FiiO A1 Digital Desktop Audio Amplifier

Fiio A1

The FiiO A1 is an advanced compact desktop stereo amplifier designed to provide high fidelity amplification for playback on small bookshelf speakers or unpowered monitors. It combines both a preamp and power amp in the same chassis, able to take input directly from a line-level source.

The Fiio A1 can use either a 3.5mm or RCA input and has a high performance TI OPA2134 audio operational amplifier for preamp circuitry with low noise, low distortion and high conversion rate. Each of the two sound channels use a different carrier frequency (550KHz / 600KHz) to achieve high fidelity conversion and minimized mutual interference. The Differential input level of FiiO's A1 combined with adjustable negative feedback circuit ensures low noise, low interference and low distortion.

Summary

The Fiio A1 is a high effciency Class D Headphone amp that can be used as a pre amp and power amplifier. The A1 is small and it sits on your desk giving your bookshelf speakers that extra ooomph..

Features

• 14W x 2 Output Power
• Adopt two forms of circuit, preamp and power amplifier.
• Adopt TI company's high performance audio operational amplifier OPA2134 signal process as preamp; With low noise, low distortion and high conversion rate.
• Adopt NXP high efficiency Class D amplifier TFA9815T as power amplifier; BTL output to make low voltage and large current.
• Designed with two sound channels with different carrier (550KHz / 600KHz), realize hi-fi conversion and at the same time avoid mutual interference.
• "0" dead zone design and its perfect protection function: overheating, over-current, over-voltage, undervoltage, with own detection protection when boot up.
• Differential input level and combined with adjustable negative feedback circuit, ensure low noise and low interference and low distortion
• On/off mute function
• Use closed APLS potentiometer, ensure low noise and good channel balance
• RCA and 3.5mm two audio input, for convenient to connect.
  (3.5mm audio input in the first priority, the RCA will be off when insert the audio input.)
• Minimum output 4 ohm adaptive impedance.
• Combined with Banana plug/terminal output interface, convenient to connect with speakers.