iBasso DX90 High Resolution Dual Sabre ES9018K2M DACs with Extreme Audio USB Charger & Coaxial Connection Kit [Full USA One Year Warranty from Authorized iBasso Distributor] Dual Soundplus OPAMP OPA1611 with dual high current output buffer BUF634 (by Texas Instrument) IMPORTANT NOTE: Please download the manual below the product details to know the working functionality of the product DX90 package now includes silicone case instead of carrying pouch.  It takes longer time to read music files if the files are too big or the memory card is too big. When customer wishes to download music to internal storage, He needs to use the included iBasso cable, not any phone charger, and connect it to computer. Music files can be downloaded only from the computer, not directly from the MicroSD to internal storage. Included Accessories - USB cable, Coaxial cable, Burn-in Cable, Silicone case, ProStudio USB Wall Charger(100-240V, 2.0A) and Screen protector. Dual DAC - 2x Sabre ES9018K2M - Dual Mono DAC Design: one ESS Sabre32 ES9018K2M DAC chip per channel allows for the best possible dynamic range, and channel crosstalk. 6.5 times more detail than a traditional CD.