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UD-505

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USB DAC/Headphone Amplifier

Dual monaural USB DAC/headphone amplifier supporting DSD512 and PCM32/768

The UD-505 is a flagship dual monaural USB DAC with an integrated fully-balanced headphone amplifier, that fuses high-end audio design concepts and TEAC’s decades of audio design experience, in an A4-sized footprint.

Like its predecessor models, the UD-501 and UD-503, it employs a dual monaural circuit design to process audio signals with even greater purity, with the latest VERITA AK4497 DAC chip used on each of the  two channels. This improves the S/N (signal to noise) ratio by processing each channel individually in monaural mode, as well as delivering DSD512 (22.5MHz) native and 768kHz/32-bit PCM playback capabilities. 

The analogue section, which is one of the keys to sound quality, includes four TEAC-HCLD buffer amp circuits process different drive modes, – fully-balanced drive for balanced output, and parallel drive mode for unbalance output, – to achieve enhanced acoustic expressive.

The headphone section is remarkable. A totally new 4.4mm headphone jack, called Pentaconn, is employed, allowing balanced and active ground connections within a single jack, while conventional 1/4” phone jacks are also provided. In addition to a wide range of digital and analogue inputs, a Bluetooth® receiver supporting LDAC™ and Qualcomm® aptX HD™ allows you to enjoy high-quality wireless audio streaming from your smartphone on this flagship USB DAC.

The UD-505 is a compact and high-spec USB DAC and headphone amplifier that supports today’s high sampling rate Hi-Res formats.

Main functions

  • Hi-Res audio playback supporting DSD512 (22.6MHz) and PCM 768kHz/32-bit PCM
  • Dual monaural circuit design with a high-end AKM VERITA AK4497 DAC on each channel
  • 5 types of PCM digital filters and 2 types of DSD digital filters
  • Up-conversion up to 24.5MHz DSD and 384kHz/32-bit PCM
  • Dual on-board clocks for 44.1kHz and 48kHz frequencies, and 10MHz external clock input
  • Bluetooth? receiver supporting LDAC? and Qualcomm? aptX? HD
  • TEAC-HCLD output buffer circuit and TEAC-QVCS volume control for high quality sound
  • 4.4mm 5-polar Pentaconn jack and dual 1/4" TRS jacks for balanced and active-ground drives *1
  • TEAC's patent registered pin-point feet in three positions for the perfect installation *2
  • "Bulk Pet" USB transfer technology, with four transfer modes to vary sound character *3
  • Free TEAC HR Audio Player for DSD512 and PCM32/768 playback

*1 "Pentaconn" is a registered trademark of NIPPON DICS Co., Ltd., conforms to the RC-8141C JEITA standard
*2 Japan patent No. 4075477 and No. 3778108
*3 "Bulk Pet" is a registered trademark of Interface Corporation.

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