TEAC Streamers DACs Preamplifiers
Teac NT-505 Network Player Preamplifier
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 Analog 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 Analog processing technologies.
In addition to a wide range of digital and analog inputs, a Bluetooth® receiver supporting LDAC™ and Qualcomm® aptX HD™ allow 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.
TEAC NT-505 Network Player DAC Preamplifier Specification
| Supported formats | |
| USB input | |
| PCM | 16/24/32 bit 44.1k/48k/88.2k/96k/176.4k/192k/352.8k/384k/705.6k/768k Hz |
| DSD | 2.8M/5.6M/11.2M/22.5M Hz |
| Coaxial digital input | |
| PCM | 16/24 bit 32k/44.1k/48k/88.2k/96k/176.4k/192k Hz |
| DSD | 2.8MHz(supported with 176.4kHz/24-bit DoP format) |
| Optical digital input | |
| PCM | 16/24 bit 32k/44.1k/48k/88.2k/96k/176.4k/192k Hz |
| DSD | 2.8MHz(supported with 176.4kHz/24-bit DoP format) |
| DAC section | |
| USB DAC | Asahi Kasei Microdevices AK4497×2 |
| Up-conversion | up to 384kHz/32-bit PCM, 22.5MHz DSD |
| Digital filters | |
| PCM filters | Sharp Roll Off, Slow Roll Off, Short Delay Sharp, Short Delay Slow, Low Dispersion, off |
| DSD cutoff frequencies | Narrow : 39kHz (at 2.8M), 78kHz (at 5.6M), 156kHz (at 11.2M) or 312kHz (at 22.5M) Wide : 76kHz (at 2.8M), 152kHz (at 5.6M), 304kHz (at 11.2M) or 608kHz (at 22.5M) |
| LAN section | |
| Connector | RJ-45×1(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 (Windows, Macintosh) |
| COAXIAL digital (rear) | RCA pin×1 (gold-plated) |
| Input level | 0.5Vp-p |
| Input impedance | 75Ω |
| Optical digital (rear) | TOS-link×1 |
| 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 | 4.0 |
| Output class | Class2 (Range: approx. 33ft/10m) |
| Supported profiles | A2DP, AVRCP |
| Content protection | SCMS-T |
| Supported codec | LDAC™, Qualcomm® aptX™ HD, aptX™, AAC, SBC |
| No. of paired device | maximum 8 devices |
| Audio outputs | |
| XLR balanced | XLR×1 pair (gold-plated) |
| Output level | Fixed (0dB), fixed (+6dB), variable, output off (selectable) |
| Maximum output leve | 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×1 pair (gold-plated) |
| Output level | Fixed (0dB), fixed (+6dB), variable, output off (selectable) |
| Maximum output leve | 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 | 1/4” (3.5mm) Stereo TRS jack×1 (gold-plated) |
| Polarity | Tip:L+, Ring1:R+, Ring3:L-, Sleeve:R- |
| Maximum output | 500mW + 500mW (into 32Ω) |
| Supported impedances | 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 | 10 to 80,000 Hz (+1/-3 dB, 192kHz PCM input, RCA output, digital filter off) |
| Total harmonic distortion | 0.002% or less (192kHz PCM input, RCA output, digital filter off) |
| S/N ratio | 110dB or higher (192kHz PCM input, RCA output, digital filter off) |
| Power supply | |
| US/Canada | AC 120V 60Hz |
| UK/Europe | AC 220 to 240V 50Hz |
| Power consumption | 18W (0.4W in standby) |
| dimensions (including protrusions) | 290(W)×81.2(H)×248.7(D) mm / 11.4”(W)×3.2”(H)×9.8”(D) |
| Weight | 3.9kg / 8.6lbs |
Teac UD-505 Network Player Preamplifier
Like its predecessor models, the UD-501 and UD-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 Analog section, which is one of the keys to sound quality, includes four TEAC-HCLD buffer amp circuits process different drive modes, – fully-balanced drive for balanced output, and parallel drive mode for unbalanced output, – to achieve enhanced acoustic expressive.
The headphone section is remarkable. A totally new 4.4mm headphone jack, called Pentaconn, is employed, allowing balanced and active ground connections within a single jack, while conventional 1/4″ phone jacks are also provided.
In addition to a wide range of digital and Analog inputs, a Bluetooth® receiver supporting LDAC™ and Qualcomm® aptX HD™ allows you to enjoy high-quality wireless audio streaming from your smartphone on this flagship USB DAC.
The UD-505 is a compact and high-spec USB DAC and headphone amplifier that supports today’s high sampling rate Hi-Res formats.
