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Cayin RU7 Portable USB DAC/Amp Dongle 1-bit, multiple possibilities. After the debut of portable audio's first discrete 1-bit, all-to-DSD, music player in N7, Cayin Audio have miniaturised the technology further in RU7. This latest novel 4.4mm USB DAC/amp from innovators Cayin therefore promises to upsize your enjoyment of music with the same decoding topology that saw N7 greeted with aplomb. Built of 128 individual resistors, RU7 converts all your normal PCM playback – via CD rips, Hi-Res downloads and Spotify, Tidal or Apple Music streaming – into DSD before decoding to analog. Its size is proof that no task is too big for Cayin. Outputting in 4.4mm, RU7 is Cayin's perfect complement to the PCM, R2R, RU6. Bringing up to 400 milliwatts to bear, the goodness of an all-to-DSD approach to decoding can be heard with all manner of portable Head-Fi. All audio formats are passed as DSD through RU7's precise 1-bit decode. Cayin returns to Sony's Scarlet Book SACD revolution of the 1990s and elevates that conversion philosophy with modern mobile dongle hardware.  RU7's highlight is its 1-bit decoder, converting all PCM files to quad-rate DSD first via DSP logic, while letting native DSD material flow on to the 128 discrete resistors in its DAC – in actuality a simple analog low-pass filter. There's zero error at the point of conversion in a 1-bit DAC. There, Cayin relies on Pulse-Density Modulation (PDM)'s total accuracy, and sheer ease of decoding. The pitch for DSD's 1-bit conversion is digital at its simplest and closest point to analog – level represented only either as a 1 or a 0, switching on or off. To achieve analog, the bitstream is simply low-pass filtered. Cayin's all-to-DSD discrete DAC is accurate ... and also elegant, breakthrough and historic in personal audio. It draws inspiration from the illustrious halls of Hi-Fi, where each EMM Labs, Nagra Audio, Playback Designs, PS Audio and of course, N7's, 1-bit DAC release has been greeted with accolades and fanfare. RU7's discrete proprietary tech immediately differentiates itself from commercial DAC chips, where IC packages are often too small to perform an ideal 1-bit conversion. RU7 also avoids the errors of dynamic element matching inherent to 2-7 bit delta-sigma decoders.  The decoded analog goes through Cayin's specially designed resistor-based analog volume control for perfect channel matching at any level – facilitating that very special 1-bit discrete DSD decode and importantly preserving your music's true dynamic range resolution. A series resistor operates with shunts as voltage dividers in tandem with relays, to maintain near-perfect resolution of your music and a signal-to-noise ratio of over 110 dB. A totally novel volume solution has made this a feat for a USB-powered dongle DAC. Cayin differentiates RU7 from RU6 in offering the former a line-out option in which the volume control is bypassed for a fixed voltage out, perfect for listening into motor stereo systems as well as handy and portable personal speakers. Meanwhile, RU7's output power is doubled compared to RU6's such this DSD DAC is capable of transferring all its forward-thinking fidelity into your prized transducers. Never fear for leaving your reference gear behind for Cayin's latest and greatest every-day carry. SPECIFICATIONS
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A COMPACT AND NIMBLE POWERHOUSEWeight: 25g, small enough to slip into your smallest pocket PACKAGE LIST:
Welcome to A1FutureShopA1FutureShop is an Australian Owned Business located at: North Rocks NSW 2151 At A1futurestore, we aim to offer the best level of customer service. Established here in Australia, we are a small business who believe passionately in the products that we sell. We specialised in HiFi and home entertainment. Our aim is to provide a fast and simple purchasing method to our customers and ensure that you get the very best product and services. For consumers and businesses who demand a high quality audio-visual experience, A1futureStore provides a wide range of superior quality products to suit every budget. Our market-leading team of advisors and customer service executives walk customers through the products available to ensure they choose the right product at the right price for their individual needs. We carry products for use with your existing HiFi system, PC or Mac computers to help you get the best sound from your system. Brands we carry : Acoustic Energy, Atacama, Arcam, Audio Technica, Aune Audio, AudioSpace, Cayin, Creek Audio, Hiby Music, Hidizs, Inakustik, Isotek, Kinera Audio, Matrix Audio, Monitor Audio, Project Audio, Shanling, SMSL, Supra Cables, Thor Technologies, xDuoo, Yamaha and Zidoo. Postage Costs/Delivery: In most cases, purchased items will be dispatched within one working day after payment confirmed cleared into our bank or paypal account. Australia wide delivery can take up 2 to 5 working days. Australia wide: Goods under 5kg are ship using Australia Post. Goods over 5kg a courier service may be used. Postage cost please refer to the Postage TAB. Payments: We accept both Paypal and bank transfers. For international buyers only Paypal is accepted. Warranty/Returns: Sales invoice provided. Cayin comes with 12 months warranty. We offer local support. A 7 days replacement warranty from date of purchase. If you change your mind there are no returns or refunds so please choose carefully. Any DOA item please report immediately upon receipt for an exchange. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
