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TEAC NT-505-X USB DAC and Network Player with Built-In Preamplifier

Regular price $1,999.99
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Product Information

Model: NT505XB | UPC: 043774035144


What's In The Box

Product Information

Model: NT505XB | UPC: 043774035144

Opening a new window to music on your desktop or laptop computer, the TEAC NT-505-X USB DAC Network Player offers near-endless connection options in a package that can easily integrate into any space you choose.


  • Dual mono structure with one ESS Technology ES9038Q2M converter each for the left and right channels
  • Hi-Res audio playback supporting 22.5MHz and PCM 768kHz/32-bit PCM
  • Supports TIDAL, Qobuz and subscription music streaming services
  • Roon Ready
  • MQA decoder (for network streaming)
  • Up-conversion up to 24.5MHz DSD and 384kHz/32-bit PCM
  • DSD128 (5.6MHz) and PCM 192kHz/24-bit Network streaming from NAS/PC
  • Bluetooth® receiver supporting LDAC™ and Qualcomm® aptX™ HD
  • Fully balanced analog volume circuit with TEAC-QVCS high precision volume control
  • Original TEAC-HCLD2 enhanced-current output buffer circuit
  • Newly-developed “Stressless Foot” design with three support points
  • Semi-floating design top panel
  • 3.5mm 4-pole headphone jack supports separate grounding

ESS Technology ES9038 Q2M High-Performance DAC Supports Resolutions up to 22.5MHz DSD and 768kHz/32bit PCM

Each stereo channel features one DAC chip. The ESS Technology ES9038Q2M SABRE32 Reference DAC is top of the line in the high-end audio market. Using 32-bit HyperStream® II DAC architecture and Time Domain Jitter Eliminator (both of which are ESS original technologies), you get an outstanding dynamic range and accurate audio playback.

Dual Monaural Circuit and Fully-Balanced Design

A dual monaural circuit configuration is used throughout, from the power supply (including power transformers) to the D/A converters in the digital section and the Analog output stage. From the high-performance D/A converters to the massive toroidal-core power transformers, each element is configured for single-channel processing. This prevents mutual interference effects while reproducing a rich acoustic expressiveness. In addition, the Analog audio signals of both the left and right channels are processed in full balanced mode soon after the D/A converters all the way to the output terminal, contributing to an improved S/N ratio and extended dynamic range.

Support for OpenHome and Roon Ready

Common control apps that support OpenHome can be used with the NT-505-X, which also supports this platform. Moreover, playlists on the NT-505-X can be managed using TEAC HR Streamer and other control apps that support OpenHome. Gapless playback is also supported. With support for Roon Ready high-quality audio playback with easy and convenient operation using apps, multi-room synchronized playback options are limitless.

Supports Spotify Connect, TIDAL, Qobuz, and TuneIn

By connecting the unit to a home network using a LAN cable, music files saved on NAS music servers and computers can be accessed and played back. In addition, this unit also supports the Spotify, TIDAL, and Qobuz subscription Internet music streaming services. These enable listening to tens of millions of lossless CD-quality (44.1kHz/16bit) music tracks.

MQA Decoder for Master Quality Streaming

In order to achieve an Analog waveform closer to the original signal, the NT-505-X supports MQA decoding while also supporting a high sampling rate. The MQA decoder is a new technology that controls analog waveforms with precision and it reproduces sound in a manner that is perceived to be as close as possible to the original (to human hearing). Furthermore, a high-efficiency compression algorithm makes huge Hi-Res audio files compact in size, so you will be able to enjoy Hi-Res audio sources regardless of the speed of your Internet connection

High-Quality Wireless Audio Streaming Via Bluetooth®

In addition to conventional SBC and AAC codecs, the NT-505-X also supports LDAC™ (24bit/96kHz Hi-Res audio transmission), and Qualcomm® aptX™ HD, a codec that uses 24bit/48kHz format transmission. These allow you to playback playlists on your smartphone and tablet wirelessly.

Hi-Res Audio Playback from USB Flash Drive

The USB port on the front panel allows you to playback Hi-Res audio formats including DSD128 (5.6MHz) and PCM 24bit/192kHz downloaded from the Internet or digitally recorded.

Dual Onboard Clocks for 44.1k and 48kHz, and an External Clock Input

Instead of connecting to an unstable and noisy PC clock during USB audio playback, a more accurate and on-board clock is anchored by a high-precision, low phase-noise, audio-grade crystal oscillator for USB asynchronous transfer mode. The NT-505-X accommodates two onboard clocks exclusively for 44.1kHz and 48kHz sampling frequencies and applies the appropriate one to incoming digital signals - those that are multiples of 44.1k or 48k - to reproduce identical sound to the original by eliminating jitter effects on the audio signal.

