Full Description
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The NT-505 is a flagship dual monaural USB DAC with versatile network playback capabilities. It successfully incorporates the latest network technologies, along with TEAC’s decades of accumulated audio design experience, in an attractive package with an A4-sized footprint.
Like its predecessor (the NT-503) it employs a dual monaural circuit design to process audio signals with even greater purity, with the latest VERITA AK4497 DAC chip used on each of the two channels. This improves the S/N (signal to noise) ratio by processing each channel individually in monaural mode, as well as delivering DSD512 (22.5MHz) native and 768kHz/32-bit PCM playback capabilities.
The analogue section, which is one of the keys to sound quality, includes four TEAC-HCLD buffer amp circuits that allow different drive modes, – fully-balanced drive for balanced output, and parallel drive mode for unbalanced output – to achieve enhanced acoustic expression. On the network audio side, the NT-505 supports high-quality music subscription services, namely TIDAL and Qobuz, and is Roon ready. There’s also a built-in MQA decoder, and you will enjoy unlimited music content on the Internet thanks to its high-quality digital and analogue processing technologies. In addition to a wide range of digital and analogue inputs, a Bluetooth® receiver supporting LDAC™ and Qualcomm® aptX HD™ allows you to stream high-quality audio wirelessly from your smartphone to this flagship USB DAC.
The NT-505 is a compact and high-spec USB DAC and network player that supports the latest Hi-Res formats and online music subscription services.
Key Features
- Hi-Res audio playback supporting DSD512 (22.6MHz) and PCM 768kHz/32-bit PCM
- Dual monaural circuit design with a high-end AKM VERITA AK4497 DAC on each channel
- Supports MQA decoder and music subscription services (TIDAL and Qobuz) and is Roon-ready
- DSD128 (5.6MHz) and PCM 192kHz/24-bit Network streaming from NAS/PC
- 5 types of PCM digital filters and 2 types of DSD digital filters
- Up-conversion up to 24.5MHz DSD and 384kHz/32-bit PCM
- Dual on-board clocks for 44.1kHz and 48kHz frequencies, and 10MHz external clock input
- Bluetooth® receiver supporting LDAC™ and Qualcomm® aptX™ HD
- TEAC-HCLD output buffer circuit and TEAC-QVCS volume control for high quality sound
- “Bulk Pet” USB transfer technology, with four transfer modes to vary sound character *1
- Free TEAC HR Audio Player and TEAC HR Streamer app
USB Input
| PCM | 16/24/32-bit, 44.1/48/88.2/96/176.4/192/352.8/384/705.6/768 kHz |
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| DSD | 2.8/5.6/11.2/22.5 MHz |
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Coaxial Digital Input
| PCM | 16/24-bit, 32/44.1/48/88.2/96/176.4/192 kHz |
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| DSD | 2.8MHz (supported with 176.4kHz/24-bit DoP format) |
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Optical Digital Input
| PCM | 16/24-bit, 32/44.1/48/88.2/96/176.4/192 kHz |
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| DSD | 2.8 MHz (supported with 176.4kHz/24-bit DoP format) |
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DAC
| USB DAC | Asahi Kasei Microdevices AK4497 × 2 |
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| Up-Conversion | Up to 384kHz/32-bit PCM, 22.5MHz DSD |
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| PCM Filters | Sharp Roll Off, Slow Roll Off, Short Delay Sharp, Short Delay Slow, Low Dispersion, off |
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| DSD Cutoff Frequencies Narrow | 39kHz (at 2.8M), 78kHz (at 5.6M), 156kHz (at 11.2M) or 312kHz (at 22.5M) |
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| DSD Cutoff Frequencies Wide | 76kHz (at 2.8M), 152kHz (at 5.6M), 304kHz (at 11.2M) or 608kHz (at 22.5M) |
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Lan
| Connector | RJ-45 x 1 (100Base-T) |
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| MQA Decoder | Built-in |
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Audio Inputs
| USB | USB B port, USB 2.0, Asynchronous Mode Transfer, Bulk Transfer |
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| Compatible Software | TEAC HR Audio Player (Windows, Macintosh) |
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| COAXIAL digital (rear) | RCA Pin × 1 (Gold-Plated) |
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| Input Level | 0.5 Vp-p |
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| Input Impedance | 75 Ω |
