Good amplifiers are often expensive, and some people often joke that there is no good Hi-Fi below 10,000 yuan, which is prohibitive. However, with the continuous advancement of technology and the intensification of market competition, even the thousand-yuan level amplifier can now present a sound effect that exceeds expectations.Among them, the popular power amplifier of the domestic veteran Tianyi Audio - AD-86D, with excellent sound quality, rich functions have withstood the test of the market, and the ultra-high cost performance has made it quite famous in the circle of burning friends.
The cabinet of the AD-86D is made of high-quality aluminum alloy materials, which has been anodized with anodizing technology, and every detail is polished to a smooth and delicate level, and the joints are natural and smooth.
The exterior details are well handled, and the giant comb-shaped radiators on both sides are configured to ensure stable heat dissipation under high-power working conditions; The terminal blocks are made of 24K gold plating process, which can reduce the fretting corrosion of the metal contact surface, and the honeycomb anti-vibration feet are installed at the bottom to effectively avoid vibration during operation and make the signal transmission more stable.
Open the inside, you can see a neat and orderly five-box sealed structure, power supply, input, energy storage, left and right channels are strictly independent, do not interfere with each other, and the noise floor is extremely low.
The whole machine uses the high-resolution audiophile op amp OPA1678, the high-precision volume chip NJWVA audiophile ring cow, eight Toshiba TTC-5200 TTA1943, and six high-quality filter capacitors with a total capacity of up to 57400 microfarnes to ensure the purity and low noise of the sound.
AD-86D adopts super class A circuit design, integrated with experienced Hi-Fi processing, the pre-amp is a high-fidelity op amp, the post-amp is a typical differential amplification circuit and a mirror constant current source load, after several levels of current, voltage expansion and amplification and double Darlington power amplifier circuit amplification, it has the characteristics of "ultra-low distortion", and the efficiency is as efficient as the state of A and B, which can present a good sound with good hearing, good transient and strong sense of hierarchy, pure and natural, wide dynamic range and rich details.
The midrange of this machine is full and round, as smooth as silk; The low frequency is thick and powerful, as deep as the ocean, bringing a shocking sound experience; The high frequencies are delicate and transparent, as crisp as the early morning birdsong, showing a wealth of detail and color. In the state of class A and B, the output power of each channel is as high as 120W (8), which is full of power and can control a variety of ** styles, including pop, rock, classical, jazz, etc. Whether it's a tender lyric, a dynamic dance song, or a passionate rock music, the AD-86D can present excellent sound quality effects, allowing listeners to immerse themselves in the wonderful world.
In addition to excellent sound quality, the AD-86D also has a variety of audio source options such as optical, coaxial, PC, HDMI, Bluetooth, USB flash drive, TF card, etc., which can easily connect to mobile phones, tablets, computers and other devices.
It can also be controlled through the exclusive mobile phone APP, which is convenient for remote control, and the music source switching and song selection are clear at a glance, which is convenient for wireless ***
It also has a high and low pitch adjustment function, which can meet the personalized listening needs. If you want to experience more advanced gameplay, you can take and place the U-shaped ring on the back of the AD-86D in different ways, and switch to three forms: merged, pure preamp, and pure preamp, which can be used with other brands of pure amplifier or pure amplifier to enrich the gaming experience.
As a power amplifier of less than 10,000 yuan, AD-86D has become a dark horse in the market with its excellent sound quality and practical functions, bringing consumers a cost-effective choice. If you're looking for a high-quality amplifier, consider the AD-86D, which is sure to surprise you.