FiiO X5 (2nd Gen) Portable High-Resolution Audio Player
Native DSD128 decoding
Discrete analog volume control, SACD ISO direct decoding. The all-new X5 utilizes an all-new digital audio architecture JZ4760B+SA2000+PCM1792A+PGA2311A, and is able to decode native DSD64/128, and directly play SACD ISOs. Other lossless formats such as WAV, FLAC, APE, WMA, ALAC, AIFF, etc. are also supported at up to 192 kHz/24 bit. To avoid interpolating the DSD signal for volume control, we added Texas Instruments' best analog volume controller PGA2311A, ensuring the most faithful reproduction of DSD while avoiding issues with knob potentiometers such as channel imbalance and poor durability.
Only the best parts
The all-new X5 preserves the top-flight PCM1792A from Texas Instruments, coupled with the new OPA1652, with great dynamic performance and FET inputs for I/V conversion, realizing extra-low distortion (0.00005%) and noise. Also utilizing two top-flight OPA1612 for lowpass filtering and voltage amplification for extra-low distortion (0.000015%) and noise (1.1 nV/). Finally, to attain sufficient driving current for wide sound stage, highly-dynamic musical performance, and good bass power, the headphone output stage employs two BUF634U for current buffering, supplying up to 250mA current output (67% improvement over X5 1st gen).
Dual crystal oscillators supplying the most precise timing
The all-new X5 employs two silicon crystal oscillators, handling multiples of 44.1kHz (44.1/88.2/176.4kHz, DSD64/128) and 48kHz (48/96/192kHz) respectively. Moreover, it employs the SiTime MEMS oscillator made in USA; compared to traditional quartz oscillators, it has a wider working temperature range and jitter within 1ps, improving accuracy by 25 times.
From "off" to on in 0 seconds flat
Deep-sleep standby for instant-on music in everyday use. On the basis of the X5, we applied the newest technology from the likes of smartphones onto the all-new X5. Through the engineers' efforts, the all-new X5 successfully reduced standby power consumption to <5mA, so that it may remain in standby for about 4 weeks from a full battery.
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