Donner 4 Channel Bluetooth 5.0 Stereo Audio Power Amplifier, 440W Peak Power Home Theater Stereo Receiver with USB, SD, FM, 2 Mic in Echo, RCA, LED, Speaker Selector for Studio, Home Use - MAMP5

I connected whole house 13 wired speaker at the same time to this amplifier. 4 speakers at 2nd floor, 6 at first floor and 3 at basement. It is pretty laud as laud as disco with clear voice. At first, I doubted if it could handle it. I leave it to play at high volume more than few hours. Interesting, it did the job without loosing quality of voice or getting hot. I am a builder. I am not expert at quality of sound. But music was pretty clear to me and no distortion. I install these kind of system to present sound system in brand new houses. It works the same as branded amplifier with over $1500.

I'm writing this review because I'm still very impressed with this amp. I works really well and makes my old school speakers thump. Just what I wanted for great price thankyou

Can hook up 4 sets of speakers with separate volume controls. Runs seamlessly with CD, DVD and Bluetooth. Needed a pre-amp to play a turntable.

After about 10 days I can no longer play music using the USB or SD card readers. Worked great at first, but now it starts to play and then switches to FM. Purchased this unit mainly to be able to play off USB.Update: After being contacted by Donner a few times to try to resolve the problem, they sent me a brand new unit. Haven't hooked it up yet, but it's nice to know that there are companies that stand behind their products. Thanks Donner!!

The amp works well with a little distortion at higher volumes or higher treble settings . Did not compare well with my old Yamaha receiver but didn’t cost half as much. The Bluetooth and usb work well. Cd player was good. Great for casual listening and having the ability to stream from online services. If you are audiophile you will be disappointed. A casual listener will be satisfied

First of all, I don’t write reviews but I was so impressed with the value, quality and simplicity of this amp, here I am. I have a cottage with 7 in wall/ceiling speakers and a pair of book shelves. Four pairs of speaker connections and four independent volume controls are about as simple as it gets, no need to toggle through or turn off zones and I connected my sub woofer direct to the output jack. Easy Bluetooth connectivity and super crisp sound. It was important for me that anyone could connect their device and easily stream and control music and frankly, anyone can figure this Amp out in seconds, turn it on, connect to Bluetooth and adjust the volume of the four zones to suit. Simple base and treble dials also greatly appreciated. Simple, well designed and amazing value. Five stars.

The amplifier itself works fine, but of course it doesn't reach the mentioned 440w. The 'blue' text will continue to flash if there is no bluetooth device connected. Very annoying. Display is also only used to indicate 'blue' nothing else can be on there. Interesting is also that it has 4 volume settings for each channel which is handy, but the main volume knob is very small

A bit weird to set up but this works perfectly for our 4 zone restaurant. Loud enough and easy to use for staff. No issues.

I really wished I had read and adhered to the negative reviews. Firstly, this amp was simply being used as meditative music through ceiling speakers. The power of this unit is very misleading and cannot be what they claim however, I could certainly tolerate the lack of based on my needs.Unfortunately this has such a distortion at any volume levels, I cannot use for any purpose other than a paper weight. I have reached out to the seller via email (only option) and haven’t received a reply in almost 2 weeks. The website claims they respond in 24 hours. I had decided to purchase this based on the reviews stating the seller was very helpful after the sale. I received this over the 30 days ago and just finally ran the wires and found myself thoroughly disappointed with this purchase. I cannot consciously recommend this amplifier and suggest elsewhere.

Bueno amigos, comento que tal fue este apli.Lo monte en un bar, para música de fondo. Altavoces en 2 zonas 40w cada altavozZona 1 2 altavoces de 40w 2 víasZona 2 4 altavoces de 40w 2 víasDe los altavoces no voy hablar.El ampli cumple de sobra con la Instalación, el sonido es limpio sin sorpresas.No esperes un sonido espectacular, es simplemente un amplificador para lo que es. Si buscas, sonido Hi-FI de calidad no compres este.Lo del ventilador, ruido como he leído que dicen que hace, lo puedo ratificar.La posibilidad que da el poder controlar las zonas el volumen es perfecto para mis necesidades.Se puede mejorar el tema del ventilador si entiendes de electrónica.Precio calidad 8

