2 Years Local Warranty. Any mention of "us," "we," "our," etc is by Campfire Audio, not AV One. Campfire's new premium, portable DAC/AMP provides incredible sonic performance in a lightweight, durable, and convenient style. Overview Relay features a high-performance DAC chip, the AKM SEQ 4493, unique for its incredible tonality and analogue warmth. After extensive testing and sampling of the wide range of DAC chips available, Campfire's R&D team came to appreciate the AKM 4493's performance above the rest. On top of it's incredible sonic performance, and convenient, compact size, Relay allows further refinement of your HiFi sound with six selectable filter modes, Hi/Lo gain settings, and both 3.5 & 4.4mm outputs, PCM and DSD playback, and wide range of compatible bit rates and sampling rates. Rounded out with easy media playback controls, plug-and-play USB-C compatibility, and a lightweight, durable CNC aluminum housing, Relay will effortlessly elevate your listening experience. Highlights AKM SEQ 4493 DAC chip Two ultra-low-noise, high-output drivers High/Low gain modes Six selectable filter modes Media playback controls 60-step built-in volume controls 3.5mm single ended & 4.4mm balanced outputs DSD and PCM playback What’s in the Box Relay DAC/AMP premium portable hifi solution USB-C to USB-C Cable RipStop Cushioned Accessory Bag Microfiber Cleaning Cloth Technical Specifications USB 2.0 Type-C Low Gain: 1.35 Vrms (Single-ended) 2.7 Vrms (Balanced) High Gain: 2 Vrms (Single-ended) 4 Vrms (Balanced) PCM and DSD Playback Windows 7*/8*/10/11, Mac OS, Android, iOS *Windows 7/8 require ASIO driver 16/24/32Bit, 44.1/48/88.2/96/176.4/192/352.8/384/705.6/768kHz Product Dimensions: Approx 57mm x 23mm x 10mm