QULOOS QLS QA390 Dual AK4497EQ Desktop Music Player & DAC

€ 1.00 · 5 (625) · En stock

Por un escritor de hombre misterioso

Features: 1. Powered by a large-capacity battery, the internal current and voltage are designed according to the standards of high-end desktops. It is a truly removable decoding amp machine. 2. Dual 1000000uF low internal resistance super capacitor for digital and analog partial isolation power supply, similar to the d
Features: 1. Powered by a large-capacity battery, the internal current and voltage are designed according to the standards of high-end desktops. It is a truly removable decoding amp machine. 2. Dual 1000000uF low internal resistance super capacitor for digital and analog partial isolation power supply, similar to the dual-booster design of desktop machines. 3. Balanced amp can output more than 20V voltage, easily push high-impedance headphones. 4. The final stage power tube current output capability is 2700mA, which is very good for driving low resistance and low sensitivity headphones. 5. DAC chip adopts AK4497EQ*2 and supports ALL To DSD. 6. Two femtosecond crystal designs, high-speed precision-controlled CPLD clock processing, and global clock unified and synchronous operation mode. 7. Built-in single-chip single-threaded SD card pure tone player. 8.HWA (LHDC) HD Bluetooth input for easy connection to mobile phones. 9. Two-way USB interface, one for the phone or tablet (no camera kit required), and the other for an authorized Italian interface. 10. Four 3300mAH Panasonic (formerly Sanyo) 18650 batteries provide a total battery capacity of 31200mAH. 11. More than 30 ultra-low noise power chips provide clean power for each circuit device. 12. Headphone interface is complete, single-ended interface: 3.5, 6.35; balanced interface: 2.5, 3.5, 4.4, XLR. Specifications: Internal playback storage media: use an external SD card or TF card plus card sleeve, FAT32 format, currently supports a maximum capacity of 512GB Internal playback support code rate: 16-32Bit, 44.1KHZ-352.8KHZ, DSD64-DSD128 USB interface - USB B port: use authorized Italian interface Combo384, and optimize hardware design, support 32Bit/384KHz4 PCM and DSD256 USB interface -- Micro port: use SA9227 interface, Apple phone and tablet do not need camera kit, support 32Bit/384 KHz PCM and DSD128 Bluetooth Receive: Support Bluetooth 5.0, support Huawei HD Bluetooth HWA (LHDC) and AAC encoding. Coaxial input: 75Ω matched impedance, support 24Bit/192KHz and DSD64 (DoP) Fiber input: support 24Bit/192KHz and DSD64 (DoP) Coaxial output: 0.5Vp-p75Ω, support 24Bit/192KHz and DSD64 (DoP) Fiber output: support 24Bit/192KHz and DSD64 (DoP) Analog output parameters: Frequency response: 20-20KHz Signal to noise ratio: 122dB Dynamic range: 121dB Resolution: 120dB Distortion: 0.0005% Output level: RCA (L&R) 2.5V (closed pre-level) XLR (L&R) 5.0V (closed pre-level) SE (unbalanced) maximum 10.5Vms (high amp voltage, ultra high gain, 600Ω load) BAl (balance) up to 21Vms (high amp voltage: ultra high gain, 600Ω load) Amp output impedance: unbalanced: 0.13Ω; balance: 0.2Ω Headphone matching impedance: 8Ω-600Ω Decoding chip: Ak4497EQ*2 LPF: AD797x2 Volume control (including preamp volume control): PGA2311UA analog program control volume Reference clock jitter: 0.088 picoseconds (88 femtoseconds) Charging interface: Available Type-C port, DC port available, fast charging, QC compatible External power supply: DC5.5*2.1 port, can also be charged (panel switch selection) Life time: 8 to 10 hours Charging time: Type-C general charge: 8 to 9 hours, Type-C fast charge / DC port: 4 to 5 hours Host & Remote Control Material: All Aluminum CNC Integrated Finishing Product weight: 3.0kg in full package, net weight 1.8kg Host size: 20cm*18cm*4.45cm Packing size: 33cmx27cmx9cm Single-ended headphone port rated output power: 32Ω, 1000mW/ch amp high voltage, high gain 300Ω, 360mw/ch amp high voltage, super high gain 600Ω, 180mW/ch amp high voltage, super high gain Balance the headphone port rated output power: 32Ω, 1300mW/ch amp voltage,high gain in 300Ω, 1200mW/ch amp high voltage, super high gain 600Ω, 720mW/ch amp high voltage, super high gain