In addition, an external 10MHz clock input is also provided, to synchronize with an even higher-precision master clock generator, such as the TEAC CG-10M/CG-10M-A, for yet further upgraded audio playback with excellent sound quality.

Up-Conversion up to 384kHz/32bit PCM and 24.5MHz DSD

Employing RDOT-NEO (Refined Digital Output Technology NEO), a fluency algorithm that renders digital audio signals smoothly, the NT-505-X up-converts PCM digital signals up to 384kHz/32bit PCM and 24.5MHz DSD. With the up-conversion function activated, you will hear an improvement in quality.

"Bulk Pet" USB transfer technology for enhanced audio quality

When transferring large volumes of digital data for Hi-Res audio sources through USB cables using conventional isochronous transfer mode, large variations can occur in the processing loads of the sending computer and the receiving USB DAC. Changing the processing burden on the computer directly affects audio quality so users can select the setting they prefer (from four transmission modes).

7 Types of PCM Digital Filters

There are seven types of PCM digital filters, allowing you to apply the filter that best matches the file format or type of music you're listening to. The filter can be changed at the touch of a button on the remote control, allowing you to enjoy the different sonic nuances of each filter.

Dual High-Capacity Toroidal-Core Power Transformers

The dual monaural theme continues. Two over-sized high-capacity toroidal-core power transformers are employed in the NT-505-X, supplying stable, individual current sources for each of the left and right channels. This means neither channel will be affected by changes in the power consumption of the other during digital processing.

Improved TEAC-HCLD2 Enhanced-Current Output Buffer Amp Circuit

TEAC employed the TEAC-HCLD 2 for the analog output circuit, an upgrade of the TEAC-HCLD circuit enhanced-current output buffer amp that increases crucial current output capacity (HCLD: High Current Line Driver). This model now uses line buffer ICs with extremely high current output capacity. By using a positive-negative two-circuit structure for each channel, the drive can be differential with balanced output and parallel with unbalanced output. Transmitting audio signals without degrading their dynamism becomes possible with increased current supply capacity.

TEAC-QVCS Four-Circuit-Structure High-Precision Volume Control Newly Incorporated for Preamp Circuits

TEAC-QVCS (Quad Volume Control System) is used for the volume circuit. This electronic volume control is a variable gain amp type comprised of four discrete circuits for left, right, positive and negative (L+, L−, R+, R−). By placing the variable gain amp volume control, which processes in analog, in the audio signal path on the circuit board, issues with noise resulting from diverging wiring are avoided.

Furthermore, this TEAC-QVCS enables volume adjustment in 0.5dB increments, allowing you to set the perfect volume for your audio system or headphones.

Carefully Crafted Line Amp Section Can Also Be Used as A Headphone Amplifier

The improved TEAC-HCLD2 circuit also has high drive capability as a headphone amp, so you can plug in multiple types of headphones. In addition, the NT-505-X supports the Ground Separate connection by separating circuit ground on both Left and Right channels from the amplifier section to the headphone jack, to improve channel separation which is crucial for headphone listening, while delivering clear sound with a wide visible sound stage.

All-Metal Enclosure for Vibration Resistance

Since the entire body is constructed from metal panels that are resistant to external noise, intrusion of electromagnetic noise generated by computers and other devices is suppressed. A clean internal environment with little noise has been realized even in conditions that are difficult for audio equipment. Furthermore, 8mm-thick aluminum panels covering both sides of the all-metal chassis provide a strong and stable structure that prevents twisting and bending. The unit can be placed on a desk, side table, or any other small space.

Symmetrically Laid Out XLR and RCA Output Jacks

The NT-505-X is equipped with both balanced and unbalanced analog audio outputs. A pair of XLR connectors and another pair of RCA connectors - each gold-plated - are symmetrically laid out, hinting at the dual monaural arrangement inside, and allowing a wide range of possible audio configurations. A wide-spaced pitch layout for the RCA outputs accommodates professional-grade plugs with large-diameter shells. The NT-505-X has a total of 5 digital inputs: USB audio, coaxial, optical on the rear panel, and a combination jack on the front panel (for coaxial and optical, supporting PCM 24bit/192kHz and DSD64 (2.8MHz) in DoP format).

