A935 Portable Headphone Amplifier Stereo Speaker Headphone Amplifier, Support Power Bank, A935

Product information
1. Prefer sound quality, seek playback, multi-operational serial boost, A935 selects two sets of operational amplifiers (OPA2604AP + OPA2107) featuring good sound quality and big boost provided by the famous American BB, with superb effect, small size distinct double The engineer's carefully designed power boost circuit improves the transparency of OPA2604 to the highest degree of amplification effect. Power is the key to producing good sound from the portable headphone amplifier, and A933 power supply adopts the complex and expensive dual power supply design. Among the many single-power headphone amplifiers on the market, A933 high-quality high-current positive-negative power supply is absolutely considered the leading grade. Through partitioning, the headphone amplification is kept away from the power supply to solve the possible electromagnetic interference caused by the power boost. The ultra-small audio filter capacitor array + LC type filter circuit minimizes system ripple, providing clean and high transient power to the headphone amplifier circuit. As the headphone amplifier with the strongest sound quality, A935 features high SNR, delicate and transparent sound quality and great drive. Headphone fans often experience that although headphones are the closest hearing device to the human ear, even the distance from ordinary in-ear earphones to the eardrum is only 1-2cm, in most cases the sound is muddy, because if the glass can not be cleaned properly, it seems a little unclear, A933 will free you from this worry.
2. This product uses quadruplex potentiometer to adjust the volume, the power switch is provided by Japan ALPS, the power relay is provided by Japan NEC to provide double protection on the output circuit, prevent impact noise and protect the headphones. Its power supply is added with the unique charging function, which can charge other smart devices and output 1A current.
3. About burn-in: Our intended design effect is only achieved after burning the product for some time. For headphones and speakers: need to burn-in for 96 hours; for amplifier and other devices: need to burn-in for 24 hours, burn-in mode: select continuous burn-in or cumulative regular use.

Advantages
1. Improved sound quality: Maximum sound quality, let time experience everything, make the sound transparent, awaken musical inspiration, the new design concept, more than imagination, three-partition isolation circuit, main power supply, two sets of operational amplifiers (OPA2604AP + OPA2107AP) provided by US Famous BB, it is felt that the treble / bass significantly increases one level after the multi-operational serial connection to the product, which benefits from the internal high voltage of +/- 7.5V to greatly improve the thrust.
2. Detail reproduction: The product can capture more details which are not the extra addition to the product but the existing ones, because the non-professional headphone amplifier often have such details.
3. Increased sound field: Anyone who does not use a good headphone amplifier may never understand the sound field better, it is a sense of presence, the sense of scene heard by a transductive headphone is different from that added to the product, it is It is worth noting that a good headphone amplifier deserves a good earphone.
4. Cell phone backup power: The unique product design (cell phone charging) can be used as a backup power.