With the progress of science and technology, the development of the times, the living standard of the public has gradually improved, and the demand for improving the quality of entertainment products has gradually manifested. In terms of vision, almost all TV products have gradually evolved from 720P, 1080P to 2K, 4K or even 8K, and mobile phone screens have also achieved the mainstream 1080P, gradually evolving to higher resolution. In terms of hearing, only some products of some brands have achieved HIFI quality, and there is no new development and breakthrough in the quality of audio in most mobile products. Of course, there are many reasons, including market, cost and technology. However, how to enable the public to enjoy higher quality audio services in existing products is a promising idea. The engineers of Buyu Laisheng Technology Co., Ltd. brought a high-quality product to this idea - the Laisheng GR-1 portable headphone amplifier.

Today, the product we are trying out is this headphone amplifier. First, let's take a look at the product packaging.

The packaging box of the product is white paper hard shell, which is between the size of the packaging box of Xiaomi Max and that of iPad air, and the thickness is about the same.

The measuring surface of the packaging box is printed with the slogan of "Extremely listening to the sound of eternal solicitation".

Open the box, the top of the box cover is protected by a sponge, and the box body is covered with a black card.

Take away the card to see the product.

There is an earphone body, a metal LOGO and an audio cable.

The audio cable is made of very thick materials and has a strong feel. Both ends are 3.5mm headphone connectors.

The metal LOGO has a good texture and is very thick. It is heavy in the hand. There is glue on the back, which can be directly pasted to other equipment.

Take out the sponge pad, and there is another layer under it. The USB charging cable, a black envelope, and a bandage are placed respectively,

The strap should be able to bind the earphone and the playback device together for easy carrying.

The USB charging cable is a standard MicroUSB interface. The cable is relatively short, but the material is good.

Open the black envelope. Inside is a letter from Buyu Laisheng Company to the user, as well as the instructions of the headphone amplifier.

The instruction adopts a cascade ladder design, which is very characteristic.

Well, let's focus on the main body of the ear amplifier.

The shell of the ear amplifier is made of zinc alloy by melting and casting, and the surface is made of metal wire drawing technology, which gives a sense of design and industry. The shell adopts a two-layer split design and is fixed with four screws.

The bottom of the earphone is a USB charging interface, which uses MicroUSB. There is an indicator next to the charging port. Red indicates charging, and green indicates charging is complete.

The top of the earphone is the volume adjustment knob, audio input port, power switch, power indicator, and audio output port.

Another family photo.

Next, let's try the power of ear amplifiers.

First, connect the iPod and headset, use the iPad shuffle as the audio source, and use the original iPad headset as the output.

Turn on the power switch, and the indicator lights up.

Adjust the volume knob to the appropriate position, and come down to enjoy the wonderful music.

Connected to the iPad through the Leisheng GR-1 portable headphone amplifier, ipod， Multiple playback devices such as Xiaomi MAX mobile phone have found that the ear amplifier can enhance the sound on different devices, which is mainly reflected in the obvious volume amplification effect, the obvious enhancement effect on middle and low tones, and the more layered music. Previously, when using ipod and other devices to directly push the active speakers and high-power headphones, the thrust was obviously insufficient. After using this earphone, the improvement effect was obvious, and the bass effect could also be achieved.

There are also some shortcomings. As a mobile device, using such a thick metal body, its weight is much heavier than the mobile phone, and its portability is slightly insufficient. The fineness of the abrasives at the junction between the body and the rear cover needs to be improved. There are obvious gaps in some places, even some cutting hands. However, the flaws do not hide the merits. In general, the Laisheng GR-1 portable headphone amplifier is a good product, allowing us to experience the high-quality audio service similar to that provided by HIFI devices on existing non HIFI devices. We hope the engineers of Laisheng Technology will continue to work hard to provide better products in the future product evolution.

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