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Portable High Fidelity Stereo Audio Quality HIFI Headphone Amplifier
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Portable High Fidelity Stereo Audio Quality HIFI Headphone Amplifier

- Black
266248201

19
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    COD This product supports COD on delivery. Suggestions: Do not place orders with non-COD products, otherwise you will not be able to choose COD payment method.
    Ship between: Feb 27 - Feb 29, Estimated Shipping Time: business days Order Processing Time may require a few days. Once dispatched from warehouse, Shipping (or Delivery) Time depends on the Shipping Method.
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Descriptions

Portable High Fidelity Stereo Audio Quality HIFI Headphone Amplifier

1.Using this product can make the sound quality become much full and more stereoscopic,offering every user HiFi stereo auditory effect.

2.It is easy to operate,no need switch button,automatically detect the load startup,when there is the earphones of the output end inserted,it automatically turn on,if plugged out,it automatically turns off.

3.High-efficiency charging,generally speaking,charging 40 miniutes, HIFI will eork 5 hours,battery lift is up to 20hours.

4.The product is built-in protection function,when the voltage of the inner battrey is lower than 2.9V,it will automatically power off.

5.Circuit protection: battery protection, over-current protection, voltage protection, fast protection.

6.Low-distortion operational amplifier: No output capacitor, ground plane output, slow frequency, greater ripple. Internal impedance power design is low, making the sound more transparent, wider dynamic range or even better

7.Butterworth filter circuit: built-in Butterworth filter circuit, can compensate for the mobile music defects in the high frequency part of the dark and low frequency weaknesses, through the sound adjustment to reduce the sharpness and noise of mobile audio, improve audio quality.

Portable headphone amplifier is compatible with most headphones (best for impedance under 32 Ohms). It provides a powerful high-resolution audio experience through your headphones.
Specially designed for a wide array of digital devices such as cellphones, portable mp3 and iPod, which are naturally defective in low output impedance and low trust of audio output. With built-in USA high fidelity audio processing chip and patented audio processing technology, what you will hear is the highest quality music.

Features:
1.Positive and negative double power technology
Built-in single power supply circuit effectively suppress background noise, thus achieving a best stereo audio effect.

2.High frequency dynamic compensation tuning circuit network Built-in butter worth circuit design can make up these shortages of mobile phone music, such as the darkness of high frequency and weakness of low frequency.

3.Low distortion calculation amplifier
THD: THD+N is 0.006%
Free output capacitance,making the reference of ground level as the output design,the low frequency is surgent, the sound with the design of internal resistance power supply is much transparent and the dynamic range is better.Specifications

Please charge the product before using it! The charging color is red, and when the charging is full, the red light goes out.
If there is a situation where the use is not suitable or there is no amplified sound, please install the adapter and use it, thank you!

Package contents :
1 x Headphone Amplifier
1 x USB Charging Cable
1 x Headphone Adapter(3.5mm transfer 2.5mm)
1 x Headset Cable
1 x Conversion head
1 x English User Manual

Specification

General

Model: DS-ERF001
Material: ABS,Metal,Aluminium Alloy,Plasitc
Cable Length (cm): 20
Color: Black

Battery Information

Battery Capacity (mAh): 120mAh
Battery Quantity: 1
Battery lifetime (times): 2000000

Dimension and Weight

Product weight: 0.0350 kg
Package weight: 0.0570 kg
Product size (L x W x H): 5.50 x 2.20 x 1.10 cm / 2.17 x 0.87 x 0.43 inches
Package size (L x W x H): 9.20 x 6.30 x 2.80 cm / 3.62 x 2.48 x 1.1 inches

Package Contents

Package Contents: 1 x Headphone Amplifier, 1 x USB Charging Cable, 1 x Headphone Adapter(3.5mm transfer 2.5mm), 1 x Headset Cable, 1 x English User Manual

