TEAC UD-701N

Network DAC/Preamplifier with Discrete Delta Sigma Design

Revolutionary TEAC ΔΣ Discrete DAC

Instead of using a generic DAC IC, the UD-701N incorporates a newly-developed TEAC ΔΣ (Delta Sigma) discrete DAC comprised of discrete circuitry using FPGA with original algorithms. This achieves a wide, perfectly clear sound field that represents TEAC reaching the pinnacle of its sound objectives.

DSD signals transmitted as-is for ultimate purity
PCM signals converted to 1-bit or multi-bit (user selectable)
Supports 22.5MHz DSD and 384kHz/32-bit PCM playback

⚡ Dual Mono Structure

Best-in-class dual mono design throughout with independent left and right toroidal core transformers, preventing channel interference for rich musical expression and dimensional soundstage.

🔄 Fully-Balanced Transmission

Fully balanced transmission at every stage improves signal-to-noise ratio and dynamic range, conveying signals in their purest state without losing the sense of air inherent in high-resolution sources.

🔌 Four Toroidal Transformers

Dedicated transformers for left/right analog, network module, and digital control sections ensure stable, interference-free power delivery. Linear power strengthens the network module for advanced processing.

🎚️ TEAC-QVCS Volume Control

Quad Volume Control System with four independent circuits (L+, L−, R+, R−) and 0.5dB fine adjustment. Shortest possible signal path prevents degradation for pristine audio quality.

Analog Preamplifier with Premium I/O

Functions as both a USB DAC/Network player and high-quality analog preamplifier with comprehensive connectivity:

Analog Inputs: 2 line inputs via RCA and XLR connectors
Digital Inputs: 2× Coaxial and 2× Optical
TEAC-HCLD2 Buffers: Enhanced-current output with diamond buffer amplifiers in dual-circuit structure

Premium Headphone Amplifier

4-pin XLR headphone amplifier switchable between balanced and active ground. Four diamond buffers (L, R, +, −) enable true balanced drive with parallel operation for single-end use. Drives 600Ω high-impedance headphones with authority and finesse. Ud 701n hp connectors

MQA Full Decoder

Master Quality Authenticated full decoder with 5ms precision waveform control achieves analog waveforms true to original recordings. Greatly reduces "sound blurring" during sudden transients and extreme dynamic shifts.

Supports MQA from files, network streams, and digital inputs—including MQA CD playback when connected to a CD player's digital output.

Network & Streaming Capabilities

Roon Ready

Full RAAT support with high-quality playback, intuitive app control, and multi-room synchronized playback Open home roon ready logo pc

OpenHome

Smart Home app compatibility with playlist management via TEAC HR Streamer and gapless playback

Streaming Services

Spotify Connect, Tidal, Qobuz (lossless CD-quality), and TuneIn Internet Radio Spotify tidal qobuz logo pc

Bluetooth

LDAC, LHDC, aptX HD (96kHz/24-bit capable), plus AAC, aptX, and SBC codecs

Advanced Technologies

RDOT-NEO Upconversion

Upconvert PCM 2×, 4×, or 8× (384kHz max) using fluency logic interpolation to reproduce frequencies above 20kHz Ud 701n bluetooth pc

Bulk Pet USB

Stable data transmission with four preset modes levels processing loads for optimal audio quality Bulk pet logo pc

Vibration Control

Floating transformer structure, tuned side fins, and TEAC pinpoint feet suppress resonances Ud 701n chassis

Premium Construction

Minimized circuit board screws and anti-vibration mechanisms throughout for pure signal integrity

Technical Specifications

DAC TypeTEAC ΔΣ Discrete (FPGA)

Maximum DSD22.5MHz

Maximum PCM384kHz/32-bit

Analog Inputs2 Line (RCA/XLR)

Digital Inputs4 (2× Coax, 2× Optical)

Headphone Output4-pin XLR Balanced

Volume ControlTEAC-QVCS (0.5dB steps)

Power Supply4× Toroidal Transformer

🎵 DAC Section

DAC Chip:
TEAC ΔΣ Discrete DAC × 2

Upconversion:
2xFs / 4xFs / 8xFs (max 384kHz)

🔌 Analog Audio Inputs

Balanced (XLR)

Connectors: XLR × 1 pair

Input Impedance: 50kΩ

Max Input Level: 5Vrms

Unbalanced (RCA)

