Dongle AK4377 Chip Portable Headphone Amplifier DAC

    AKM AK4377 Chipset
    Applicable to Android 5.1 or Higher Version And Lightning Connector
    High-end 4-pin 36-core OCC cable
    Battery-Free Design, Plug And Play
Regular price €35,00
Sale price €35,00 Regular price

AKM AK4377 Chipset

7HZ SEVENHERTZ 71 adopts AKM's AK4377 chip to process digital signals. It is smaller than other chips and uses 36-pin CSP packaging, which requires less space on the circuit board. The upgrade AK4377 chip can analyze each format audio signal. For better sound quality, a 32-bit digital filter is integrated into the circuit, allowing a lower distortion rate and a wider sound field.

Applicable to Android 5.1 or Higher Version And Lightning Connector

The 7HZ SEVENHERTZ 71 Portable Headphone Amplifier is small but powerful. It can effectively improve the sound quality representation of devices such as mobile phones, music players, etc. SEVENHERTZ 71 is mainly applied to mobile phones and it is suitable for Android 5.1 and above. Besides, SEVENHERTZ 71 can compatible with Apple Lightning connection.

High-end 4-pin 36-core OCC cable

As a portable headphone amplifier, the 7HZ SEVENHERTZ71 not only adopts an upgraded DAC chip but was also designed with high-end cables. 7HZ SEVENHERTZ 71 cables use four 36-core OCC cables, which can transmit digital and analog signals losslessly. The cables are hand-woven and extremely robust, enhancing the resistance to breakage.

Battery-Free Design, Plug And Play

The 7HZ SEVENHERTZ 71 Potable Headphone Amplifier used a battery-free design. The AK4377 chip is easy to drive and the impedance of the circuitry in this amplifier is also low, meaning that not much power is required. This means that this potable amplifier can be driven with low power. The battery-free design means that there is no need to worry about running out of power during use. You can use this Potable Amplifier anytime, anywhere.

Inside the Box

  • 1 x 7HZ SEVENHERTZ 71
  • User Manual

1 Year Warranty

The 7HZ SEVENHERTZ 71 Comes with a 1 year warranty on the AMP & DAC only. Warranty doesn't apply to the included accessories.

Technical Details

Model Name
DAC Chip
-108dB/0.0004%@32 ohms
Output Power
70 mW@32 ohms
Output Voltage
1 Virms@32 ohms
106 dB
Frequency Range
20 Hz-40 kHz
<0.9 μV
PCM Decoding
32bit/384KHz Maximum
DSD64; DSD128 (DOP)

Authentic Products

Linsoul Audio is the authorized distributor. All products are authentic and genuine.

Worldwide Free Shipping

We are located in China but send our products worldwide for free. T&Cs apply.

1 Year Warranty

We provide 1 year warranty for the all products except the cables and accessories*.

Online Support

Need help?, we are here to assist you
Monday - Friday: 09:00 – 18:00 (UTC+8)

Customer Reviews

Based on 6 reviews
Zed Deaf

good stuff for a few bucks

Miguel Hilario
Liquid smooth and detailed

Exceeded my expectations. Gets a little warm but does not drain my phone batt quickly. Nice and light too. Effortlessly drives my favorite modded Koss KSC75 headphones.

Azrin Omar
7hz 71

Evelate the sound of my earphones...


It somewhat lifeless in compare to my BTR3 or even off brand dongle, that was way smaller and cheaper then this. It's not bad, but I was hoping for more.

7Hz 71

Very happy with this product. Very well made, works properly, good value.

Works seamlessly across my devices.

Used on my laptop and multiple android devices. Has warm sound signature. Overall, not to shabby for the price.

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30-Day Return Policy

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