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.

This little thing is amazing. I have four 600 W outdoor speakers,, and the sound is surprisingly, good. ,There is enough power to drive them., and I actually have to turn the volume way down so that I won’t bother my neighbors a quarter mile away. I had a few very specific questions and the customer service is top-notch. I pose a question on Amazon and they respond within one day. I had two questions, and they were equally promp and knowledgeable both times.My Home Theater system is Onkyo TX-N3030 11.2 Dolby Atmos system with 16 inch powered Velodyne sub, 48” floor standing powered Definitive sides, and B&W 602 all around. So of course we cannot compare those amps. But believe me, this little Donner is amazing for its price point Totally recommend, especially because of the top notch customer service.

Replaced a standard amp/receiver with this to run a pair of indoor and a pair of outdoor patio speakers. With my old receiver, to listen to music outside the volume was so high inside, I'd have to turn the indoor speakers completely off. Now I can adjust the volume on each pair to the right level. The remote is a little cheapy but I only use it to turn it on and off. The sound quality is fine for what we're using it for. The bluetooth works great. Using an old iPhone for music and it operates from outside on the patio with no issues. It's really a great inexpensive option for running multiple speakers at different volumes.UPDATE: So I was noticing a lot of songs didn’t sound right. Originally thought I had bad speakers or wiring. After a lot of trial and error I finally figured out if you listen to a lot of classic rock where you have guitar, etc. only playing on one channel, you have to wire a set of speakers - 1 on A-B channel and one on C-D channel to get the true stereo sound (and then set the volume for each the same). Once I did that, it sounded so much better. Downside is you’re really limited to just 2 separate volume zones and you have to adjust 2 volume levels anytime you change them. That said, it’s still a good inexpensive option for what I’m using it for. Hope this update helps someone else having the same issue I had.

The Donner MAMP5 has exceeded all of my expectations! I require my music at moderate to full volume and was blown away by the crisp, clear highs as well as room shaking lows! My Donner MAMP5 is running two Yamaha club speakers and two 10" powered subwoofers (Velodyne and Boston Accoustics).... and there is STILL room for another pair of speakers! THIS UNIT WILL RUN 4 SETS OF 8 OHM SPEAKERS... 8 TOTAL! For the price, this compact unit cannot be beat. There are many options for audio input too... Bluetooth streaming from your phone or tablet, MP3's stored on your USB thumb drive, RCA stereo CD and DVD inputs (I am using those inputs for my LCD TV and computer), and an auxiliary input. (I'm playing my Donner electronic drum set through the auxiliary input.) The controls are well laid out, self-explanatory, and easy to navigate through all of the functions. There is a main volume control as well as 4 channels (2 for the left and 2 for the right) that can easily be controlled independently, giving the user the option to fine tune levels between each set of speakers. Great for wiring music to another room if you so wish. For all of the options you get, the price is very reasonable. I am highly satisfied with this purchase! Recommended to anyone looking for a compact stereo unit with a plethora of nifty options!

TUTTO OK - ECCEZIONALE

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

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

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