TEAC_UD-503_preview1UD-503 TEAC

UD-503 D/A Converter Headphone Amplifier

A few months after the launch of UD-301 Japanese firm presents the successor to the famous DAC headphone amplifier UD-501 Teac UD-503.

In terms of design the Teac UD-503 maintains a substantially similar to its predecessor base, the front still has the front handles. For this new model, the Japanese manufacturer is leaving Texas Instruments chips for double AKM AK4490 DAC also includes two separate treatment of 44.1 kHz and 48 kHz clocks. An input terminal for an external clock (10 MHz) is also available. The headphone amplifier section is controlled by a discrete class AB amplifier.

The set is powered by two rings of transformers (one per channel). In terms of functionality, Teac provides a function of exceeding 384 kHz PCM stream for sampling, which can be converted into DSD DSD 11.2 MHz and 12.2 MHz.


The DAC also offers four types of filters PCM, and two DSD digital filters. Finally, it notes that it will also be possible to use the UD-503 as a preamp RCA asymmetrical or symmetrical XLR, with an adjustable volume directly from the front panel potentiometer.

Finally only connectivity, Teac UD-503 offers an XLR output, analog input / output RCA, USB-B input, an optical input, one coaxial input, dual output Jack 6.35 mm, and a clock input synchronization. A remote control is supplied with the device. The launch of Teac UD-503 is scheduled for the summer of 2015 in Japan,.


Teac UD-503 features:

• Dual-mono topology
• Double toroidal transformer
• Double AKM AK4490 DAC Asahi Kasei
• Master Clock 44.1 and 48 kHz
• Volume control circuit VSQC
• DSD and PCM decoding
• upsampling to 384 kHz / 24-bit DSD and 11.2 / 12.2 MHz
• Digital filters
• Connections: XLR, RCA, USB-B, 6.3 mm Jack x2, clock synchronization
• Remote Control