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TEAC UD-505-X - aukštos klasės USB DAC, ausinių stiprintuvas ir priešstiprintuvas, Palaikomi formatai: PCM iki 768 kHz / 32 bitų, DSD iki 22,5 MHz (DSD512) | Nemokamas Pristatymas
ESS Technology ES9038 Q2M high-performance DAC supports resolutions up to 22.5MHz DSD and 768kHz/32bit PCM
We have employed one DAC chip, which is a crucial component for digital audio, in each of the stereo channels. The ESS Technology ES9038Q2M SABRE32 Reference DAC that we use has a strong reputation in the high-end audio market. Using 32-bit HyperStream® II DAC architecture and Time Domain Jitter Eliminator, which are ESS original technologies, an outstanding dynamic range is realized and linearity is increased in the D/A conversion. As a result, clear and accurate audio playback with superior.
Dual monaural circuit design 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.
This allows the fantastic sense of air that Hi-Res formats possess to be processed and conveyed without any losses.
High-quality wireless audio streaming via Bluetooth®
In addition to conventional SBC and AAC codecs, the UD-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.
Dual onboard clocks for 44.1kHz and 48kHz, and an external clock input
Instead of referencing to an unstable and noisy PC clock during USB audio playback, a more accurate and on-board clock is generated by a high-precision, low phase-noise, audio-grade crystal oscillator for USB asynchronous transfer mode. The UD-505-X accommodates two on-board 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 UD-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, even with music that you are familiar with.
"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.
This can cause sound to drop out and other problems to occur. However, with our new USB transmission technology – dubbed "Bulk Pet" – a fixed amount of data is transmitted constantly, levelling out the processing burden on both devices and contributing to stable data transmission.
Changing the processing burden on the computer directly affects audio quality so users can select the setting they prefer (from four transmission modes).
Seven types of PCM digital filter
Seven types of PCM digital filters are available in this model. This allows you to choose the best filter according to the input file format and music style. Since the filter can be changed with a single operation of the included remote control, you can easily enjoy the differences in the subtle sound nuances of each filter type. The unit can also be used with no enabled filters.
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 UD-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
We employed the TEAC-HCLD 2 for the analog output circuit. This is a further improved version 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, 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.
Discrete circuit design with balanced drive
The UD-505-X's headphone amplifier circuit provides balanced-drive by using the TEAC-HCLD2 circuit, – comprised of four output transistors for each left and right channel – for headphone output. With challenging 600Ω high-impedance headphones for example, the UD-505-X allows you to bring out the potential of these type of headphones.
Pentaconn, a single-plug connector for balanced headphone drive
In addition to the dual conventional 6.3mm (¼") TRS jacks for balanced connection, the UD-505-X employs a 4.4mm 5-pole headphone jack for balanced drive. At the 6.3mm TRS jack, you can enjoy 3 kinds of drive type, unbalanced connection to drive up to 2 sets headphones, and active-ground drive that is effective to improve the silence and present the sensitive sound, as well as balanced connection.
Active-ground drive offers a new headphone drive mode
The active-ground is a new driving mode that employs the principles of balanced connection. It forcefully drives the ground, by lowering the ground level to 0V, providing an ideal ground condition (rather than just connecting to the conventional ground). This means it also suppresses hum noise from the power supply and enhances the purity of silent pauses by lowering the noise floor. Subtle detail, such as the breathing of artists and the textures of sounds, will feel even more convincing.
