I have not taken any pics yet so I will add them when it’s all ready, but I will say that I’m blown away with this little beast. I have been a car audio competitor for around 20 years now and have 2 world titles. I purchased the zx-100zl first to test the waters and still have it as the outside patio stereo and theater system. So I did not hesitate when my finger clicked on the order button for this 3 channel with separate sub unit with the treble, bass, sub volume, cross over control,and main volume knobs, which are very smooth and adjust flawlessly with no static or interference noises rolling out at all. The built in crossover is a little disappointing and is more like a cut frequency and wattage knob. I have hooked up a hand full of subs and pro woofers to see if box design would help or sub specs might be a factor but they all have the same sweet spot and going below that just kills the output, but the sweet spot is right at the spot that it needs to be anyway with every genre I went through, for me anyway. If possible try to get the unit as close to 24v as you can or at least 20v if you want to be able to utilize the units full potential. I am using a small digital voltage regulator or buck unit inline with the 19v laptop charger. That way I can just turn the adjustment knob up or down to go to 24v or down to 9v if I want to for some reason put some small 5w speakers on it, I won’t.. the sound clarity is flawless through the whole scale. Tweet response is on point. Mids and vocals are clear and powerful. If you keep the sub crossover above half way which seems to be around 100hz, you won’t loose any significant power. Over 100hz out of sub starts distorting the lowend vocals anyway so it works fine. I ended up putting a passive sub crossover inline out of the unit anyways just cause I already have some and it seems to really open up the wattage flow that the units crossover was smothering. At the moment I have 4 Yamaha 3 way 100w bookshelf speakers on the 2x50w full range channels and 2 6.5” subwoofers in a down fire custom built ported sub box tuned to 45hz on the 100w sub channel. I have it bluetoothed to my theater in my home office, aka work space, gaming system and second theater room. I can go from a virtual power point webinar to streaming John wick 3 on the 4K, to madden 21 on the xbox one or asphalt 9 on the gaming pc, and this little marvel is crisp, clean, clear, and will have the neighbors yelling at me with no problems. I highly recommend this bad boy even if you don’t need it. You will find a use for it. You will make use for it anyway. It’s that good.. also I would like to give 5 stars to the damgoo team for all the quick responses and customer first mentality that they seem to have perfected and have done nothing less then been amazing and don’t make you feel like just a customer but a personal friend from the first interaction. If everyone conducted business the way they do, the world would be a little nicer to itself.. sorry for the long winded review but how else could I have explained it. Awesome...

I bought this just out of curiosity. I'm a huge audio fan, and have a LOT of high-end gear. Carver, Nakamichi, Sunfire, Magnepan, Klipsch, Energy... the list is long, more than I can plug in. Obviously this can't compare with that stuff, but if you pair it with efficient speakers (I use Energy) and a good unpowered sub (also Energy) it sounds very very good. More than enough punch and volume, and it sets up and pairs easily with my iPhone. I used an old laptop power supply to drive it - more than enough for my application. Overall an excellent little amplifier, it surprised me. Drawbacks? It's hard to get it to lay flat with all the wires off the back, and hard to manipulate the knobs too. It would be better mounted to (or inside?) the speaker.

