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DETHONRAY HPAMP HA-2 16-600ohm HiFi Audiophile Portable IEM Headphone Amplifier AMP


DETHONRAY is based on GEEK spirit, with the concept of focus, innovation and pursuit of perfection, and is committed to combining real and natural listening feeling with simple user experience. To achieve this goal, the team in the structure, electronics and acoustics are carefully designed and a large number of experiments, to ensure the stability of the product. In terms of software and electronic design, we insist on deep customization and innovation to ensure the real-time and integrity of audio data and finally bring unparalleled auditory experience to users.

The OP amplifier and emitter follower are used in the core of the amplifier. The design of the op amp is no longer in the black box, which overcomes the shortage of the output current of the op amp and the inability to realize the whole class A output. In addition, compared to a fully discrete component circuit, the circuit's front-end voltage amplification uses a mature op amp, which avoids the noise caused by not strictly transistor pairing and improves playability. Users can replace it on their own without using an op amp to adjust the amp sound quality and other performance. The amp is powered up in a full Class A working state. The back-end current amplifier circuit uses a push-pull emitter follower, and a constant current passes at all times. Make sure the amp is still working in full A when playing big dynamic songs. Avoid crossover distortion for Class AB amplifiers. In the bias voltage part, the circuit structure blue LED and double crystal tube are independently developed to make the last four audio power tubes in the optimal break-over state with the output impedance as low as 0.1 ohm. When playing songs, blue LED dark blue stable light also reflects the stability of the system and sound quality. PCB wiring is strictly based on single point grounding, so that the current circuit of different paths will not interfere with each other. The amplifying circuit is made up of wafer resistors with high precision and thermal stability, and the circuit capacitance is made up of two 680pF WIMA thin film capacitors. Ensure excellent performance and sound quality transparency. The OP amplifier adopt TI original high-end audio op amp OPA627 in the circuit, left and right channel with one.


Output impedance: 0.1ohm

Match earphone impedance: 16-600ohm

Max output: 300mW at 32ohm

THD+N: 0.0003% at no-load

Channel isolation: 100dB

SNR: 126dB

Frequency response: 10-100kHz(-3dB)

Input: 1 line in(3.5mm analog audio input)

Output: 1 phone out(3.5mm analog audio output)

Rated power: 1W

Life time: 8 hours

Charging time: 2 hours

Battery capacity: 3.7V 2500mAh

Power supply: DC 5V/2A

Electrostatic protection: ±8kV(air discharge), ±4kV(contact discharge)

Operating temperature: 0°C-40°C/32°F-104°F

Storage temperature: -20°C-60°C/-4°F-104°F

Related humidity: 20-90%RH(No condensation)

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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: 10110
  • Brand: Dethonray
  • Product Code: HA-2
  • Availability: Out Of Stock
  • $199.00

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This product has a minimum quantity of 2