Bluetooth 5.0 Stereo Amplifier 2.1 Channel Audio Class D Integrated Amp & U-Disk Player, with Sub Control for Home Audio System & Subwoofer 50W x2 + 100W, Include Remote Control - Fosi Audio BT30E
The Bluetooth Stereo Amplifier adopt performance TPA3116A2 amp chip, dual channel max output power 50W [email protected] +100W to get clear audio sound, no pop, no audible noise, dead silent when nothing is playing through it.
Speakers full frequency output, By using custom treble bass knob and adjustable 40-300Hz cutoff frequency for subwoofer, you'll be able to get the best sound!
Supports wireless playback from Bluetooth devices, Bluetooth 5.0 wireless music streaming technology with external antenna make a transmission distance of more than 15m/49ft; Remote control switches songs and adjusts volume within 16ft (5meters).
Full metallic shell to ensure high quality and durable, advanced circuitry design, built-in speakers protection circuit to ensure Hi-Fi clear and clean sound; With unrivaled sound for the customers who pursue HiFi sound!
Upgraded DC power outlet for safe use without sparks, included high quality 24V/4.5A power supply enough to drive most passive speakers and powered/passive subwoofer.
I’ll begin by saying I have and like to play with audio gear. Not sure i’m a full blown audiofile, but it’s a hobby of mine for sure.
Unit’s pros are it looks cool, very easy to use, and is small form factor. This makes it ideal for mounting behind a flat screen and driving a 2.1 setup, or for driving some passive speakers at your computer (or outside somewhere). Buttons feel cool and give you the easy control we all want....
...but, the unit is flawed. Makes very audible clicking or popping sounds whenever there is no sound, but unit is on. I believe this is a problem with the circuitry design; unit probably unloads some power here and there and the noise gets picked up. I’ve had lots of success with these small form amps, but after two of these units and the exact same result leads to believe that it’s just no good.
I kept the second one and have it in a basement arcade game thing/ stereo for my workshop. typically there is constant sound so i could live with the flaw.. not ideal but tolerable for that application.
My unit came with an audible click/popping sound when connected via Aux. Nothing I did could get it to go away. Worse, I found another brand that's the exact same amp as this, but $13 cheaper on Amazon.
Pros: Small size, build quality of the body is great, many controls from Bass/Treble, Sub vol and crossover, Aux and Bluetooth connectivity, and it's inexpensive.
Cons: The rated 100W for the sub channel with the included power supply is not realistic. I have it connected to a 6.5" (60W rms, 80W max) powered sub (the Power supply on that went out) and this amp doesn't have enough umph to power that. It barely gets to half the volume of the stock sub.
Sound quality is average, you really need to turn the Treble up all the way to get any clarity. There is an audible and annoying clicking/popping sound at all times but most noticeable when music is silent, a downfall of it being so small is that the knobs can be difficult to manipulate as they're so close together.
Edit: The listed power ratings of 2X 50W & 100W for the sub are at 4ohms. Most home speakers are 8ohms which means this amp will only provide half that listed power to your speakers. 4ohm speakers are normally found only in car audio.
Overall, It's really up to you what you find important. Do you want something to drive some small satellites with a low volume sub, do you want a very small footprint, do you want to spend as little as humanly possible, then this is for you. But if you have the cash to go for more power, cleaner sound at the highs and lows, go elsewhere. Heck! You can find a Klipsch 2.1 Promedia satellite/sub setup for $114 that will give you more power (300W) and even includes the speakers.
Received this amp on Dec 8, 2020 and have 2 passive bookshelf speakers and an active subwoofer attached to my computer sound card with a AmazonBasics 3.5mm to 2-Male RCA Adapter Audio Stereo Cable to the AUX port on the amp. Initial impression was it sounded very good. Device is small, slim, didn't get hot, bluetooth worked great and didn't cut out at 20ft through the wall. When connected to the AUX port to my PC and when you are not playing any video or music, there is a consistent little clicking / popping sound through the speakers which either isn't noticeable when playing music or is to quiet to hear. This issue has been listed by a few other reviewers on this amp as well as the Douk Audio M3. There is no clicking or popping sounds when using Bluetooth. I connected the 3.5mm jack to an old mp3 player I had laying around and the clicking sounds are not heard with this device. If I connect my old logitec 2.1 speakers to my PC soundcard, there is also no clicking / popping sounds. I then purchased a new set of Sony SSCS5 bookshelf speakers and still hear the clicking / popping sound. I then tried a 3.5mm Smof Ground Loop Noise Isolator on the AUX connection to my PC but clicking sound continues. This amp does everything I wanted it to do. It controls the volume of the sub, it has both passive and active subwoofer connections, bluetooth works great and doesn't get hot. Since I work from home and constantly using it for my PC, I don't want to listen to this constant clicking popping sound 8 hours a day so it may get returned.
Excellent sound (paired with Design Acoustics Speaker and 14AWG speaker wire). Delivers big, rich sound with both a very basic CD/DVD player and via Bluetooth using a MacBook. Bluetooth streaming is reliable so far (tested at about 30 feet). Compared to other models, it is a great advantage to be able to easily toggle input modes from the front of the device. Unlike other models, this also has a small remote control, which can be used to conveniently change modes, adjust volume, or toggle power on and off. If wiring without banana connectors, as I did, I recommend screwing off the heads of the speaker-wire receptors, hooking your wire on, and then screwing them back on; close placement makes it difficult to maneuver without doing so, but wiring was fast and easy doing it this way. It's a no frills device, but reliable performance from such a small footprint makes this an attractive proposition for anyone trying to save space.
I love the Fosi gear. Great price/performance in general. This unit has two somewhat annoying features, both related to audio "POP". The first problem is: Whenever you use the remote to mute/unmute there is a distinct low frequency pop. Also, when listening on bluetooth, if the album goes to silent, you hear that same "pop" between songs. I verified this happens from multiple bluetooth sources. I reached out to support and they asked for a video, which I provided, but then I heard nothing. Not a big enough problem to return it but definitely needs improvement. If you would be bothered by this low frequency popping when muting/un-muting please look elsewhere.
El sonido fue regular, a parte que la pila del control estaba descargada.