SRT1 WiFi App Controlled Media Streamer, Bluetooth, Optical Input, Ethernet Connection, Black Series. simple and cheap way to do it. This feature-rich wireless streaming preamp connects to existing home theater AV receivers or Hi-Fi systems and delivers 24-bit audiophile-grade sound quality from a music library, Spotify, Napster, iTunes, or iHeartRadio. and can be used with Alexa to play other music sources or internet radio, all easily controlled with the free OSD Player app for smartphones or tablets. Now there's no reason to give up the rich-sounding music offered by traditional amps/receivers and vintage speakers for the convenience of Wi-Fi and Bluetooth! Put Hi-Fi on Wi-Fi Wireless audio has come a long way thanks to Wi-Fi and Bluetooth, and now customers can enjoy the tunes from the kitchen to the garage. The downside to streaming is sound quality, which is usually compressed by the tiny digital-to-analog converters, or DACs, in smartphones and tablets. The SRT1 bypasses the DAC and uses its own more robust converter to deliver a 24-bit (DVD quality) audio signal to the speakers. The higher bit rate and uncompressed signal reveal sonic subtleties that make a great song sound even better. Advanced Inputs and Outputs This app-based Wi-Fi Link Bluetooth receiver packs advanced connection capabilities with four key source inputs including TF (SD) card slot and 3.5mm analog line inputs. The SRT1 also includes a slim-line IR remote for direct access to all four sources, as well as volume up/down, play/pause, and previous/forward buttons. Line outputs include a digital optical output and a 3.5mm analog aux line output. There's also a LAN input for direct connection to a Wi-Fi router or a WPS button for wireless connection, as well as an RS232 connector for interfacing with third-party control systems. Whole-home audio in the palm of your hands Our SRT1 is also an easy and affordable way to expand the whole-home audio experience for customers on a budget. Simply connect additional SRT1 preamp/amp combinations to create more source/zone options for multi-room and multi-source systems, all controlled from a smartphone, tablet or laptop using the OSD Audio Player app with Alexa interface. Imagine showing this to customers who will think you're a genius! Small Footprint, Big Impact The SRT1 is a stand-alone device that measures just 4" by 6" and requires only a Wi-Fi connection to start streaming high-quality audio at a price that won't spoil the music experience. PZA More features