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RAKK USB -> SPDIF Features, requirements, and specifications: The RAKK USB -> SPDIF converter uses the TI PCM2707 DAC, providing adaptive isochronous audio stream playback at 32, 44.1 and 48 kHz sampling rates. The RAKK USB interface with the RAKK dac Mk III and the RAKK dac Mk III Power Supply is designed for complete galvanic isolation to avoid the introducing digital noise from the computer into the audio system. Galvanic isolation is very important for providing the cleanest audio signal. Power supply requirements are 12VDC at 75mA, which can be supplied by the RAKK dac Mk III Power Supply Kit. PC board dimensions are 3.8" x 1.6" (9.7cm x 4.1cm). The board can be mounted using stand-offs through the corner PC board holes or by L-brackets through the holes adjacent to the USB connector to a back panel with the USB connector protruding through a hole in the back panel or connected to a panel mount USB jack (such as that made by Neutrik) using a short USB cable. The Diagram illustrates the interconnection of the RAKK USB -> SPDIF and the RAKK dac Mk III. RAKK USB USB-to-SPDIF Converter without LL1572 for use with RAKK dac $29 RAKK USB USB-to-SPDIF Converter including LL1572 for use with other DACs $55 Neutrik NAUSB-W-B chassis panel mount USB connector $8 USB cable (1 ft) $8 RAKK USB -> I2S Features, requirements, and specifications: The RAKK USB -> I2S converter uses the TI PCM2707 DAC, providing adaptive isochronous audio stream playback at 32, 44.1 and 48 kHz sampling rates. (picture coming soon.) The RAKK USB interface with the RAKK dac Mk III and the RAKK dac Mk III Power Supply is designed for complete galvanic isolation to avoid the introducing digital noise from the computer into the audio system. Galvanic isolation is very important for providing the cleanest audio signal. Power supply requirements are 12VDC at 50mA, which can be supplied by the RAKK dac Mk III Power Supply Kit. PC board dimensions are 4.9" x 2.35" (12.5cm x 6.0cm). The board can be mounted using additional stand-offs through the corner PC board holes directly above or below the RAKK dac Mk III and connected to a panel mount USB jack (such as that made by Neutrik) using a short USB cable or by L-brackets through the holes adjacent to the USB connector to a back panel with the USB connector protruding through a hole in the back panel. The Diagram illustrates the interconnection of the RAKK USB -> I2S and the RAKK dac Mk III. RAKK USB -> I2S Converter $49 Neutrik NAUSB-W-B chassis panel mount USB connector $8 USB cable (1 ft) $8 2007 Year-End Sale 1. Version 1 Combo Input bare board with schematic and parts list - $15 (seven available) 2. Integrated Active Output - $199 This is a prototype of a design intended to provide very good sound at an affordable price. It uses a very different circuit from the standard Active Output stage and does not require output transformers. The unit is assembled and tested. The board includes both the amplifier and the power supply so a separate power supply is not needed. A second bare PC board is included so you may build a second unit sometime in the future. The sound of this amplifier is very good but not up to the quality provided by the standard Active Output stage. Photo and schematic on line at http://www.raleighaudio.com/iao.htm (one available) |
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