Amp HAT Audio Amplifier Add-on Board for Raspberry Pi (2 x 55W, Class-D, 192KHz/32bit)

Ottimo prodotto per il prezzo. Acquistato con Raspberry pi 3+ per impianto secondario con un paio di casse da scaffale e controllabile totalmente da cellulare tramite Volumio. Possibilità spostando un jumper di farlo andare in modalità soft mute allo spegnimento della musica da Volumio direttamente dall'app o controllando il pin 22 della gpio del raspberry. Nella modalità soft mute il consumo elettrico è molto basso.La scheda alimenta direttamente il raspberry tramite gpio.Audio pulito e definito, pilota senza problemi le casse acquistate, ovviamente non è un amplificatore classico e non ha le prestazioni di Denon,Onkio ecc.. ma ha dimensioni piccolissime e un costo molto basso. Facile da montare. Ideale se si ha in programma di fare audio multiroom visto le dimensioni.Unica pecca ma superabile i morsetti dove si infilano i fili, avrei preferito fossero più stabili e avessero la possibiltà di ospitare anche cavi più grossi(anche se non necessari per la potenza dell'amplificatore)nel complesso ottimo prodotto,consigliato

Bought to pair with a RPi 3. Assembly and fitting into a Justboom case was straightforward. I already had a 19 volt 4 amp laptop power supply lying about so used this. Music files are stored, mostly as .flac files but some as Mp3, on a WD MyCloud NAS drive on my home network and the PI/Amp combination is linked to this by ethernet cable and TP Link Homeplug. I decided to use Runeaudio as the OS but may well change to the Justboom version of Volumio as volume control in Runeaudio can only be enabled in software whereas the justboom enables hardware enabling with no effect on the sound output. Only trying it out will tell if it makes any difference into the modest Mordaunt Short M10 speakers which I am Using.I am using this combination to supply music to a relatively small room, approx 15 x 8 ft. Speakers are positioned on the long wall only 5 ft apart and i sit on a sofa in front of them about 6 ft away, so not ideal listening conditions. The volume is more than adequate to fill the room but does occasionally seem to be trying too hard and will probably benefit from the additional output to be had by moving to the recommended 24 volt 3.5 amp power supply. Both the amp and speakers are still bedding in with noticeable improvement even over the first day of use. So far, stereo imaging is strong and well focussed, sound is lacking in very deep base, as could be expected from such small bookshelf speakers, but is still reasonably strong rounded and musical. Treble is well controlled giving good definition to high notes and strings without being glassy or overly bright. Midrange is nicely detailed and slightly forward. Overall a musically pleasing well rounded perfomance which belies the price and size of the individual components. More than anything however, I am pleased with the ease of access to my music collection and internet radio which this setup brings

Carte qui fonctionne bien et testé sur des enceinte de 2x30W avec alim de 90 WEn utilisant shairport, une bonne qualité de son d'après "mon oreille" (après je ne suis pas expert)

Excellent dac-amp. Currently running from 12v supply with Mission M71i speakers and Volumio os/application. Cannot fault performance.