They're on the
Yulong website and on eBay! Is someone going in early?
Here's some interesting info:
1.LCD display shows the modes. Auto dim after 5 second idle.
2.Input selection. Cycles between Spdif, toslink, aes, usb when pushed. Sampling frequency will be displayed on LCD when signal is locked. DSD logo will be shown when a valid DSD signal is detected.
3.Digital filter mode selection. The default sharp mode has a flat response. When the LED lights up, it is in slow mode which has a slow roll off in high frequency (it is not functional in DSD mode)
4.Jitter eliminator selection. It is bypassed when LED lights up, and sound is tend to slower and softer. When it is on, the sound tend to more focus. However depends on the equipments, you may not hear a difference.
5.Headphone out.
!!! Warning: The headphone jack on D200 is VERY tight, please make sure the headphone plug is fully inserted. In case of not fully inserted, the left and right outputs are shorted and will damage the headphone amplifier! The short circuit can not prevent this situation!!! We don't honor warranty to damage under this situation!!!!
!!! Warning

lease turn the volume to minimum before connecting or turning on equipments. It may sound dangerous loud!
Tips: When in pure DAC mode, the headphone amplifier is shut off - however you may still hear minor sounds from the headphone jack. It is normal.
6.Volume control, turn to change output level in 80 steps. It controls all outputs. Press the volume knob for 1 second to change D200 into pure DAC mode. Volume control and headphone amplifier are bypassed in pure DAC mode.
!!! Warning: D200 outputs a full scale signal in pure DAC mode. You must have a volume control in your system, otherwise the output level could be dangerous high, and might permanently damage your equipment and hearing!!!! You may also face angry family members, neighbors and pets! We don't response to any damage under such condition.
7.Unbalanced analogue audio output
8.Balanced analogue audio output. It has an extremely low output impedance, and you can use it as a balanced headphone amplifier. Volume control must be turned on for such application, otherwise the headphone and your hearing may be permanently damaged. We don't response for such damage.
!!! Warning: Do not use regular XLR-RCA conversion adapters or cables , which normally short pin 3 to ground. You will damage the output stage!!! We don't response for such damage. Make sure pin 3 is disconnected if you want to use the balanced output as unbalanced.
9.Spdif coaxial digital input
10.Spdif toslink input
Tips: Some quality equipments have a poor digital signal quality, and might cause malfunctioning under higher bitrates.
11.AES-EBU digital input
12.USB input. You must install driver for Windows system, and please download from http://yulongaudio.com/en/down.asp.
You must make sure the playback software can self adopt digital file sample rate. ASIO and WASAPI is preferred. Play back software must support DSD mode doe DSD and SACD playback. When valid DSD signal is detected, the LCD will display input USB DSD
13.Voltage selection.
!!! Warning: Please make sure you choose correct voltage before connecting to mains power. Otherwise you may permanently damage D200 and your equipment. We don't response for such damage.
14.Mains power socket, power switch and fuse box. We include a back up fuse in the fuse cpmpartment.
Tips
Please let D200 warm up for at least 15 minutes for its best ability
Please make sure the air circulation - D200 is warm because of the design.
Please use high quality USB cable. Don't connect D200 via a USB hub, or extension cable (for example most USB ports in the front of tower case). Connect to the one directly on motherboard.
Make sure the mains power's grounding is working. Otherwise there might be a noise.