TEAC
USB-DAC/Network Player (Black)
TEAC
UD-701N-B
Scheduled for release on May 29, 2021
Manufacturer's warranty period: 1 year
The TEAC UD-701N is an all-rounder that can flexibly adapt to new listening styles in a new era.
Newly developed TEAC Delta-Sigma discrete DAC
The new TEAC Delta-Sigma discrete DAC does not use a general-purpose DAC IC, but uses a discrete circuit with an FPGA that incorporates a unique algorithm.
DSD is retained, while PCM is converted to a 1-bit signal through a ΔΣ modulator and then output as a high-quality analog signal.
The vast and clear sound field expression that can only be achieved with a discrete DAC is the ultimate in sound that TEAC has been seeking.
The TEAC ΔΣ discrete DAC is capable of reproducing DSD 22.5MHz and PCM 384kHz/32bit.
Dual Monaural Configuration
A luxurious dual monaural configuration has been adopted, from the power supply circuit with a toroidal-core transformer mounted independently on the left and right sides, to the D/A converter section and analog output stage.
The dual monaural configuration, with two complete monaural circuits for each channel, prevents interference from L/R signals and realizes rich musical expression such as a sense of sound field and three-dimensionality.
Fully balanced transmission in all stages
Full-balanced transmission of the L/R analog output signals from the D/A conversion to the final output stage greatly contributes to the improvement of S/N and the expansion of dynamic range.
This contributes greatly to improving S/N and expanding dynamic range, and conveys the full atmosphere of high-resolution sound sources in a more pure state.
Four large-capacity toroidal-core transformers
In addition to two independent toroidal-core transformers for analog signals on the left and right sides, independent toroidal-core transformers are provided for the network module section and digital control section.
In addition to the two toroidal-core transformers independently mounted on the left and right sides for signals, independent toroidal-core transformers are provided for the network module section and digital control section. In particular, the power supply for the network module section is reinforced with a linear power supply to provide stable power to the network module, which requires advanced processing.
Analog preamplifier function with four digital inputs and two line inputs (RCA/XLR)
In addition to its functions as a USB DAC and network player, it is equipped with two digital inputs each for coaxial and optical digital, as well as RCA and XLR analog inputs, allowing it to be used as a high quality analog preamplifier in combination with external devices.
The TEAC-QVCS (Quad Volume Control System), which uses a variable gain amplifier type volume with four independent circuits for left and right, positive and negative (L+, L-, R+, R-), is placed on the audio signal path to minimize the signal path and prevent degradation of the audio signal due to the routing of signal lines.
The Quad Volume Control System (QVC) is placed on the audio signal path to minimize the signal path and prevent audio signal degradation due to signal line routing.
The TEAC-HCLD 2 circuit is a brushed-up output buffer amplifier with enhanced current transmission.
The TEAC-HCLD 2 circuit is a further improved version of the TEAC-HCLD (HCLD: High Current Line Driver) circuit, which enhances the current transmission capability that is important for analog output circuits.
The diamond buffer amplifier, which has a high current-carrying capacity, is configured as a line driver with two positive and two negative circuits per channel, driven differentially for balanced output and in parallel for unbalanced output.
By increasing the current supply capacity, the dynamism of the music signal can be conveyed in its entirety.
Headphone amplifier with 4-pin XLR with switchable balanced/active ground
A dedicated headphone amplifier with four diamond buffers, one for each positive and negative sides, enables the connection of balanced headphones.
In addition, even when used in single-ended mode, these amplifiers are driven in parallel to provide a more powerful drive than a normal single-ended headphone amplifier.
Even when used in single-ended mode, these amplifiers are driven in parallel to provide a more powerful drive than a normal single-ended headphone amplifier, enabling the potential of a wide range of headphone types, including high-impedance 600Ω headphones, to be brought out.
The active ground method is a drive method that uses the principle of balanced connection to connect the COLD side to ground, forcing the amplifier circuit to drive the ground closer to 0V.
This not only provides a more ideal ground than dropping to normal ground, but also suppresses the effects of hum noise coming from the power supply, and with the noise floor lowered, it increases quietness and allows you to feel the breath of the artist and the texture of the sound more closely.
Full MQA decoder compatible with CD player digital output
MQA (Master Quality Authenticated) is a high quality audio codec for reproducing studio master quality audio as it really is.
The UD-701N is equipped with an MQA decoder that controls the D/A converted waveform with a precision of 5 microseconds to obtain an analog waveform that is more faithful to the original sound.
The MQA decoder controls the D/A-converted waveform with a precision of 5 microseconds.
The UD-701N is equipped with a full decoder, which enables not only file and network playback, but also decoding of MQA data from digital inputs, allowing you to connect the digital output of your CD player to the UD-701N for MQA CD playback.
