Teac UD-301-B Dual Monaural Digital to Analog Audio Converter (Black)

Teac UD-301-B Dual Monaural Digital to Analog Audio Converter (Black)

Teac UD-301-B Dual Monaural Digital to Analog Audio Converter (Black)

B&H # TEUD301B MFR # UD-301-B
Teac UD-301-B Dual Monaural Digital to Analog Audio Converter (Black) Back View

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Product Highlights

  • 2-Channel, High-Resolution D/A Converter
  • Burr-Brown Converters
  • Supports PCM Sample Rates up to 192 kHz
  • Supports DSD Sample Rates up to 5.6 MHz
  • Dual Mono Design Eliminates Cross Talk
  • USB, Coaxial, and Optical Digital Inputs
  • XLR and RCA Analog Outputs
  • Front-Panel Headphone Jack
  • Selectable and Adjustable Output Level
  • Supports Asynchronous USB Mode
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Teac UD-301-B Overview

  • 1Description

The black Teac UD-301-B is a dual monaural digital to analog audio converter designed to provide premium audio reproduction for audiophiles and music connoisseurs in listening rooms, home audio setups, and studios. Its dual mono design uses separate converters and amplifiers for the left and right channels to eliminate crosstalk between channels.

High-resolution Burr-Brown converters support PCM audio up to 32-bit / 192 kHz resolution and DSD audio up to 1-bit / 5.6 MHz resolution. Digital signal can be sourced from coaxial, optical, or USB inputs. When streaming via USB, the UD-301-B allows jitter-reducing asynchronous transmission, which uses the internal clock to adjust and stabilize the timing of the input signal.

Balanced XLR and unbalanced RCA analog outputs are available on the back panel. Their levels can be set to fixed, variable, or off via a 3-position switch. The front-panel 1/4” headphone jack utilizes a motor-driven volume knob for smooth level adjustment.

5.6 MHz DSD Native Playback

  • USB input allows DSD native playback that converts 5.6 MHz DSD data directly into analog signals without needing to first convert them to PCM
  • Supports both the ASIO2.1 and DoP (DSD over PCM) conversion methods
  • Using the AI-301DA Digital-To-Analog Converter in conjunction with the high-resolution playback PC application, TEAC HR audio player (downloadable for free from the TEAC website), the user can access high-resolution digital audio, including 5.6 MHz DSD or 32-bit / 192 kHz PCM files without having to deal with complex settings

Asynchronous USB Input

  • When receiving digital audio signals from a computer via a USB cable, the device can operate in asynchronous mode—the timing of the input signal is controlled by the device's internal clock
  • With asynchronous transmission over USB, signal-compromising jitter is effectively eliminated, allowing transmission of clean digital audio signal

Up to 192 kHz Up-Conversion Option

  • When handling digital signals up to 96 kHz, the user has the option to up-convert to double or quadruple the original signal sampling frequency
  • When playing back a 44.1 kHz sound source (equivalent to CD sound quality) a smoother analog audio signal can be obtained in order to convert to a higher resolution digital signal
  • Up-conversion can be enabled/disabled by the user

Dual Monaural Design

  • Each of the left and right channels has its own single monaural circuit
  • Prevents mutual interference between the left and right channels and enables pure stereo playback

MUSE Operational Amplifier

  • One MUSES8920 operational amplifier unit is used for each channel (left and right)
  • MUSES8920 operational amplifier unit is designed for hi-fi audio and made by New Japan Radio

BurrBrown PCM1795 DAC

  • Internal Burr-Brown 1795 digital-to-analog converters for each channel (left and right) for true dual monaural operation
  • Digital-to-analog converters are capable of 32-bit processing, and are hence able to process 5.6 MHz DSD data in large quantities
  • Accurate playback of high-resolution sound sources

Dual Monaural Headphone Amplifiers Used in the CCLC Circuits

  • 100mW + 100mW output (at 32 Ohms load) headphone amplifier uses CCLC (Coupling Capacitor-Less Circuit) technology
  • Negative impact of capacitors on sound quality is eliminated, providing full low-frequency sound and a responsive headphone listening environment with great spatiality

Doubles as a High-Performance Headphone Amplifier

  • XLR and RCA outputs on the rear panel can be switched off
  • Headphone output can be enhanced by cutting the power supply and isolating circuits that are unrelated to headphone output
  • Volume control for the headphones on the rear panel is completely separate from the output mode (fixed, adjustable, or off)
  • Standard stereo jack for headphone output

