LOXJIE A30 Desktop Stereo HiFi Audio Power Amplifier & Headphone Amplifier, Infineon's MA12070 Chip Class D Amp, ES9023 DAC Chip, USB/Optical/Coaxial/RCA/Bluetooth 5.0 Input (with Remote Control)

Absolutely love, easy to use, Bluetooth is easily connected all the time

I bought both a Loxjie A30 and SMSL A100 as they both featured the Infineon chip and had usb audio. There's not many amps that have both these features.The Loxjie A30 despite having the same chip and numerous more features is more efficient. It uses 1.5 watts idle and 2 watts during desktop listening. The a100 uses 2 watts idle, and 5 watts during use.The A100 has a blue light that never turns off. The loxjie can go completely dark.The A100 does have a a few pros over the Loxjie.- buit in power supply (Loxjie's external supply is surpringly large for the wattage)- easier to change inputs on the device- easier (when placed below your desk) to see/change volume on the device- When unplugging/switching usbs the Loxjie will slightly buzz the speakers. The A100 is silentBesides that the Loxjie has more advertised features that you pay for. Remote, color screen, optical in, equalizer, metal body, higher quality bluetooth, & higher quality DAC (though my ears couldn't tell the difference).The Loxjie also has a headphone jack- though from my research audiophiles say is almost useless. I tested it and it worked fine with my HD6XXs, though I didn't notice any sound improvement over plugging in my headphones into the computer, and I prefer the direct connection.I don't love the usability of the Loxjie and its wheel controls. I think it's mostly designed around the remote which for me is another thing to keep track of and uncessary for desktop use.On the A100 when using USB audio, if you software mute your computer or accidently turn your volume down to 0, it triggers the physical mute on the device. If you turn your volume back up on your computer, it doesn't un-mute. In order to get back sound you have to press the mute button on the device TWICE, and it takes a few seconds. Very annoying and finicky. The loxjie does not have this issue, it just works as you would expect.If it weren't the the mute issue I would have kept the A100 for half the price.

Wanted something I could replace my sound bar and headphone amp for my PC desk setup. Fedora Linux detected the device out of the box. Have a pair of bookshelf speakers and my hd 556s running off this

I purchased this amplifier so I could connect it to my whole house audio system through the Aux RCA connections and to my TV through the optical port. This amp was one of the few I could find that had both and also a sub-woofer output. It is very reasonably priced, so it looked like the perfect solution. As stated, one of the reasons I bought it was because it had an optical input that I was intending to use to connect the TV however, I could not get the optical input to work. All I got was an annoying static-y squeal. Online I have seen that others have had this same issue. Since I did not test this on any other optical devices, I'm not sure if it is a compatibility issue with the TV or if the optical input is just not working properly. Luckily, the TV also had Bluetooth capability, so I was able to get the amp working for my application and I did not have to return it. The amp is driving a pair of Definitive Technology ProMonitor 1000 speakers and a ProSub 1000 subwoofer. Although I would have preferred an optical connection, the Bluetooth seems to be working well and I am very happy with the performance of the amp. Time will tell if it holds up.UPDATE:Now that I have had this amp for almost two years, I am reducing it to one star. After about a year, the LCD display started to go bad. Right now only about half of the display is visible. Recently, one channel on the RCA inputs seems to have shorted out. Whenever I connect anything to the left channel RCA input, it the volume of everything is reduced to almost zero. I know this was not an expensive amp, but I still don't think a $200 amplifier should be disposable after less than two years.

Works great, sounds good, sips electricity compared to my old amplifier. I use it on my desktop PC for stereo speakers.A HUGE gripe though, is it emits massive ammounts of RF interference accross ALL HF frequencies. It's so strong I don't even need an antenna connected to my SDR radio and it looks like broadcast AM stations evenly spread occross the HF frequencies.I'm probably going to keep using it and will try to reduce the interference with ferrite chokes. But, its still not a good thing that it's emitting this much RF signal. If you have any sort of a privacy/opsec concern, you could likely pick up and listen to exactly what you're listening on your speakers if you're using this amplifier.

This is the David in the Goliath world of Dac amp combos. It’s so good! The feature set is incredible. I have it hooked up via usb to my tv and it works like a charm. The itty bitty total package for a soundbar destroyer!