[Nankai]

questions in FAQ.

1. Headphone output impedance and its mW per channel
FAQ 9. Please tell us headphone output impedance and its mW per channel.
Current headphone amplifier board design: 100mw - 16 ohm; 64mw - 32 ohm; 80mw - 150 ohm; 40mw - 300 ohm. It can easily boost HD580 and K240DF.
Modular Amplifier Bay called GanQi Bay. We will provide its spec detail to headphone amplifier builders.

2. How will UI be like
FAQ 7. How will UI be like?
UI will be similar to an ancient ipod.


3. Accessories it will include (Like 128GB SDHC card, digital input adaptor jack, etc.)
Accessory: Lithium polymer battery, External Power Supply, USB cable, mini-coaxial adapter

4. Warranty
Warranty policy: 30 days refund, 90 days free replacement and 1 year repair. Customers will be able to buy 2-year free repair warranty plan.

5. Battery and module upgrade possibilities
FAQ 10 The battery we currently provided is almost the best Lithium battery we can find. Four sure we will provide new battery for upgrading when battery factories can provide higher capacity battery in the future.


6. Is opamp OPA627AU, OPA627BP or cheapy OPA627AP (I'd immediately order ones if it's OPA627KM lol)
FAQ 12 The opamp is OPA627AU. We don't want to use this most expensive chip and "electricity eater" at the very beginning. We made our decision after a test between 10 different opamps. OPA627 is the most appropriate opamp in this circuit.

7. How much can I DIY with this ones (like opamp rolling, sound customizing in circuit like compass, etc.)
FAQ 8. How much can I DIY with this ones?
I can not image how you will modify this little guy. The board is so small, and full of expensive SMD components. In addition, there is no DIP socket on the board, or anywhere in the player.