Connectors: RCA Pin (gold-plated) × 1 pair

Input Impedance: 25kΩ

Max Input Level: 2.5Vrms

💾 Digital Audio Inputs

USB

Connector: USB B-type × 1 (USB 2.0 compliant)

PCM Support: 16/24/32-bit | 44.1k–384kHz

DSD Support: 2.8M / 5.6M / 11.2M / 22.5MHz

Coaxial

Connectors: RCA Pin (gold-plated) × 2 pairs

Input Level: 0.5Vp-p | Impedance: 75Ω

PCM Support: 16/24-bit | 32k–192kHz

DSD Support: 2.8MHz (176.4kHz/24bit DoP)

Optical

Connectors: Rectangular (TOS) × 2 pairs

Input Level: –24.0 to –14.5dBm peak

PCM Support: 16/24-bit | 32k–192kHz

DSD Support: 2.8MHz (176.4kHz/24bit DoP)

Ethernet (Network)

Connector: RJ-45 × 1 (1000Base-T)

PCM Support: 16/24/32-bit | 32k–384kHz (Stereo)

DSD Support: 2.8M / 5.6M / 11.2M / 22.5MHz (Stereo)

Formats: FLAC, ALAC, WAV, AIFF, MQA, DSF, DSDIFF, DoP, MP3, AAC

💿 USB Flash Drive

Connectors:
USB A-type × 2 (Front × 1, Rear × 1)

File Systems:
FAT32, exFAT, NTFS (single partition)

PCM Support:
16/24/32-bit | 32k–384kHz

DSD Support:
2.8M / 5.6M / 11.2M / 22.5MHz

Supported Formats: FLAC, Apple Lossless (ALAC), WAV, AIFF, MQA, DSF, DSDIFF (DFF), DoP, MP3, AAC (m4a)

📡 Bluetooth®

Version: 4.2

Range: Class 2 (10m)

Profiles: A2DP, AVRCP

Codecs: LDAC, LHDC, AAC, SBC, aptX™/HD

🔊 Analog Audio Outputs

Balanced (XLR)

Connectors: XLR (gold-plated pins) × 1 pair

Output Impedance: 220Ω

Output Levels: Fixed (0dB), Fixed (+6dB), Variable, or Off

Maximum Output:
• 2.0Vrms (Fixed 0dB)
• 4.0Vrms (Fixed +6dB)
• 12Vrms (Variable)

Unbalanced (RCA)

Connectors: RCA Pin (gold-plated) × 1 pair

Output Impedance: 180Ω

Output Levels: Fixed (0dB), Fixed (+6dB), Variable, or Off

Maximum Output:
• 2.0Vrms (Fixed 0dB)
• 4.0Vrms (Fixed +6dB)
• 6.0Vrms (Variable)

🎧 Headphone Outputs

Balanced (4-pin XLR)

Connector: 4-pin XLR × 1

Pin Assignment: Pin1: L+, Pin2: L–, Pin3: R+, Pin4: R–

Max Output Power: 700mW + 700mW (32Ω loaded)

Unbalanced (6.3mm Jack)

Connector: 6.3mm Stereo jack (gold-plated) × 1

Max Output Power: 500mW + 500mW (32Ω loaded)

Supported Impedance: 16 to 600Ω

⚙️ Clock Sync & External Control

Clock Sync Input

Connector: BNC (gold-plated) × 1

Input Frequency: 10MHz

Input Impedance: 50Ω

12V Trigger

Trigger Input: 3.5mm mono mini jack
12V, 1mA

Trigger Thru: 3.5mm mono mini jack
12V, 100mA max

📊 Audio Performance

Measurement conditions: 192kHz/24-bit PCM input, RCA output, DAC low-pass filter: On

5Hz–80kHz

Frequency Response
(+1dB/–5dB)

0.002%

Total Harmonic
Distortion

108dB

S/N Ratio
(A-Weight, 1kHz)

⚡ Power & Physical Specifications

Power:
AC 120V, 60Hz (US/Canada)
AC 230V, 50Hz (UK/Europe)

Power Consumption:
40W (Standby: 0.4W)

Dimensions:
444 (W) × 111 (H) × 334 (D) mm
(including protrusions)

Weight:
11.8kg (26 lbs)

🌡️ Operating Conditions

Operating Temperature:
+5°C to +35°C

Operating Humidity:
5% to 85% (no condensation)

Storage Temperature:
–20°C to +55°C

📦 Included Accessories

Power Cord • Remote Control (RC-1330) • AAA Batteries × 2 • Owner's Manual • Foot Pads × 3

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