That amp was about $2K so this time I thought i'd go all cheap and buy what I presume is a d-class amp just to see how it works. I was going to buy a PCB module to play with but I know i'll never have the time to case it properly. I find amplifier technology pretty interesting from a technical perspective and digital amps in particular (the way they work and their efficiency).
I got one of these. FWIW I don't think i'll use "audirect" again to order anything, it just seems to get lost in deal-extreme's ordering system which is still just in china anyway. Actually I was a bit drunk when I ordered it so I got 2 (well I have a 4 speakers + a centre) and the second is the model with the usb input mp3 player which hasn't arrived yet. Yeah I don't know what I was thinking with that, but maybe it'll come in handy or at least doesn't affect the amp part if I plug it into something else.
Anyway ... yeah it's tiny - it's not as deep as a DVD case is wide either. It's about the same size as my mele. It came with a small laptop power brick that's about the same size as the one for my thinkpad. It's marked 19v @ 3.42A so that's a 65W PSU which is clearly not enough for "100W" no matter what ohmmage the speakers are! Probably the spec of the amp chip I guess. Still amp power has always been fraudulently advertised so there's no surprise here.
My VAF speakers although a bit long in the tooth are pretty sensitive so it puts out enough volume for a suburban house and I managed to burn one out with my old amp so i don't really want too much anyway. I've got it plugged into the mele and am using it as an internet radio player for the moment. I tried it plugged it into the tv monitor output but for some stupid reason the tv sends the signal after it has been through the volume control so it wasn't any good as a line-out (maybe i had the wrong output, it's hard to get to). I didn't try the headphone output.
I haven't run it very loud for very long but I had it running for a few hours yesterday at about as loud as I might want it while working. After that the box itself was stone cold although the PSU was only a little warm (much cooler than my thinkpad) so I guess it wasn't using many watts.
I'm sure the sound isn't going to win any audiophiles over but i'm not sure their opinion is worth much either. It's more bassy than my old amp which isn't a bad thing although it seems a bit harsh in the mid frequencies when I turn it up, but loud things are harsh so it's hard to tell what's to blame. Could also just be the signal, mp3 artifacts becoming audible, tired speakers, or just the gyprock box of a room it's in.
Not sure i'd recommend it to anyone else but for now it saves me having to get something better and i had a reasonable idea what i was getting.
I just got a mail about my contract restarting soon. Well to be honest I was getting a bit bored with life as a 'man of leisure' but that doesn't mean I wanted it to end either. But I suppose that crust wont earn itself. Good reason to get away from this thing for a bit and get out into the fantastic autumn weather we've been having anyway. Off to buy a new bike tyre and then find some cold beer.
PS I just read the back of the box. One of the better* engrish translations I've read in a while.
Products throughout the sound system components using the United States imported high precision components, static, dynamic output digital audio signal waveform is ideal, the sound is really beautiful!Digital power amplifier, sound, very resistant to high and low frequency balance, control force quite amazing, sweet voice soft, medium thick warm, low frequency driving, high frequency resolution is very high and the soft linear flavor, the sound very melodious, very resistant to. Listen to the modern style of music performance is very outstanding also does not appear harsh, just feel very clear transparent, maintain one's original pure character. Listen to the violin to restore enough soft enough soft, let tweedle to maintain a proper and just bright luster, but also can be the powerful piano keystroke behaved most in cisive, great sense of shock; listen to the orchestral music with various musical instruments to further improve the texture, can exhibit a woodwind instrument soft delicate texture, also can let a brass instrum ent the sound become more and more high and clear. With high sensitivity to sound better! Playing soprano light, sweet moisture, melodious sound, very resistant to. Application: automotive, mobile advertising, clothing store, barber shop, recreation, library, business super, home theater, factory workshop, compact, simple, high-quality sound system solutions, etc..Can external audio input. you can connect the computer, mobile phone, CD, VCD, DVD, MP3 digital audio signal input......Spacing as in the original but formatted for screen.