OPPO HA-2 Portable Headphone Amplifier/DAC
OPPO HA-2 User Manual
Designs and specifications are subject to change without notice.
|Dimensions (W x H x D)||2.5 x 6.2 x 0.5 inches, 68 x 157 x 12 mm|
|Weight||6.2 oz, 175 grams|
|Frequency Response||20 Hz - 200 kHz|
|Audio-in Level||1 Vrms|
|Line-out Level||1 Vrms @ 0 dBFS|
|Recommended Headphone Impedance||16 Ohm - 300 Ohm|
|Maximum Headphone Output Power||300 mW into 16 Ohm|
220 mW into 32 Ohm
30 mW into 300 Ohm
|Output Jacks||3.5 mm stereo headphone|
3.5 mm stereo line-out
|Input Ports||Analog: 3.5 mm stereo audio-in|
Digital: USB A for iPod / iPhone / iPad; USB micro-B for smartphones with USB OTG feature and computers.
|DAC Chip||ESS Sabre32 Reference ES9018-K2M|
|Input Format||Stereo PCM, Stereo DSD (DoP v1.1 or native)|
|PCM Sampling Frequencies||44.1 kHz - 384 kHz, 16 / 24 / 32-bit|
|DSD Sampling Frequencies||2.8224 MHz (DSD64), 5.6448 MHz (DSD128), 11.2896 MHz (DSD256, native mode only)|
|Profile||USB 2.0, USB Audio 2.0|
|Built-in Battery type||3000 mAh lithium polymer rechargeable battery|
|Battery Operation Time||Approx. 13 hours for analog source via Audio-in; approx. 7 hours for digital sources via USB|
|Charging Time||Approx. 1 hour 30 minutes|
Normal: No bass boost applied. The frequency response is flat.
Bass Boost: Bass boost is turned on. Low frequency band gets a boost.
Bass Boost Detail: Bass frequency below 100 Hz gets about 5dB boost. The boost gradually decreases from 100Hz to about 500Hz where it reaches the normal non-boosted level.
Now that the HA-2 has been officially launched as of this afternoon (February 20th, 2015) I thought it would be appropriate to start a new discussions thread that was originally started in the Sponsors Forum when we revealed the HA-2 and the PM-3 to the public for the first time at the Rocky Mountain Audio Festival in 2014.
All those who have beta tested the HA-2, we thank you, and we hope that you will contribute immensely to on the HeadFi forums. Your NDAs are over, so if you had any tribulations about posting, don't. Post to your heart's contentment.