My previous amplifier was a tube amp. But I burned something out (not a tube, I checked those) and I needed something that was less complicated than my old set up. My old set up was a tube amp for my front Klipches and a Class D amp for the back ones. I also have a 400 watt subwoofer.I used to feed those amps from my computer, which outputs to a discrete DAC.This is for my 10x10 home office, by the way. So I know it's overkill.So anyway - I got the MAMP5 and used 4 channels to bi-amp my front Klipches (these are the ones you can do that on). Then I just did normal 2 channel to the back. I used pre-out to go to my sub.Then I messed around with levels and stuff on the amp and on my sub.Those blue dials on the amp - don't turn them up past about 12 o'clock. Use the little black one on the bottom right to control overall level. The blue dials are just to set "ratio." And you keep them at less than 12 because you want to leave some headroom for loud things in your music.If you hear the fan - that's because you did something wrong. For example, I can make the fan come on by turning the blue knobs to almost zero, then cranking the main volume knob. Because the blue knobs are near zero, there's almost no sound coming from the amp. But it's still working hard. That's because I think the blue knobs basically just work like resisters and the black knob controls the actual amplifier. SO - put the blue knobs near 12 o'clock and the little knob at 9, or 12 if you want loud loud.I think if you turn the bass or treble up too high, that will also trigger the fans prematurely. So it you hear the fan, mess around with the volume & tone knobs.So what does it sound like? My original major in college was audio recording engineer, I used to do sound in a club, and I have done it for live bands, so I think I have decent ears.1) It's "trebly" - so turn down the treble. This could also be me going from tube to solid state. Either way, turn the treble down a little.2) bass needs to be turned up a little.3) Soundstage is good. Instruments and voices appear in 3D space about like I would expect.4) It doesn't sound grainy. That was my big worry.5) It's loud AF! If you adjust it right - you actually are getting 50 clean watts per channel. So with me biamping the fronts, I am getting 100 watts to each of those and 50 to each of the rears. These are efficient speakers and I can drive them to earsplitting level with almost no distortion.6) The remote works, but only controls volume for the bluetooth, USB and card reader and FM inputs. It won't control volume for aux or anything else that is plugged into the back with RCAs.7) When it does distort, it distorts the way that you would expect from a class-D (I don't think it's A/B for this price). So it's like clean, clean, clean, then holy moly. It's not linear.The fact they put in a loud fan and super ventilated the case tells me this is primarily intended for something like a retail store or a bar. My impression is that it won't prematurely fail. I think it's worth the money.

Gracias, el producto llegó físicamente bien y bien empacado. Regresaré a la reseña en días posteriores para compartir sobre su funcionamiento.

Depuis des mois je suis sur amazon cet amplis de puissance , en ayant le baguage d'un électricien , artiste DJJe l'ai acheté ... Quand j'ai ouvert le boite j'ai été déçu de prendre en mains un amplis de 4Kg et petit formatJ'ai câblé à la va vite mes 8 HP JBL de 120 W , ultra déçuGo to lecture de la documentation technique pour étudier mon achatAprès lecture un re câblage sera fait et des réglages flat et je découvre un amplis assez bon , après avoir fait joujou pendant 1 H pour tout régler et installer fixe , je suis hyper content de mon achatTrès bonne dynamique et attaque , très bonne sensibilité , très bon rapport signal bruit4 driver stéréo pour des combinaisons multiples , un master volumeBref un amplis de puissance top et pas cher et effectivement bien recevoir 8*50W RMS pour du 8 ohmsJe serait curieux d'étudier son schéma électronique , j'ai l'impression d'avoir un amplis de Classe A-B par hybride vu comment il fonctionneBref je vais en reprendre 1 car j'ai 4 membranes de 38 cm en 200 W en sarcophage , 2 médiums en 300W et 2 twiter de 300W a faire fonctionnerMaintenant il me manque un égaliseur 2*10 clés , un pré amplis , et 2 autres racks pour les effetscar cet amplis le mérite