QA660 enthusiast mastering digital turntable lossless music player

Features Support SD / SDHC / SDXC, maximum support 128GB SDXC card (future software upgrade can support larger SD card). Supports WAV, FLAC lossless formats and other mainstream MP3 lossy compression format. Support 24Bit / 192KHz high-bit-rate digital audio formats WAV and studio mastering WAV file playback. Support WAV / FLAC file playback associated with CUE, CUE supports ANSI, UNICODE, UTF-8 encoding. OSD supports Simplified Chinese, Traditional Chinese, English. AMOLED 2.8-inch color display screen, a contrast ratio of 10,000: 1, allowing you to use the remote control to select a song in the more long-range search. Aluminum Panel Remote control key with more quickly, easily and quickly search or locate a song, at the same time to achieve a more humane control. To delete a song with features, the use of remote control can be put on the SD card do not like the song directly removed, more use of the song management. Power-fast boot, usually the operating system of the machine boot time is very long, and easy to hang, to use a great deal of inconvenience. Our software is stable, fast boot time. One filled with songs 16G card boot time usually can be completed in about two seconds, 32G filled with thousands of songs over the SD Card power need only 3-4 seconds. With power-down save feature automatically saves the currently playing song and menu settings options off, then after the next boot last played song starts playing. Select the folder with direct manipulation, with the entire card / folder sequential or random play, with fast-forward, rewind, or return with repeat listen to a song. With time positioning function, you can jump directly to the point specified time to play; with AB segment cut playback. With 3-way coaxial output, one optical output, digital balanced AES / EBU output, 1 IIS / I2S outputs (I2S can be directly connected QA100). While the output and the brightest can interfere with each other. 3-way coaxial output includes two voltage outputs and 1 current output, with an RCA connector and two BNC connector. 3 outputs sounds slightly different, to meet different timbre Shaoyou different pursuits. -------------------------------------------------- ------------------------------ microcontroller design features a single-threaded application architecture, completed by the addition of remote control decoder chip, high real-time, Ultra Low Jitter is sound with high quality assurance. Low Jitter 1PPM double precision compensated crystal designed by 22.5792Mhz and 24.576Mhz corresponding to different bit rates to ensure high-precision, low-jitter digital audio clock. 24Bit true digital audio processing core, supports up to 192K samples. The 2-way low noise and have Remote Sense of the op amp + + expansion flow discrete reference voltage circuit for the two audio oscillator to provide ultra-clean power, respectively, to further improve the sound quality. Audio and control board are in a 4-layer circuit board design, to ensure the full integrity of the ground plane and digital high-frequency signals, while ensuring a low internal resistance of the power supply circuit. The audio portion and the control portion of the power supply, ground whole separation system design, to a machine as two separate split designed to eliminate the production of digital sound. Using a custom high-quality sealing ring cow three outputs for the part of the independent power supply to the interaction of the parts to a minimum. Linear precision multi-stage regulator, multiple regulators, RC filter, LC filter ... for each module of the independent power supply to reduce the impact between each other to ensure adequate and transparent sound out clean. All the features of the software are built can not be done on the basis of the sound effects, all affect the sound quality of the format or function we will not hesitate to cut. Most raw materials are new original spot direct procurement from abroad, although more expensive than domestic prices, but to ensure genuine and quality. Custom 75-ohm BNC coaxial seat to ensure optimum impedance matching. Digital audio output follows all industry standard electrical isolation output (except I2S), having a large current drive capability to ensure signal quality. Specifications Output Impedance: 75 ohms (coaxial); 110 ohms (XLR AES / EBU) Note: coaxial BNC-2 as a current-output. (Current-output requires the receiving end of 75 ohm resistance to ground to restore the current to voltage, so there may be less than 10% of the receiving device because they do not have this resistance can not lock signal). Output voltage: Coaxial (0.5V pp); XLR (5V pp balance). Digital Output: PCM / Dolby Digital / DTS format. Sample bits: 16Bit or 24Bit. Sampling rate: 44.1Khz, 48Khz, 88.2Khz, 96Khz, 176.4Khz, 192Khz. Audio formats supported: WAV (up to 24Bit / 192KHz), FLAC, MP3. Clock Source: The two custom 1PPM low phase noise TCXO TCXO. Digital output parameter (QA660 most objective parameters encroaching Audio Analyzer limit) phase jitter (Jitter): <20pS RMS dynamic range:> 140dB SNR:> 140dB without weight total harmonic distortion: <0.00002% @ 20-20k Hz Power consumption: <10W Input Power: AC 100-120V or AC 220V-240V 50 / 60Hz (machine switch) (did not specify when ordering will be switched to AC 220V-240V position). Remote Control Material: aluminum panels, plastic case, plastic buttons; remote control Size: 237 * 48 * 22mm; Remote Control Weight (without batteries): 135g Host shell material: Aluminum Host Size: 290x240x90mm (including connectors and feet exposed nails). Net weight: 2.1KG Total weight: 3.5KG interfaces: an RCA coaxial digital outputs 2 BNC digital output interface (which is a current-output) a side port optical digital output interface a digital balanced AES / EBU output an I2S (IIS) digital output interface a power input socket insert an SD card interfaces