Amplifier 擴音機 / TEAC / AI-501DA
AI-501DA

Integrated Amplifier with USB Streaming

Introduction

The AI-501DA integrated power amplifier with 192kHz USB digital audio inputs and low power consumption is the powerhouse of TEAC's new 501 series. Hosting a BurrBrown PCM5102 D/A Converter, USB connectivity, Class-D ABLETEC Norway amplifier and a toroidal-core power transformer makes the AI-501DA a key component for the 501 series or any other 2-channel audio system.

Specification

Integrated Class-D Amplifier by ABLETEC, Norway: Achieves High-Quality Sound, High Output Power, and Low Power Consumption.
After months of technical reseach for an amp with high-quality sound and high output power, but low power consumption, the ALC0180 Digital Power Amplifier module, manufactured by ABLETEC, Norway, was decided on to compliment the AI-501DA. Delivering a maximum of 90W + 90W of output power at a maximum 55W of power consumption, users are able to enjoy powerful sound without hesitation. Furthermore this next generation integrated amplifier consumes only 10W in idling mode, and 0.2W at power-saving standby mode.

Fully Digital Path via USB Cable allows 192kHz High-Res Audio Playback
Just connecting a USB cable between any Mac/Windows-PC and the AI-501DA, a variety of audio formats can be transferred in a fully digital manner. Once the driver software is installed, your playlist iTunes or Windows Media Player turns into part of your high-quality audio system. This allows 24bit/192kHz data transfer mode reduces jitter noise while the digital data travels along the USB cable.

BurrBrown PCM5102 D/A Converter for a Variety of Digital Sources
The AI-501DA employs the highly celebrated BurrBrown PCM5102, allowing 32bit processing across the USB audio input, Optical and Coaxial digital inputs. Parts were carefully selected for the analog circuits. The unit utilizes high-quality operational-amplifiers and electrolytic capacitors already proven on previous hig-end models.

Large Capacity Toroidal-Core Power Transformer
An over-sized Troidal-core power transformer helps deliver high-quality sound without sacrificing energy-efficiency and the unit's compact dimentions.
Conventional diodes produce rectification noise that negatively affects the sound of other units. To combat this, TEAC installed Schottky Barrier Diodes to supply a cleaner internal current and reduce rectification noise.

High-Quality Headphone Output Processed by an Exclusive Operational Amplifier on Each Channel
The AI-501DA is also designed for headphone listening, as well as speaker listening. An exclusive operational amplifier is employed on each channel. Conventional hi-fi systems only use a single operational amplifier for both channels.

No Cooling-Fan, for Quiet Operation
Effort to eliminate the signal to noise ratio and ensure high-quality audio playback mean nothing with a noisy cooling fan. To reach both goals of attaining high performance and compact dimentions, TEAC carefully arranged the inner-workings to eliminate the need of a fan. There are two parameters that conflict with efficient heat dissipation, the circuit design and chassis design. After careful strategy, effective placement of potential heat-generating components allows this high-performance compact amplifier to operate without a cooling fan.