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| Optical Digital (rear) | TOS-Link × 1 |
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| Input Level | −24.0 dBm to −14.5 dBm Peak |
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| Coaxial Digital (front) | 1/8” (3.5mm) mini* × 1 (Combined with Optical digital Input, Detected Automatically) |
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| Input Level | 0.5 Vp-p |
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| Input level | −24.0 dBm to −14.5 dBm peak |
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| USB (front) | USB A port |
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| Supported media | USB Flash Drive |
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Bluetooth
| Bluetooth® version | 4.0 |
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| Output class | Class2 (Range: Approx. 33ft / 10m) |
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| Supported Profiles | A2DP, AVRCP |
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| Content Protection | SCMS-T |
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| Supported Codec | LDAC™, Qualcomm® aptX™ HD, aptX™, AAC, SBC |
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| No. of Paired Device | Maximum 8 Devices |
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Audio Outputs
| XLR balanced XLR | × 1 pair (gold-plated) |
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| Output level | Fixed (0 dB), fixed (+6 dB), Variable, Output Off (Selectable) |
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| Maximum Output Level | 2.0 Vrms (1 kHz, Full Scale, into 10 kΩ, When Set to Fixed (0 dB)) |
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| Output Impedance | 188 Ω |
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| RCA Unbalanced | RCA pin × 1 Pair (Gold-Plated) |
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| Output Level Fixed | (0 dB), fixed (+6 dB), Variable, Output Off (Selectable) |
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| Maximum Output Level 2.0 Vrms | (1 kHz, Full Scale, into 10 kΩ, When Set to Fixed (0 dB)) |
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| Output impedance | 150 Ω |
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Headphone Outputs
| Connector | 1/4” (6.3mm) Stereo TRS jack × 1 (Gold-Plated) |
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| Maximum Output | 500 mW + 500 mW (into 32 Ω) |
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| Supported Impedances | 16–600 Ω |
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clock Section Internal
| Type | Crystal Oscillator |
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| Number of Clocks | 2 (44.1kHz and 48kHz) |
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External Clock Input
| Connector | BNC (Gold-Plated) |
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| Input Frequency | 10 MHz |
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| Input Impedance | 50 Ω |
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| Input Level | Rectangle Wave Equivalent to TTL Levels | Sine Wave 0.5 to 1.0 Vrms ading |
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Audio Performance
| Frequency Response | 10 Hz – 80,000 Hz (+1/–3 dB, 192kHz PCM Input, RCA Output, Digital Filter off) |
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| Total Harmonic Distortion | 0.002 or less (192kHz PCM Input, RCA Output, Digital Filter Off) |
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| S/N Ratio | 110 dB or Higher (192kHz PCM Input, RCA Output, Digital Filter Off) |
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Operating Systems
| Windows | Windows 10 | Windows 8.1 (32-bit, 64-bit) | Windows 8 (32-bit, 64-bit) | Windows 7 (32-bit, 64-bit) |
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| Macintosh | High Sierra (macOS 10.13) | Sierra (macOS 10.12) | El Capitan (OS X 10.11) | Yosemite (OS X 10.10) | Mavericks (OS X 10.9) | Mountain Lion (OS X 10.8) | Lion (OS X 10.7) |
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General
| Power Supply | AC 220-240V 50Hz (UK/Europe) |
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| Power Consumption | 20 W (0.4 W in Standby) |
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| Overall dimensions (W x H x D, including protrusions) | 290 × 81.2 × 248.7 mm / 11.4” x 3.2” x 9.8” |
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| Weight | 3.9 kg / 8.6 lbs. |
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