TEAC UD-505 Network Player DAC Preamplifier Specification
| Supported formats | |
| USB input | |
| PCM | 16/24/32 bit 44.1k/48k/88.2k/96k/176.4k/192k/352.8k/384k/705.6k/768k Hz |
| DSD | 2.8M/5.6M/11.2M/22.5M Hz |
| Coaxial digital input | |
| PCM | 16/24 bit 32k/44.1k/48k/88.2k/96k/176.4k/192k Hz |
| DSD | 2.8MHz(supported with 176.4kHz/24-bit DoP format) |
| Optical digital input | |
| PCM | 16/24 bit 32k/44.1k/48k/88.2k/96k/176.4k/192k Hz |
| DSD | 2.8MHz(supported with 176.4kHz/24-bit DoP format) |
| DAC section | |
| USB DAC | Asahi Kasei Microdevices AK4497×2 |
| Up-conversion | up to 384kHz/32-bit PCM, 22.5MHz DSD |
| Digital filters | |
| PCM filters | Sharp Roll Off, Slow Roll Off, Short Delay Sharp, Short Delay Slow, Low Dispersion, off |
| DSD cutoff frequencies | Narrow : 39kHz (at 2.8M), 78kHz (at 5.6M), 156kHz (at 11.2M) or 312kHz (at 22.5M) Wide : 76kHz (at 2.8M), 152kHz (at 5.6M), 304kHz (at 11.2M) or 608kHz (at 22.5M) |
| Audio inputs | |
| USB | USB B port, USB 2.0, asynchronous mode transfer, bulk transfer |
| Compatible Software | TEAC HR Audio Player (Windows, Macintosh) |
| COAXIAL digital (rear) | RCA pin×1 (gold-plated) |
| Input level | 0.5Vp-p |
| Input impedance | 75Ω |
| Optical digital (rear) | TOS-link×1 |
| 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 |
| Analog (rear) | RCA pin×1 pair (gold-plated) |
| Input impedance | 24kΩ |
| Input sensitivity | 130mV |
| Bluetooth® | |
| Bluetooth® version | 4.0 |
| Output class | Class2 (Range: approx. 33ft/10m) |
| Supported profiles | A2DP, AVRCP |
| Content protection | SCMS-T |
| Supported codec | LDAC™, Qualcomm® aptX™ HD, aptX™, AAC, SBC |
| No. of paired device | maximum 8 devices |
| Audio outputs | |
| XLR balanced | XLR×1 pair (gold-plated) |
| Output level | Fixed (0dB), fixed (+6dB), variable, output off (selectable) |
| Maximum output leve | 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×1 pair (gold-plated) |
| Output level | Fixed (0dB), fixed (+6dB), variable, output off (selectable) |
| Maximum output leve | 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 | 1/4” (6.3mm) TRS stereo jacks×2 (gold-plated) |
| Polarity (balanced) | Tip: HOT, Ring: COLD, Sleeve: NC (GND) |
| Polarity (unbalanced) | Tip: L, Ring: R, Sleeve: GND |
| Connector 2 | 4.4mm 5-pole Pentaconn×1 (gold-plated) |
| Polarity (balanced) | Tip: L+, Ring1: L-, Ring2: R+, Ring3: R-, Sleeve: GND |
| Maximum output | |
| Balanced | 700mW + 700mW (into 32Ω) |
| Unbalanced | 500mW + 500mW (into 32Ω×1) 350mW + 350mW(into 32Ω×2) |
| Active ground | 500mW + 500mW (into 32Ω) |
| Supported impedances | 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 | 10 to 80,000 Hz (+1/-3 dB, 192kHz PCM input, RCA output, digital filter off) |
| Total harmonic distortion | 0.002% or less (192kHz PCM input, RCA output, digital filter off) |
| S/N ratio | 110dB or higher (192kHz PCM input, RCA output, digital filter off) |
| Power supply | |
| US/Canada | AC 120V 60Hz |
| UK/Europe | AC 220 to 240V 50Hz |
| Power consumption | 18W (0.4W in standby) |
| dimensions (including protrusions) | 290(W)×84.5(H)×248.7(D) mm / 11.4”(W)×3.3”(H)×9.8”(D) |
| Weight | 4.2kg / 9.3lbs |
TEAC CG10M Master Clock Generator
Since the temperature has a huge effect on the accuracy of the crystal oscillator, minimizing temperature changes and maintaining it at an ideal level are extremely important in order to generate an accurate clock signal. The CG-10M-A employs an innovative oven-controlled crystal oscillator, the TEAC Reference OCXO to reduce oscillation frequency fluctuations caused by temperature changes.
Thanks to the TEAC Reference OCXO, the CG-10M-A delivers an ultra-high-precision 10MHz clock signal – within ±3 ppb of frequency temperature characteristics and within ±0.1 ppm of frequency precision – to USB DACs and digital players. A unique laser-engraved serial number and the TEAC Reference OCXO logo on every OCXC case is proof of the rigorous quality inspection undertaken during the manufacturing process.
ppm=10-6, ppb=10-９
Frequency temperature characteristics: A value of frequency fluctuation caused by temperature change
Frequency precision: An actual frequency range
Four gold-plated BNC connectors (50 ohms) are provided to deliver clock signals to multiple devices. Up to four devices that support a 10MHz input may be connected simultaneously, including USB DACs, network players and SA-CD players.
Independent and isolated circuit design
Each circuit in the CG-10M-A – from the power supply section to the buffer-amp at the output stage, – is completely isolated to prevent cross-interference when multiple devices are connected to the BNC connectors.
By incorporating a buffer-amp into each circuit, no degradation of the signal waveform occurs when the generated clock signal is shared by several devices.
TEAC CG10M Master Clock Generator Specification
| Clock Outputs | |
| Connectors | BNC×４ (gold-plated) |
| Output Sampling Frequency | 10MHz |
| Output Impedance | 50Ω |
| Output Level | 0.5Vrms (sine wave) |
| OCXO (Crystal Oscillator) | |
| Clock stabilization time | 2 minutes |
| Frequency temperature characteristics | within ± 3ppb (when shipped new) |
| Frequency precision | within ± 0.1ppm (when shipped new) |
| Power | |
| US/Canada | AC 120V, 60Hz |
| UK/Europe | AC 220-240V, 50Hz |
| Power Consumption | |
| warming up | |
| US/Canada | 15.4W |
| UK/Europe | 15.8W |
| stable | |
| US/Canada | 10.0W |
| UK/Europe | 10.8W |
| Dimensions | 290(W)×84.5(H)×248.7(D)mm / 11.4”(W)×3.3”(H)×9.8”(D) |
| Weight | 3.6kg / 7.9 lbs. |
| Operating Temperature | +5˚C to +35˚C |
| Operating humidity range | 5% to 85% (no condensation) |
| Storage Temerature | -20˚C to +55˚C |
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