I was really looking forward to review this Sonance - 2-Ch. Outdoor Streaming Music System for use on my outdoor patio in exchange for the product. Sonos' speaker quality is world renowned. When I received this unit I was immediately impressed by the extra care and design of delivery-packaging the factory folks took to ensure this unit arrived undamaged and ready to install. It has been raining for over a week in my neck of the woods, and, have not been able to install these fantastic speakers on my patio. So, I thought I would set this Sonos system up, temporarily, using my record player. I have an extensive vinyl record collection and love the full spectrum sound of analog recordings as they were meant to be heard. My record player has a pre-amp, which is required to use with this Sonos Amp. When I finally got this system configured I was thoroughly impressed with the analog sound reproduction spectrum, which is much more dynamic then any digital. These are quality-built and engineered speakers. YaHoo! What do I LOVE about these Sonos Speakers? ** Sound – The incredible mid-ranges, and robust bass are candy to my ears. At low or higher, volumes of sound, the clarity and frequency ranges of between 65Hz – 30kHz are phenomenal. Even though the average person can only hear from the ranges of 20 Hz to 20 kHz these speakers encompass the whole gambit of the auditory sensation. They provide an excellent, sound spectrum with flawless, background nuances, which is so important when playing analog, vinyl media. Without a sub woofer these speakers present such a pronounced bass with resonating kick drum and flowing bass guitar, I am super-pleased. These two Sonos speakers rival my high-end Bose, which need a sub woofer at a higher crossover level to deliver the same quality bass. These Sonos, two-channel, streaming, outdoor speakers are well-built. It is obvious that they were designed for large spaces (outdoor) to deliver outstanding sound quality. I turned the volume as loud as I could endure, and, the distortion-free-quality was evident. These Sonos speakers are worth the money! WooHoo! Each speaker is equipped with a 1-inch cloth, dome tweeter with a 6.5-inch glass fiber cone woofer. Keep in mind that these outdoor speakers are 'water-resistant', NOT waterproof. They really need to be installed under an eave, for rain protection, or other 'sheltered', outdoor locations. ** EZ to Mount – Sonos furnishes the bracket housings along with the hardware to mount these speakers anywhere outside to wood surfaces on your home. The brackets will also mount to brick, concrete block surfaces, or any other type of masonry surfaces with the appropriate fasteners. They can be installed both horizontally or vertically. They 'lock' into the furnished brackets, but can easily pivot to direct the sound where you desire. I plan to install them under my eaves on my masonry walls in my patio area. ** Set Up – Out of the box the hardware, speaker setup and connections to the Amp are pretty basic and straightforward. The spring, speaker wire connections in the speakers are simple and quick to install (see pics). Speaker wire is NOT furnished, so I used the least resistance wire at 14 gauge, which is the highest gauge acceptable, that the Sonos speaker folks recommend. Installing the speaker wires to the banana terminals of the Amp is just as simple as long as the speaker wire, 'polarity' is maintained. ** Sonos & I Port Connect App - Although my Linksys Mesh Router shows the Sonos Amp is on-line in my 2.4 GHz Radio Frequency, I could never communicate with it through the Sonos App, or, the I Port Connect App. However, I was able to use the Amp in 'manual' mode with the touch-control volume icons. It delivered great sound even though I was not able to access any other App features to adjust the bass, treble, and volume through my I-Phone. After 3-days of repeating all the suggested remedies in the 'troubleshoot' steps, I tried unsuccessfully to contact the toll-free Sonos Help Number. I have a 'high-end' amp receiver and finally connected the two Sonos Speaker Units to my auxiliary output to play my vinyl records. It was absolutely amazing at the sound dimensions and response of these Sonos speakers, that I could adjust with my amp's pre-sets, and EQ. ** Conclusion – Since I could not utilize the features of the Sonos Amp through the Sonos App, I cannot give my opinion fairly. I will state that the price of the Sonos Amp by itself is high enough to suggest looking into other quality amp-receivers, which may offer superior, easier, connection features, Bluetooth, Wi-Fi, and more auxiliary inputs and outputs. Love the Sonos speakers, but cannot recommend the Amp because of my connection issues.