Spec description
| 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 | ESS Technology ES9038 Q2M ×2 |
| Up-conversion | up to 384kHz/32-bit PCM, 24.5MHz DSD |
| 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 | |
| AC120V, 60Hz | |
| AC220 - 240V, 50/60Hz | |
| 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 | 4.1kg / 9.1lbs |
| Included accessories | Power cord, RCA mini plug adapter cable, remote control(RC-1330), 2 AAA batteries for remote control, 3 feet cushions, Owner's Manual(with warranty) |
Up-conversion table
| Input Frequency | Up-converted Frequency | ||||||
| Coax/Opt | USB | off | 2Fs | 4Fs | 8Fs | DSD256 | DSD512 |
| 32kHz | - | 32kHz | 64kHz | 128kHz | 256kHz | 8MHz | 16MHz |
| 44.1kHz | 44.1kHz | 44.1kHz | 88.2kHz | 176.4kHz | 352.8kHz | 11.2MHz | 22.5MHz |
| 88.2kHz | 88.2kHz | 88.2kHz | 88.2kHz | 176.4kHz | 352.8kHz | 11.2MHz | 22.5MHz |
| 176.4kHz | 176.4kHz | 176.4kHz | 176.4kHz | 176.4kHz | 352.8kHz | 11.2MHz | 22.5MHz |
| - | 352.8kHz | 352.8kHz | 352.8kHz | 352.8kHz | 352.8kHz | 11.2MHz | 22.5MHz |
| - | 705.6kHz | 705.6kHz | 705.6kHz | 705.6kHz | 705.6kHz | 11.2MHz | 22.5MHz |
| 48Hz | 48Hz | 48kHz | 96kHz | 192kHz | 384kHz | 12.2MHz | 24.5MHz |
| 96kHz | 96kHz | 96kHz | 96kHz | 192kHz | 384kHz | 12.2MHz | 24.5MHz |
| 192kHz | 192kHz | 192kHz | 192kHz | 192kHz | 384kHz | 12.2MHz | 24.5MHz |
| - | 384kHz | 384kHz | 384kHz | 384kHz | 384kHz | 12.2MHz | 24.5MHz |
|
- |
768kHz | 768kHz | 768kHz | 768kHz | 768kHz | 12.2MHz | 24.5MHz |
No conversion
* Maximum up-conversion rate is 8Fs.
Comparison with previous models
| UD-505-X | UD-505 | UD-503 | UD-501 | |
| USB DAC | ES9038 Q2M ×2 (L/R) | AK4497 ×2 (L/R) | AK4490 ×2 (L/R) | PCM 1795 ×2 (L/R) |
| Supported DSD formats | 22.5MHz maximum | 22.5MHz maximum | 11.2MHz maximum | 5.6MHz maximum |
| Supported PCM formats | 768kHz/32-bit maximum | 768kHz/32-bit maximum | 384kHz/32-bit maximum | 384kHz/32-bit maximum |
| Up-conversion (Max) | DSD: 24.5MHz (DSD 256, 512) PCM: 384kHz/32-bit (2 fs, 4 fs, 8 fs) |
DSD: 24.5MHz (DSD 256, 512) PCM: 384kHz/32-bit (2 fs, 4 fs, 8 fs) |
DSD: 12.2MHz (DSD 256) PCM: 384kHz/32-bit (2 fs, 4 fs, 8 fs) |
PCM: 192kHz/24-bit (fixed) |
| Dual monaural | Yes | Yes | Yes | Yes |
| Current buffer circuit | TEAC-HCLD2 | TEAC-HCLD | TEAC-HCLD | - |
| TEAC QVCS circuit (High-precision volume) |
Yes | Yes | Yes | - |
| Line/balanced outputs | Yes | Yes | Yes | Yes |
| Line parallel/ unbalanced outputs |
Yes | Yes | Yes | Yes |
| High-precision dual clock | Yes | Yes | Yes | Yes |
| External clock input | Yes | Yes | Yes | - |
| Preamplifier function | Yes | Yes | Yes | - |
| Bulk Pet transmission | Yes | Yes | - | - |
| Line output level switching |
|
|
|
- (Line output on/off selection only when headphones connected) |
| Front digital input | Yes (Combined coaxial/optical mini jack) |
Yes (Combined coaxial/optical mini jack) |
Yes (Combined coaxial/optical mini jack) |
- |
| Analog line inputs | 1 pair (RCA) | 1 pair (RCA) | 1 pair (RCA) | - |
| Bluetooth® receiver | Yes | Yes | - | - |
| Headphone amplifier circuit | Current-strengthening circuit | Current-strengthening circuit | Current-strengthening circuit | Op-amp |
| Headphone output connectors/ drive modes |
4.4mm 5-pole ×1
|
4.4mm 5-pole ×1
|
Standard 6.3mm ×2
|
3.5mm stereo mini ×1
|
| Feet | Stressless Pin-point foot | Pin-point foot | Pin-point foot | Conventional insulated foot |
| Remote control | Yes | Yes | Yes | - |
