![]() If this sounds confusing, it’s because it was.and will only make sense when you inspect the Input/Output (I/O) connectors for both boards. In order to draw 3.3v from the AMP V3 board, the 2-pin power connector on the SPDIF IN board needed to mate with a 4-pin connector on the AMP V3 board (for an interface I had no intention of using), and no such “cross-type” cable was provided. I used this configuration for listening tests later on. In fact, I had to create a custom ribbon cable to power the SPDIF IN board from the AMP V3 Board (notice the cable splices in the figure above). One of the most complicated aspects of using the DIY boards is sorting out all the different configurations and interconnect cables. I also discovered that you may need to check the volume setting every time you remove/apply power to the board. Warning: the initial firmware update takes a long time! Tip: check the app volume (or use the IR remote control) to turn up the volume after the initial connection, no matter the source (Wi-Fi/BT/USB/Aux). Available (2.4 GHz) Wi-Fi network (have your password handy).4Stream app (download from Apple or Google store).I recommend keeping your Wi-Fi access point, board(s), and phone in close proximity to each other for the initial setup which requires the following: Also, I wouldn’t attempt removal of the Wi-Fi and/or Bluetooth (BT) antennas (they are essential to proper operation), as the U.FL (also known as IPEX or AMC) connectors are fragile and only rated for about 30 mating cycles. One suggestion right off the top: the instruction manuals for the PRO V3/AMP V3 boards are way too small to read (at least with the naked eye), so I would download the PDFs from Arylic’s website for viewing on a computer screen (where you can magnify the view). The unboxing was straightforward: each board comes enclosed in an electrostatic bag in its own plastic container, complete with instruction manual and the necessary interconnect cables (more on that later). SPDIF OUT board (both optical/Toslink and coax) SPDIF IN board (both optical/Toslink and coax) Clear acrylic cases for the PRO V3/AMP V3 boards.I also received the following accessories, which are included in this review: Bluetooth Amplifier Board with WiFi Up2stream Amp V3.Wi-Fi Stereo Receiver for DIY Speakers Up2stream Pro V3.I received the following hardware from Arylic to test: A company called Arylic now offers what they call a DIY line of audio equipment that can serve as the basis of a low-cost home stereo system. Things like audio amplifiers and Digital-to-Analog Converters (DACs) are now available in modular form to hobbyists and serious audiophiles alike for tens-instead of hundreds-of dollars. performance ratio for key pieces of audio equipment by an order of magnitude. First it was Personal Computers (PCs), then it was telecommunications, and now it is happening to the audiophile world: technology has shattered the cost vs.
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