High-performance VERITA AK4497 DACs supporting DSD512 and PCM32/768
The NT-505 employs the latest VERITA AK4497 (developed by Asahi Kasei Microdevices) on each of the left and right channels.
It is a highly-regarded high-end audio DAC, and supports DSD512 (22.5MHz) and 768kHz/32-bit PCM formats, achieving industry-leading ultra low distortion levels. OSRD (Over-sampling Ratio Doubler) technology, meanwhile, significantly reduces out-of-band noise.
As a result, the NT-505 has the refinement necessary to make the most of Hi-Res formats, successfully processing information that lies outside the audible range.
Dual monaural circuit design and fully-balanced design
Supports Spotify, TIDAL Qobuz music subscription services, and is Roon Ready
Connecting to your home network via a LAN cable, the NT-505 allows you to access Hi-Res music libraries on available music servers and computers, as well as hundreds of millions of CD-quality tracks on Internet via music subscription services like TIDAL and Qobuz, in addition to free music subscription service Spotify that delivers over 50 millions music from the world.
The NT-505 is also a Roon Ready product that enables Hi-Res audio streaming thanks to its high-performance D/A converters.
MQA decoder for master quality streaming
High-quality wireless audio streaming via Bluetooth®
Hi-Res audio playback from USB flash drive
Dual onboard clocks for 44.1k and 48kHz, and an external clock input
Up-conversion up to 384kHz/32-bit PCM and 24.5MHz DSD
"Bulk Pet" USB transfer technology for enhanced audio quality
PCM digital filters
Sharp Roll Off FIR filter with a steep roll-off that sharply cuts signals outside the audio band
Slow Roll Off FIR filter with a slow roll-off that gently cuts signals outside the audio band
Short Delay Sharp Short delay filter with a steep roll-off that sharply cuts signals outside the audio band
Short Delay Slow Short delay filter with a slow roll-off that gently cuts signals outside the audio band
Low Dispersion Short delay filter with low dispersion that cuts signals outside the audio band
* When receiving signals at 352.8 kHz, 384 kHz or higher, the digital filter will be disabled during processing regardless of the above setting.
DSD digital filter
Narrow Cut-off frequency of 39kHz (at 2.8M), 78kHz (at 5.6M), 156kHz (at 11.2M) or 312kHz (at 22.5M)
Wide Cut-off frequency of 76kHz (at 2.8M), 152kHz (at 5.6M), 304kHz (at 11.2M) or 608kHz (at 22.5M)
Isolated digital and Analog sections
Dual high-capacity toroidal-core power transformers
Unique TEAC-HCLD output buffer amp circuits
TEAC-QVCS high-precision volume control with four circuits
Ground-separate headphone drive mode
Full-metal body for functionality and beauty
Full-dot OLED display with excellent visibility
Symmetrically laid out XLR and RCA output jacks
Free TEAC HR Audio Player software for DSD512 playback on both Windows and Mac
Free TEAC HR Streamer app for iOS/Android devices
Supported formats
USB input
PCM 16/24/32 bit
44.1k/48k/88.2k/96k/176.4k/192k/352.8k/384k/705.6k/768k Hz
DSD 2.8M/5.6M/11.2M/22.5M Hz
Coaxial digital input
PCM 16/24 bit
32k/44.1k/48k/88.2k/96k/176.4k/192k Hz
DSD 2.8MHz(supported with 176.4kHz/24-bit DoP format)
Optical digital input
PCM 16/24 bit
32k/44.1k/48k/88.2k/96k/176.4k/192k Hz
DSD 2.8MHz(supported with 176.4kHz/24-bit DoP format)
DAC section
USB DAC Asahi Kasei Microdevices AK4497×2
Up-conversion up to 384kHz/32-bit PCM, 22.5MHz DSD
Digital filters
PCM filters Sharp Roll Off, Slow Roll Off, Short Delay Sharp, Short Delay Slow, Low Dispersion, off
DSD cutoff frequencies Narrow : 39kHz (at 2.8M), 78kHz (at 5.6M), 156kHz (at 11.2M) or 312kHz (at 22.5M)
Wide : 76kHz (at 2.8M), 152kHz (at 5.6M), 304kHz (at 11.2M) or 608kHz (at 22.5M)
LAN section
Connector RJ-45×1(1000Base-T)
MQA Decoder Built-in
Audio inputs
USB (rear) USB B port, USB 2.0, asynchronous mode transfer, bulk transfer
Compatible Software TEAC HR Audio Player (Windows, Macintosh)
COAXIAL digital (rear) RCA pin×1 (gold-plated)
Input level 0.5Vp-p
Input impedance 75Ω
Optical digital (rear) TOS-link×1
Input level -24.0 to -14.5dBm peak
Coaxial digital (front) 1/8” (3.5mm) mini×1 (combined with optical digital input, detected automatically)
Input level 0.5Vp-p
Input impedance 75Ω
* 1/8” Mini - RCA conversion cable included.