Portable High Fidelity Stereo Audio Quality HIFI Headphone Amplifier- Black

Portable High Fidelity Stereo Audio Quality HIFI Headphone Amplifier- Black

Portable High Fidelity Stereo Audio Quality HIFI Headphone Amplifier- Black

Portable High Fidelity Stereo Audio Quality HIFI Headphone Amplifier- Black

Portable High Fidelity Stereo Audio Quality HIFI Headphone Amplifier- Black

Portable High Fidelity Stereo Audio Quality HIFI Headphone Amplifier- Black

Portable High Fidelity Stereo Audio Quality HIFI Headphone Amplifier- Black

Portable High Fidelity Stereo Audio Quality HIFI Headphone Amplifier- Black

Portable High Fidelity Stereo Audio Quality HIFI Headphone Amplifier- Black

Portable High Fidelity Stereo Audio Quality HIFI Headphone Amplifier- Black

Portable High Fidelity Stereo Audio Quality HIFI Headphone Amplifier- Black

Portable High Fidelity Stereo Audio Quality HIFI Headphone Amplifier- Black

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Customer Reviews

4.5 out of 5
  • 1
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See all 2 reviews Write a Review
  • daniel
    Yes (1) Color: Black
    bien
    Este dispositivo es bastante util tiene un buen volumen y esta muy barato, muy buena opcion si no estas conforme con el volumen de tu telefono, ademas es muy pequeño y practico solo conectas y listo! , recomendado ampliamente.
    Suggestion
    ninguno

    Jun 16,2018

  • alan
    Yes (0) Color: Black
    amplified and clearer.
    I got this so my headphones would have more volume, and it doubled the volume while making the sound crisper. I was able to go into my VLC player and turn down the gain, as well as set the equalizer to a more neutral setting. I am delighted with this amplifier.

    Sep 17,2018

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Shipping

There are two key factors which will affect the time you receive your items.

1
Item processing time
After receiving your order,we require some time to test the product to ensure its quality.The exact processing time varies depending on the item.The average processing time is 3 working days.but this can also be affected by the item's stock status. For small quantity orders,the processing time is 1-3days while larger quantity orders may require 2-5days.
2
Shipping methods
China Warehouse:
Shipping Type Country or Region Arrive within 1-7 Days Arrive within 8-15 Days Arrive within 16-30 Days Arrive within 31-45 Days Average Time (Days)
Unregistered Air Mail or Registered Air Mail United States 0.52% 44.87% 49.88% 3.5% 18.13
Spain, United Kingdom, Italy, Germany, France & Portugal 5.18% 43.44% 48.34% 1.17% 15
Netherlands, Greece, Poland, Hungary, Slovakia, Czech Republic 2.96% 40.34% 52.54% 3.74% 18.66
Russia 0% 4.45% 84.41% 11.1% 28
Japan, Korea 0% 21.30% 68.80% 9.66% 17.75
Brazil 0% 0% 23.91% 72.09% 38.6
Turkey 0% 37.75% 59.05% 3.1% 20.33
Thailand, Singapore & Malaysia 0% 40.39% 56.12% 2.6% 16.2
Other countries 0.7% 38.79% 47.94% 8.56% 23.57
Priority Line United States 12.28% 79.05% 7.4% 0.52% 11.75
Spain, United Kingdom, Italy, Germany, France & Portugal 8.44% 66.56% 23.45% 0.45% 13.55
Russia 0% 3.48% 75.79% 20.04% 31
Brazil 2.21% 6% 61.29% 25.46% 30
Turkey 20.42% 77% 3% 0.08% 10
Australia 7.67% 86.60% 5.68% 0% 11
Korea 97.54% 1.57% 0.89% 0% 7
Japan 95.80% 2.09% 0% 0% 6.84
Thailand, Singapore & Malaysia 58.96% 41.04% 0% 0% 8.45
Other countries 22.33% 30.8% 27.62% 17.64% 18.65
Expedited Shipping ALL countries(EMS) 3.8% 46.8% 26% 15% 14.8
ALL countries(DHL) 65.8% 25.75% 3.86% 0.37% 6.72
GW Warehouse: Typically 3-5 days to the UK, 3-7 days to other European countries.
USA Warehouse: Generally, 3-7 days to a USA address.
ES Warehouse: Generally, 2-5 days to the Spain, 3-7 days to the Portugal.
Shipping from warehouse nearest to shipping address is faster. Additional charges may apply.
Note: This is a general guide and delays maybe caused force majeure, natural disasters, inclement weather, war, public holidays, and factors outside our control. Generally speaking, we offer free shipping for Portable High Fidelity Stereo Audio Quality HIFI Headphone Amplifier to United States (US, USA), United Kingdom (UK, GB), Germany, Italy, France, Spain, Portugal, Poland, Brazil, Russia, Japan, Greece, Austria, Hungary, Slovakia, Czech Republic, Ireland, Lithuania, Israel, Denmark, Norway, Sweden, Canada, Australia, Netherlands, Korea, Turkey, Mexico, Ukraine, Romania, Columbia, Thailand, Singapore, Malaysia etc. Please choose the shipping methods for the final price.

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