I have been looking at these inexpensive little amps for a few years and never really had a use for one, as I have a pile of older amps around the house for my systems. I have been upgrading my home office and decided it was time to bring some solid music playing into the office, as I do my best work with LOUD music ;-). had a pair of Polk bookshelf speakers that had been sitting in their original box for a few years from when I picked them up on sale from Frys. wanted a small amp to drive these off my PC, Alexa, and TV, and I liked the idea of how small this amp was and could mount it under my desk. had concerns about such a small amp pushing 8-ohm speakers as most folks were using it with 4-ohm set-ups. If I got I could return it it and did not like the sound/power, I could e you do need to do some assembly, and I recommend some felt feet if you plan to put this on a surface. Assembly was easy, and I quickly wired up the Polks. At first, they sounded like crap, but then I started to play with the tone and slowly dialed them in. The Sound got better as time went on. Like most amps/speakers, I find they need a little time to warm up, and the sound gets richer. With just the polls, I got pretty good sound and loud enough to annoy my wife. But, the amp would distort at the highest output. The Polks do not have a very low range, so the base was lacking. This is where I made a mistake when choosing this amp. It has a powered output for the sub amp, so you need a passive sub, and most home subs on the market today are powered. I did not want to spend a fortune on a sub, so I looked into making one and came up with a cost of about $50-80, depending on what drivers I chose. Then it occurred to me that a lot of the 'home media' speaker set-ups come with a passive sub, so off I went to eBay. I bought a refurbed SONY passive sub for $30 delivered on eBay. I got it and hooked it up, and immediately, the package was complete. With the sub hooked up, this amp has plenty of power to drive all 3 speakers and get very loud without any distortion. Still dialing it in some more, but it just gets better. If you want a cheap little set-up that you don't need 'high-end' sound, this is the amp for you. I think I will pick up a few more to drive my outdoor speakers this summer because I can hide the amp just about anywhere and very little heat. I did have to buy a power cord for a few bucks, but you can use an old laptop cord if you have one.

Tengo el estereo que venía con estas bocinas comprados por ahí de 2002 nuevo, después de años seguía funcionando pero a medias , los botones ya no respondían muy bien y lo peor de todo a bajo volumen había intermitencia en al audio.Con este amplificador han vuelto a la vida mis bocinas y su subwoofer, se escuchan muy bien, le adapte un cargador de laptop de 19v 5A y funciona muy bien.

Ho comprato questa scheda amplificatore Bluetooth a 2.1 canali per collegarlo in parallelo all'impianto acustico che avevo in garage, collegato ad un autoradio Apline 50W X 4... però mi serviva anche un ricevitore bluetooth per collegare il mio smatphone… il collegamento è stato fatto in parallelo con l’autoradio inserendo un commutatore per l’alimentazione come in foto, in modo da poter accendere solo l’autoradio oppure solo la scheda amplificatore Bluetooth, come alimentatore ho usato quello che avevo per l’autoradio (trasformatore stabilizzatore 13,6v 5A) il tutto funziona molto bene, l’impianto è formato da un sub woofer da 50W + un woofer da 50W + due casse a tre vie da 100W +100W, alzando il volume al 50% il suono è molto forte e con il giusto settaggio si sente moto bene, lo uso da circa due mesi e non ha dato nessun problema. Qualità/prezzo eccellente, Lo consiglio.N.B. per avere una buona resa bisogna collegarlo ad un trasformatore con una buona potenza, altrimenti quando si alza il volume non rende bene perchè ha bisogno di più potenza,

For the price of it this produces great sound quality and has lots of power

FIRST OF ALLTHANKS TO AMAZON.Actually first have to know the device system perfactly.Firstly i was using aux jack pin is missmatched to the device. Atlast i found right pin audio cable from my old stock.I have 15 yrs old 5.1 HT. Device have 3 line spkrs output i am taking 2-2 lines from each out put. Further i have 2 bookself speakers of SOUND KING (purchased from AMAZON)The BASS out put connect with Front L & R of 5.1 and front line speakers connect with this Bookself spkrs which have self bass effect.Than 2nd Right channel output of device connect with Rear L&R with two two spkrs of origin 5.1.And the Right output of device connect with WOOFER & Center speaker of 5.1.NO NEED TO PUT OUT OF 3.5mm jack pin. This device automatically play on bluetooth or aux mod connectivity.WHAT A SOUND. FEEL LIKE HEAVAN TO LISTNING MUSIC.I AM ALSO CONNECTING THIS WITH MY SMART PROJECTER (having bluetooth) and feel like THEATER in sound quality and movie too.THANKS TO " INKOCEAN" AS WELL AS " AMAZON"LOVE IT.

Utilisé avec des enceintes dans l'atelier. Fait le job. Bon rapport qualité/prix