc.NOTE: the micro size connector of the USB cable provided is slightly longer than normal micro USB male plugs. Be sure to keep it because it’s the only cable that will actually work if you want to connect amp to a computer. Also it is not possible to use the USB port to connect devices other than a computer, even with the right combination of USB to RCA or 3.5 m adapters/cables. The only way to connect a USB audio source is via provided cable to USB port on a computer. My Mac recognizes the Nobsound as JiehiBR17.Hope this helps in your buying decision or using this little amp.

I was looking for a simple two channel stereo amp for my record player and came across this. I've tried other lower priced amps before with terrible results. I was so happy that everything just worked out of the box and switching to bluetooth is so simple and easy. I had a small issue with my device after a couple of months. I reached out to customer service and they solved my issue right away. Im back up and jamming out.

Sound quality is amazing. The linearity of the frequency response is excellent. Blue tooth is finicky and stopped working for a period, but now works again. The first time I bought this, it wasn’t delivered because the product was destroyed in transit. Second time I bought it, the box arrived unsealed and it was lucky it didn’t come open in transit. This is 100% sloppiness/laziness on the part of the vendor. Easily fixed by actually just caring that the product arrives to the customer in one piece.

This unit has it all. It has RCA inputs for an external source (I used my audiophile grade CD player) and USB for laptop. I also connected my high-end active subwoofer to the headphone out and it works, with ONE exception. The 1/8th plug that goes into the headphone jack MUST be a stereo plug and it MUST be pulled back out ONE notch from the amplifier for both the speakers and the subwoofer to work together. I must say that this little unit can deliver! I ran it for over one hour and the 19 volt power supply was very cool to touch. Oh, no need to get a separate subwoofer amplifier either, just use the headphone out jack! This unit made my vintage Pioneer speakers sing.