Toroidal Core Power Transformer

  • High-efficiency toroidal core power transformer with low magnetic flux leakage for stable operation of the twin left and right D/A converters
  • Transformer provides a stable power supply even in situations where a sudden surge of power is required, such as when starting up at very high volume

Compact Aluminum Enclosure

  • 8.5"-wide rugged aluminum enclosure
  • Motor-driven knob has the tactile feel one would expect from controls found in high-end hi-fi components

XLR Balanced Output

  • XLR balanced output allows connection to both domestic hi-fi components and professional audio equipment
  • Offers a high degree of interoperability with devices ranging from those used by audiophiles all the way up to those used by professionals

Can be Connected to a Power Amp in Pre-Amp Mode

  • XLR balanced output and RCA unbalanced outputs on the rear panel can both be set to Fixed, Adjustable, or Off mode
  • Using the Adjustable mode, the unit can be connected to a power amplifier to create a system with a separate pre amp and power amp or, alternatively, can be directly connected to an active speaker


  • Three-pin IEC AC power socket
  • Auto power save function
In the Box
Teac UD-301-B Dual Monaural Digital to Analog Audio Converter (Black)
  • Power Cord
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description

    Teac UD-301-B Specs

    D/A Converter
    Model 2 x Burr-Brown PCM1795
    Conversion Up-Conversion: 192 kHz (on/off selection)
    Digital Audio Inputs
    Connectors 1 x RCA jack (0.5 V p-p, 75 Ohms)
    1 x optical digital (-24 to -14.5 dBm peak)
    1 x USB Type-B (USB 2.0, supports asynchronous mode)
    Sampling Frequency DSD (via USB): 2.8 and 5.6 MHz
    PCM (via USB and coaxial): 32, 44.1, 48, 88.2, 96, 176.4, and 192 kHz
    PCM (via optical): 32, 44.1, 48, 88.2, and 96 kHz
    Bit Rate 16, 24, and 32-bit (32-bit only via USB)
    Analog Audio Outputs
    Jacks 2 x XLR 3-pin jacks
    2 x RCA coaxial jacks
    Output Impedance XLR: 200 Ohms
    RCA: 100 Ohms
    Maximum Output Level 1 kHz, full scale, 10 kOhms, XLR (0 dB Gain): +14 dB
    RCA: 20 Vrms
    Frequency Response 5 Hz to 55 KHz (-3 dB) at 192 kHz sampling frequency
    SNR 105 dB
    THD 0.0015% (1 kHz) at 192 kHz sampling frequency
    Headphone Output
    Connector 6.3 mm (1/4") stereo phone jack
    Maximum Output 100 mW + 100 mW (32 Ohms with load with 0.1% distortion)
    Nominal Impedance 8 to 600 Ohms
    Audio Performance
    Frequency Response 5 Hz to 55 kHz (-3 dB, in the case of 192 kHz sampling frequency)
    SNR 105 dB
    Distortion 0.0015% (1 kHz, in the case of 192 kHz sampling frequency)
    Power Supply USA/Canada: 120 VAC, 60 Hz
    Power Consumption 10 W
    Computer Requirements Windows Vista, 7, 8, 8.1 (32 / 64-bit), and XP (32-bit)
    Mac OS X Snow Leopard (10.6), OS X Lion (10.7), OS X Mountain Lion (10.8), and OS X Mavericks (10.9)
    Temperature Operating: 41 to 95°F (5 to 35°C)
    Storage: -4 to 131°F (-20 to 55°C)
    Operating Humidity 5 to 85% (non-condensing)
    Enclosure Material Aluminum
    Dimensions (W x H x D) Approximately 8.5 x 2.4 x 9.4" (21.5 x 6.1 x 23.8 cm) including protrusions
    Weight Approximately 4.4 lb (2 kg)
    Packaging Info
    Package Weight 6.5 lb
    Box Dimensions (LxWxH) 15.0 x 13.4 x 6.3"

    Teac UD-301-B Reviews


    The Teac has a motor-driven knob. Does this imply I can purchase a remote control for the volume control?
    Asked by: Anonymous
    The inside scoop from Teac is this is the same volume know used with the Teac AI-301DA. These two units have similar physical traits, but the remote feature is available for the AI-301DA (B&H# TEAI301DAB) only.
    Answered by: James B.
    Date published: 2018-08-25
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