TEAC AI-303 USB DAC

This desktop audio amplifier accommodates a compact amplifier module with Bluetooth® receiver and USB audio input to playback Hi-Res sound source.
Only 215mm in width, ideal for high quality sound playback on TVs and notebook PCs

Connecting from TV with a single HDMI cable
The only connection between the AI-303 and a TV is an HDMI cable. Supporting ARC/eARC and HDMI CEC, volume control and power on/off of the AI-303 can be controlled from a TV remote, while receiving PCM 192/24 Hi-Res audio as long as the TV supports the resolution. Thanks to its small footprint, installing the AI-303 on a TV cabinet is possible.
* Please set the digital output to "PCM" in the output settings of the TV.

Supporting DSD512 and PCM 384/32 Hi-Res audio formats
In order to maximize studio master quality sound quality of the digital source, the D/A converter on the AI-303 equips two types of digital filters and x2Fs, x4Fs, and x8Fs up-conversion processing to pursue your preferred sound.


Wide range of digital inputs, HDMI, USB-C, Coaxial, and Optical
Connections with the digital sources are up-to-dated. The AI-303 equips an HDMI for TV, a USB-C for PC/Laptop and Coaxial/Optical for conventional digital music players, maximizing potential of each digital source with the high performance D/A converter.


Built-in Bluetooth® receiver supporting LDAC®, and Qualcomm® aptX™ HD
The Bluetooth® receiver is employed for easy wireless connection with a smartphone, supporting high-resolution wireless codecs including LDAC®, LHDC, and Qualcomm® aptX™ HD, in addition to other standard Bluetooth® codecs such as Qualcomm® aptX™, AAC, and SBC. The LEDs on the front panel indicate which codec is engaged when connection is established.

USB-C for versatile USB connection with PC, Smartphone and Tablet
The AI-303 also supports wide variety of digital devices such as smartphone/tablet and portable digital audio player that support USB Audio 2.0, via a self-powered USB-C port allowing auto device detect when the device equips a USB-C. Most Android devices and recent iPad Air/iPad Pro that equip USB-C port allow single USB-C cable connection without extra devices.
*1 An additional USB Camera Adapter from Apple is required when connecting to an iPhone.
*2 When connecting to an Android device, "OTG Connection" must be turned on or "USB Debug" must be turned on from the developer option menu.

High performance Ncore® power amplifier from Hypex
The compact AI-303 accommodates a high energy efficient and high performance Ncore® power amplifier designed by Hypex, borrowed from upper model, delivering clear and crisp sound with rich musicality.

4-pole Headphone output with Ground-separate
The headphone amplifier circuit is designed as separated ground on both Left and Right channels from the pre-amplilfier section to headphone jack which is 4-pole type. By separating the both grounds, the channel separation is significantly improved while realizing clear sound stage.
*1 Ground-separate connection is available with Headphones with a 4-pole plug.
*2 Headphones with a conventional 3-pole plug is also compatible.
*3 Pin assignment of the 4-pole jack: Tip: L+, Ring: R+, Ring: L–, Sleeve: R

Coupling Capacitor Less Circuit headphone amplifier
The headphone amplifier employs the Coupling Capacitor Less Circuit (CCLC) design, which eliminates these negative effects caused by capacitors and provides a high-dimensional headphone listening environment with sufficient low-frequency range and good response, while conventional headphone amplifier design that employs output stage coupling (or removal of DC signal) inevitably affects the sound due to capacitors, such as sound changes, phase delays, and low-frequency level drops.


More natural headphone listening with Crossfeed
The Crossfeed function provides natural sense of sound source deployment on Headphone listening, while emphasizing presence of the center source to improve lack of center sound and clarifies human voice range such vocal, narration and dialogues. The Crossfeed effect is adjustable with the CROSSFEED knob on the front panel.

 
MQA full decoding
The AI-303 supports MQA full decoding to enjoy studio master quality sound, from any digital inputs USB-C, HDMI, Coaxial and Optical inputs from MQA streaming and MQA CD from CD player via digital connection.

Features at a glance
Connecting from TV with a single HDMI cable
Supporting DSD512 and PCM 384/32 Hi-Res audio formats
Wide range of digital inputs, HDMI, USB-C, Coaxial, and Optical
USB-C for versatile USB connection with PC, Smartphone and Tablet
Built-in Bluetooth® receiver supporting LDAC, and Qualcomm® aptX™ HD
USB-C for versatile USB connection with PC, Smartphone and Tablet
A two pairs of audio inputs for flexibility
High performance Ncore® power amplifier from Hypex
4-pole Headphone output with Ground-separate
Coupling Capacitor Less Circuit headphone amplifier
More natural headphone listening with Crossfeed
MQA full decoding
Various DAC modes with SoC
High-quality analog volume with ladder type attenuator
Asynchronous mode to eliminate USB transmission jitter
“Bulk Pet” digital audio transmission
Three-point support stress-less feet
Bluetooth® multipoint connection for two
Subwoofer Preout
Full metal cabinet design