Specifications
DAC section
DAC: TEAC ΔΣ discrete DAC x 2
Up-conversion: 2xFs/4xFs/8xFs (up to 384kHz)
Analog audio input
Balanced
Terminal: XLR terminal x 1 system
Input impedance: 50kΩ
Maximum input level: 5 Vrms
Unbalanced
Terminal: RCA pin terminal (gold-plated) x 1 system
Input impedance: 25kΩ
Maximum input level: 2.5 Vrms
Digital audio input】 【USB
USB
Terminal: USB-B terminal x 1 (USB2.0 compliant)
Supported formats
PCM: 16/24/32bit, 44.1k/48k/88.2k/96k/176.4k/192k/352.8k/384kHz
DSD: 2.8M, 5.6M, 11.2M, 22.5MHz
Coaxial Digital
Terminals: RCA pin terminals (gold-plated) x 2
Input level: 0.5 Vp-p
Input impedance: 75Ω
Supported formats
PCM: 16/24bit, 32k/44.1k/48k/88.2k/96k/176.4k/192kHz
DSD: 2.8MHz (supported by 176.4kHz/24bit DoP transmission)
Optical Digital
Terminal: Rectangular optical digital terminal (TOS) x 2 systems
Input level: -24.0 to -14.5dBm peak
Supported formats
PCM: 16/24bit, 32k/44.1k/48k/88.2k/96k/176.4k/192kHz
DSD: 2.8MHz (supported by 176.4kHz/24bit DoP transmission)
ETHERNET
Terminal: RJ-45 x 1 (1000Base-T)
Supported formats
PCM: 16/24/32bit, 32k/44.1k/48k/88.2k/96k/176.4k/192kHz/352.8k/384kHz (stereo)
Only files in integer format can be played.
DSD: 2.8M/5.6M/11.2M/22.5MHz (stereo)
Supported File Formats
PCM lossless: FLAC, Apple Lossless (ALAC), WAV, AIFF, MQA
DSD lossless: DSF, DSDIFF (DFF), DoP
Compressed audio: MP3, AAC (m4a container)
USB flash drive
Terminals: USB A terminal x 2 (front x 1, rear x 1, USB 2.0 compliant)
Supported file system: FAT32, exFAT or NTFS single partition
Supported File Formats
PCM: 16/24/32bit, 32k/44.1k/48k/88.2k/96k/176.4k/192kHz/352.8k/384kHz (stereo)
Only files in integer format can be played.
DSD: 2.8M/5.6M/11.2M/22.5MHz (stereo)
Supported File Formats
PCM lossless: FLAC, Apple Lossless (ALAC), WAV, AIFF, MQA
DSD lossless: DSF, DSDIFF (DFF), DoP
Compressed audio: MP3, AAC (m4a container)
Bluetooth
Bluetooth version: 4.0
Output class: Class 2 (range: approx. 10 m)
Supported profile: A2DP, AVRCP
Supported A2DP codec: LDAC, LHDC, AAC, SBC, Qualcomm aptX audio/HD audio
A2DP content protection: SCMS-T
Number of pairing memory: Up to 8
Analog audio output
Balanced
Terminal: XLR terminal (gold-plated terminal) x 1 system
Output impedance: 220Ω
Output level setting: Fixed (0dB), fixed (+6dB), variable, output off selectable
Maximum output level: 2.0Vrms (1kHz, full scale, 10kΩ load, fixed at 0dB setting), 4.0Vrms (1kHz, full scale, 10kΩ load, fixed at +6dB setting), 12Vrms (1kHz, full scale, 10kΩ load, variable at variable setting)
Unbalanced
Terminal: RCA pin terminal (gold-plated) x 1 system
Output impedance: 180Ω
Output level setting: Fixed (0dB), fixed (+6dB), variable, output off selectable
Maximum output level: 2.0Vrms (1kHz, full scale, 10kΩ load, fixed at 0dB setting), 4.0Vrms (1kHz, full scale, 10kΩ load, fixed at +6dB setting), 6.0Vrms (1kHz, full scale, 10kΩ load, variable at variable setting)
Headphone output
Balanced output
Terminal: 4-pin XLR terminal x 1
Terminal polarity: Pin 1: L+, Pin 2: L-, Pin 3: R+, Pin 4: R-
Unbalanced output
Terminal: 6.3mm stereo standard jack (gold-plated) x 1
Maximum practical output
For balanced connection: 700mW + 700mW (at 32Ω load)
Unbalanced connection: 500mW + 500mW(32Ω x 1 load)
Applicable load impedance: 16 to 600Ω
Clock sync input
Terminal: BNC terminal (gold-plated) x 1
Input frequency: 10MHz
Input impedance: 50Ω
Input level
Square wave: TTL level equivalent
Sine wave: 0.5 to 1.0 Vrms
External control
Trigger input (12V TRIGGER IN)
Terminal: 3.5mm monaural mini jack x 1
Input level: 12V, 1mA
Trigger Output (12V TRIGGER THRU)
Terminal: 3.5mm monaural mini jack x 1
Output level: 12V
Maximum supply current: 100mA
Audio performance: Measurement conditions (input signal: PCM 192kHz, 24bit, measurement output: RCA, DAC low-pass filter: on)
Frequency response: 5Hz to 80,000Hz (+1dB/-5dB)
Total harmonic distortion ratio: 0.005% (1kHz, LPF: 20-20kHz)
S/N ratio: 110dB (A-Weight, IHF-A)
Other】 【Power supply
Power supply: AC100V, 50/60Hz
Power consumption: 40W
Standby power consumption: 0.4W
Dimensions: 444(W)×111(H)×334(D)mm (including protruding parts)
Weight: 11.8kg
Allowable operating temperature: +5°C to +35°C
Allowable operating humidity: 5% to 85% (no condensation)
Allowable storage temperature: -20°C to +55°C
Accessories：Power cord, remote control (RC-1330), AAA batteries for remote control x 2, instruction manual (with warranty)
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