The UD-505-X 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. The dual mono structure processes stereo signals with higher purity, and the D/A converter section
uses one ESS Technology ES9038Q2M in each of the left and right channels. This model achieves a high
signal-to-noise ratio by using each DAC in mono mode.

Features at a glance
• Hi-Res audio playback supporting DSD512 (22.5MHz) and PCM 768kHz/32bit PCM
• An ESS Technology ES9038Q2M converter each for left and right channels
• Dual on-board clocks for 44.1kHz and 48kHz frequencies
• 7 types of PCM digital filters
• Up-conversion up to 24.5MHz DSD and 384kHz/32bit PCM
• 10MHz external clock input
• Bluetooth® receiver supporting LDAC™, Qualcomm® aptX™ HD, AAC and SBC
• Original TEAC-HCLD2 enhanced-current output buffer circuit
• Dual monaural circuit design
• Dual toroidal-core power transformers for each channel
• TEAC-QVCS quad volume control system
• 4.4mm 5-polar Pentaconn*1 jack and dual 1/4” (6.3mm) TRS jacks for balanced and active-ground drives
• Full-dot OLED display with dimmer function
• Newly-developed “Stressless Foot” design with three support points
• Semi-floating design Top Panel
• Bulk Pet*2 USB transferring technology with four transfer modes for various sound characters