Includes Oppo PM-3 Closed-Back Planar Magnetic Headphones and Oppo HA-2 Portable Amp/DAC

Amp specifications

• Dimensions: (W x H x D) 2.7 x 5.375 x 0.5 inches, 68 x 137 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.
• Recommended Headphone Impedance: 16 Ohm – 300 Ohm.
• Maximum Headphone Output Power (Per channel): 300 mW into 16 Ohm, 220 mW into 32 Ohm, 30 mW into 300 Ohm.
• Headphone Amplifier Output Impedance: 0.5 Ohm.
• Output Jacks: 3.5mm stereo headphone, 3.5mm stereo line-out.
• Input Ports: Analog: 3.5mm stereo audio-in. Digital: USB A for iPod/iPhone/iPad; USB micro-B for smartphones with USB OTG feature and computers.
• DAC Chip: ESS Sabre 32 Reference ES9028-Q2M
• 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
• Included Accessories: Power Supply Unit (Rapid Charging Charger)
  USB A – USB micro-B data and rapid charging cable
  USB A – Lightning data cable (for Apple devices)
  USB micro-B to micro-B data cable (for Android and other smartphones)
  3.5 mm – 3.5 mm stereo audio cable
  Silicone rubber band (2 pieces)
  User guide and warranty documents
• 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.

Condition is good for age and use. Both tested and working.