CAYIN RU7 Portable USB DAC/Amp Dongle with 1-Bit Resistive Ladder DAC, DSD64/128/256 Support, OLED Screen, and Included Leather Case

1-BIT RESISTIVE LADDER DAC – Discover unparalleled audio excellence with the RU7 by Shanling. Its custom-built micro-miniaturized 1-bit DAC circuit effortlessly converts digital signals to immersive analog sound. Meticulously designed with discrete components and a 4-channel architecture, it rivals the renowned discrete DAC of Shanling's N7 DAP. With 128 high precision thin film resistors and a 3-level active LPF, the RU7 delivers pristine audio quality and convenient volume adjustment. HIGH POWER BALANCED OUTPUT ACROSS 4 CHANNELS – Experience a notable upgrade with the system's dual amplifiers operating in parallel, delivering a high-power balanced output across four channels. The second amplifier acts as a parallel unity gain inverting phase amplifier, greatly amplifying your phone's output power for an impressive performance boost. DISCRETE VOLUME CONTROL – The RU7's discrete resistor network volume control provides 100 precise steps, meeting high standards for precision, noise, and power consumption. It satisfies the needs of discerning IEM users with 3 resistor segments and switching relays. AN ALL ROUNDER – The RU7 boasts a high-resolution OLED screen (128x64 pixels) for clear playback information. Its hardware volume button doubles as a menu selection button, adding convenience. With chamfering for an ergonomic grip and smooth curved surfaces, it combines aesthetics and comfort. LEATHER CASE INCLUDED – Enjoy the luxury of a custom-made magnetic leather case for the RU7. With a precise cutout and meticulous craftsmanship, it offers a snug fit and stylish design. It comes with two metal plates and adhesive tape pads for added convenience.