It's setup is dirt simple, plug into wall, plug into computer, preferably via a digital output such as micro usb or the optical, both are plug and play, no drivers needed. The amplifier itself came with a few pamphlets and a user manual. #18 Michigan vs. The box also contained a USB cord… The SMSL AD18 is a full digital amplifier, the exact opposite of an A-Class amplifier. Could this be the best amplifier under $150? If the bigger amp like the M9 sounds almost twice as good, we might have a killer. Only 10 left in stock - order soon. $73.99. SMSL AD18 80W2 Bluetooth 4.2 HiFi USB DSP Digital Decoding Power Amplifier 4.1 out of 5 stars 189. 1. The SMSL SA300 is loaded with features and customization. Find longitude and latitude / GPS coordinates of location, place and city. 2. It measures three inches tall, three inches wide, and just over 7 inches deep, and is available with red, blue, or black trim. Although the user manual looks small, it was quite thorough on the operation of the amplifier and remote control. A reasonable price and low-latency Bluetooth 5.0 receiver make the SMSL SA300 (about $119) a worthwhile choice for most average consumers. SMSL SA100 Bluetooth 5.0 Amplifier 50W x 50W Power 2 Channel Stereo Audio Amplifier Treble Bass Desktop Amp (Black) 4.4 out of 5 stars 49. SMSL SA300 Review vs. 18,129 fresh tabs. $123.24. The SMSL AD18, despite their naming scheme being a little funky, is an absolutely wonderful product.