Newly-Developed Stressless Foot Design

TEAC’s newly-developed original Stressless Foot design with three support points enables stable placement of the unit so that it is not impacted by slight irregularities in the surface beneath it. Compared to the original feet used in previous designs, these feet are only partially fixed to the chassis. This design was developed based on the concept that by allowing the feet to vibrate freely, more natural sound reverberations could be achieved. The tops of the conical feet, which are made of machined steel, are attached so that they hang from the bottom of the chassis and swing freely when the unit is lifted. While maintaining a sense of placement like that of the pin-point spiked feet used by previous models, this design enables more natural rich reverberations.


  • Supported formats
    • USB input (back)
      • PCM (16/24/32-bit): 44.1/48/88.2/96/176.4/192/352.8/384/705.6/768kHz
      • DSD: 2.8/5.6/11.2/22.5MHz
    • LAN/USB input (front)
      • PCM (16/24/32-bit): 32/44.1/48/88.2/96/176.4/192/352.8/384kHz
      • DSD: 2.8/5.6MHz
    • Coaxial digital input
      • PCM (16/24-bit): 32/44.1/48/88.2/96/176.4/192kHz
      • DSD: 2.8MHz (supported with 176.4kHz/24-bit DoP transmission)
    • Optical digital input
      • PCM (16/24-bit): 32/44.1/48/88.2/96/176.4/192kHz
      • DSD: 2.8MHz (supported with 176.4kHz/24-bit DoP transmission)
  • DAC section
    • USB DAC: 2 ES9038Q2M D/A converters made by ESS Technology, Inc.
    • Upconversion (maximum): 384kHz/32-bit PCM or 24.5MHz DSD
    • Digital filters
      • PCM filters: Linear phase fast roll-off, linear phase slow roll-off, minimum phase fast roll-off, minimum phase slow roll-off, apodizing fast roll-off, hybrid fast roll-off, brick wall, off
  • LAN
    • Connector: RJ-45 x1 (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
    • Coaxial digital (rear): RCA pin x1 (gold-plated)
      • Input level: 0.5Vp-p
      • Input impedance: 75Ω
    • Optical digital (rear): TOS-link x1
      • 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: v4.2
      • Output class: Class 2 (Range: approx. 33ft/10m)
      • Supported profiles: A2DP, AVRCP
      • Content protection: SCMS-T
      • Supported codec: LDACTM, Qualcomm® aptXTM HD, aptXTM, AAC, SBC
      • No. of paired device: maximum 8 devices
  • Audio Outputs
    • XLR balanced: XLR x1 pair (gold-plated)
      • Output level: Fixed (0dB), Fixed (+6dB), variable, output off (selectable)
      • Maximum output level
        • 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 x1 pair (gold-plated)
      • Output level: Fixed (0dB), Fixed (+6dB), variable, output off (selectable)
      • Maximum output level
        • 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) 4-pollar stereo jack with gold-plated
      • Polarity: Tip: L+, Ring1: R+, Ring3: L-, Sleeve: RMaximum output 500mW + 500mW (into 32Ω)
    • Supported impedance: 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: 5 – 80,000 Hz (+1/–5 dB, 192kHz PCM input, RCA output, Digital Filter on)
    • Total harmonic distortion: 0.0015% or less (192kHz PCM input, RCA output, Digital Filter on)
    • S/N ratio: 110dB or higher (192kHz PCM input, RCA output, digital filter off)
  • Operating systems supported by drivers
    • Windows
      • Windows10
      • Windows 8.1 (32/64-bit editions)
      • Windows 8 (32/64-bit editions)
      • Windows 7 (32/64-bit editions)
    • Macintosh
      • Big Sur (macOS 11.0)
      • Catalina (macOS 10.15)
      • Mojave (macOS 10.14)
      • High Sierra (macOS 10.13)
      • Sierra (macOS 10.12)
      • El Capitan (OS X 10.11)
      • Yosemite (OS X 10.10)
  • General
    • Power Supply
    • AC 120V 60Hz (US/Canada)
    • AC 220 to 240V 50Hz/60Hz (UK/Europe)
    • Power consumption: 20 W (0.4 W in standby)
    • Dimensions (W x H x D, Including protrusions): 11.4” x 3.3” × 9.8”
    • Weight: 9.3 lbs

What's In The Box

  • NT-505-X USB DAC and Network Player with Built-In Preamplifier
  • Power cord
  • RCA mini plug adapter cable
  • Remote control (RC-1330)
  • (3) Feet cushions
  • Owner's manual
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