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TRASAM HA2-PRO OPA1688A OPA2140A 16-600ohm Audiophile HiFi Portable headphone Amplifier  


Almost desktop amplifier 20V voltage amplification

  • ± 10V master power supply, Using positive and negative power supply, Up to 20V voltage, Can be comparable with the desktop amp voltage, Easy to drive big sound field and varies earphones.

Multi-core op amp in parallel to drive

  • Multi-op amp mode, Sound quality is guaranteed
  • Use of power, parallel driving doubled, Sound field is wide, and Details are rich and clear

Current amplification OPA1688A

  • New TI High Current IC OPA1688A, New Filtered Electromagnetic Interference (EMI)
  • New Filtered Radio Frequency Interference (RFI), Output current 75mA,it Is 260 times that of 2604,Sound features full of magnetic .

Voltage amplification OPA2140A

  • The new OPA2140A,Ti new generation of high precision op amp
  • Sound quality features sweet but not greasy, soft and brave, Better than muses02


  • Audio input and output port: 3.5mm stereo interface
  • Battery charging interface: Micro USB interface
  • Charging current: 1A
  • Lithium battery capacity: 2400mAH
  • Playback time : more than 16 hours
  • Amp internal voltage:± 10V
  • SR:> 110dB
  • Distortion (THD + N) :0.0003%
  • Output power: 250mw
  • High and low impedance selection switch
  • Headphone relay protection circuit
  • Low battery indication circuit
  • Suitable for 16-600Ω headphones
  • Size: 105 * 60 * 14mm ( L. W. H)
  • Gross Weight: 250g


  • USB cable

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Due to the impact of the COVID-19 pandemic, global international shipping will delays. The delay at our Hong Kong post office is very serious, so we have changed to other fastest or most efficient international shipping. Now the normal estimated delivery time may be delayed by about 1-2 weeks. In some countries where is higher free-tax rate, we will provide free courier service as much as possible.

Free Shipping

All listed items will be shipped though Registered Airmail with tracking number if there is no extra shipping method option listed or shipping description in the product page.

Economy shipping: Will be shipped without tracking number.

Registered Airmail : Will be shipped via such as Hong Kong post , Deutsche Post , Netherlands Post , Singapore Post, you can leave us a message if you have any requirement about the shipping method .

It will be shipped via Hong Kong Post by default, Europe countries can choose to be shipped via Deutsche Post or Netherlands Post, it is also FREE, pls leave us a message if needed.

Express service: Will be shipped via DHL/EMS/UPS/FedEx

  • Views: 19170
  • Brand: TRASAM
  • Product Code: HA2-PRO
  • Availability: In Stock
  • $99.00