Optical digital (front) 1/8” Mini Optical×1 (combined with coaxial digital input, detected automatically)
Input level -24.0 to -14.5dBm peak
USB (front) USB A port
Supported media USB Flash Drive
Bluetooth®
Bluetooth® version 4.0
Output class Class2 (Range: approx. 33ft/10m)
Supported profiles A2DP, AVRCP
Content protection SCMS-T
Supported codec LDAC™, Qualcomm® aptX™ HD, aptX™, AAC, SBC
No. of paired device maximum 8 devices
Audio outputs
XLR balanced XLR×1 pair (gold-plated)
Output level Fixed (0dB), fixed (+6dB), variable, output off (selectable)
Maximum output leve 2.0Vrms (1kHz, full scale, into 10kΩ, when set to fixed (0dB))
4.0Vrms (1kHz, full scale, into 10kΩ, when set to fixed (+6dB))
12.0Vrms (1kHz, full scale, into 10kΩ, when set to variable)
Output impedance 188Ω
RCA unbalanced RCA pin×1 pair (gold-plated)
Output level Fixed (0dB), fixed (+6dB), variable, output off (selectable)
Maximum output leve 2.0Vrms (1kHz, full scale, into 10kΩ, when set to fixed (0dB))
4.0Vrms (1kHz, full scale, into 10kΩ, when set to fixed (+6dB))
6.0Vrms (1kHz, full scale, into 10kΩ, when set to variable)
Output impedance 150Ω
Headphone outputs
Connector 1/8” (3.5mm) Stereo TRS(or TRRS) jack×1 (gold-plated)
Polarity Tip:L+, Ring1:R+, Ring3:L-, Sleeve:R-
Maximum output 500mW + 500mW (into 32Ω)
Supported impedances 16 to 600Ω
Clock section
Internal clock
Type Crystal oscillator
Number of clocks 2 (44.1kHz and 48kHz)
External clock input
Connector BNC (gold-plated)
Input frequency 10MHz
Input impedance 50Ω
Input level Rectangle wave: equivalent to TTL levels
Sine wave: 0.5 to 1.0 Vrms
Audio performance
Frequency Response 10 to 80,000 Hz (+1/-3 dB, 192kHz PCM input, RCA output, digital filter off)
Total harmonic distortion 0.002% or less (192kHz PCM input, RCA output, digital filter off)
S/N ratio 110dB or higher (192kHz PCM input, RCA output, digital filter off)
Power supply
US/Canada AC 120V 60Hz
UK/Europe AC 220 to 240V 50Hz
Power consumption 18W (0.4W in standby)
dimensions (including protrusions) 290(W)×81.2(H)×248.7(D) mm / 11.4”(W)×3.2”(H)×9.8”(D)
Weight 3.9kg / 8.6lbs
Included accessories Power cord, RCA mini plug adapter cable, remote control (RC-1330),2 AAA batteries for remote control, Owner's Manual
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