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UD-507 DAC, Preamp, Headphone Amp
$2,199.00 USDFeatures
22.5MHz DSD and 384kHz/32bit PCM playback as USB DAC
Preamplifier with 5 digital inputs (USB Type-B (rear), USB Type-C (front), Coaxial, Optical, Bluetooth) and 2 analog inputs (RCA, XLR)
Full MQA decoder, supporting all digital inputs except Bluetooth
“RDOT-NEO” (Refined Digital Output Technology NEO) up-conversion function (2xFs/4xFs/8xFs)
Bluetooth receiver supporting high quality audio codecs including LDAC and aptXTM HD
Proprietary “TEAC-HCLD2” output buffer circuit for powerful current transmission
“TEAC-QVCS” high-resolution analog preamplifier circuit
What's in the Box?
Warranty
A part of the TEAC's 500 Reference series, the TEAC UD-507 DAC, Preamp, Headphone Amp combines the functionality of three separate units into a single chassis for an unparalleled high-resolution listening experience. The new TEAC UD-507 has been completely redesigned embracing the high-end 700 series design concept in a compact A4 size package. It's got everything an audiophile would need: High-quality affordable DAC, features for high-resolution audio, wired and wirelessly, a fully-balanced dual mono circuit headphone amplifier, and a preamp with multiple analog inputs and digital inputs. The TEAC UD-507 is equipped with TEAC's proprietary TRDD5 Discrete DAC that delivers a clear soundstage and accurate imaging for an immersive musical listening experience. Let the TEAC UD-507 DAC, Preamp, Headphone Amp serve as the ultimate all-in-one high-performance component you need to elevate your home audio system setup.
Dragon Cable Recommendation: We recommend pairing the TEAC UD-507 DAC, Preamp, Headphone Amp with the Silver Dragon Interconnect Cable with XLR and RCA connectors for audio device linking. Sold in pairs, our interconnect cables offer a remarkable solution where noise isolation is key. Our Silver Dragon USB Cable will deliver seamless digital transmission between your source device and the TEAC UD-507. For connecting an external master clock, we recommend our Silver Dragon Coax Digital Cable with RCA connectors. You'll get the best possible digital transmission when timing matters the most. To efficiently power the unit, our Black Dragon Power Cable will do the trick. Designed to be dead quiet and reject all EMI and RFI interference, the Black Dragon Power Cable will work perfectly with the TEAC UD-507. Lastly, the Silver Dragon Network Cable will ensure a stable ethernet connection for music streaming and data transmission. The solid- core silver conductors in the cable provide high speed, low latency, and low jitter-perfect bit rate communication between audio components.
Space-Saving Compact Design
The TEAC UD-507 DAC, Preamp, Headphone Amp features an all-new chassis design with a 2.8mm thick top plate and a transformer suspended from the base plate in a floating structure to minimize and prevent internal vibrations. The structure is designed to reduce the number of screws used to secure the board to prevent vibration from being transmitted to the board. A new mechanism, TEAC's Stainless Feet v2 has a gap between the bottom plate and the foot to control vibrations that affect sound quality. At around 3.3" tall and slightly wider than a piece of paper at 11.4" the TEAC UD-507 is a modular unit that can sit on a bookshelf, fit in an audio system rack, and can be easily moved at only 10.8 lbs in weight. The TEAC UD-507 comes with a battery-operated remote control allowing freedom of movement away from the unit to adjust the volume, skip tracks, and more.
The TEAC UD-507 features many analog and digital audio inputs (balanced inputs, unbalanced inputs) as well as several outputs for headphone listening, streaming, device interconnecting, and more. Swapping between multiple headphones is easy with a 6.3mm TRS stereo jack, 4-pin XLR connector, and 4.4mm balanced headphone output. Use the USB Type-C port on the unit's front panel to connect a smartphone or tablet for music streaming and data transmission. In addition to 44.1kHz and 48kHz internal clocks, a 10MHz external clock can be added to the UD-507 using the external clock input on the rear panel. See the specifications section for a full list of analog/digital inputs and outputs.
Advanced Technology for a Highly Musical Sound
The TEAC UD-507 DAC, Preamp, Headphone Amp is equipped with TEAC's proprietary TRDD5 Discrete DAC that delivers a highly musical sound. This new DAC offers a clear soundstage and accurate imaging for a truly immersive listening experience where you can discover the breadth and articulation of your favorite artists that you never noticed before.
This Discrete DAC, developed in-house, incorporates a proprietary algorithm that processes all digital signals input into the UD-507 at 64-bit/52Fs by the delta-modulator in the FPGA and converts them to analog signals by 16 elements per channel. The DSD signal is processed directly, while the PCM signal is converted to a 1-bit signal by a delta-sigma modulator before being output as a high-quality analog signal. The D/A converter section is independent of the left and right channels preventing interference between L/R signals and reproduces music with a spacious and three-dimensional soundstage.
TEAC has implemented TEAC-HCLD2 output buffer circuits to increase the current transfer capabilities of the UD-507's integrated amplifier and preamplifier. These buffer circuits are enhanced versions of TEAC's HCLD (High Current Line Driver) circuits. Each channel has a positive and negative dual circuit structure with high-current diamond buffer amplifiers being used as line drivers. By increasing the current handling capability, the TEAC UD-507 can transmit the dynamics of audio signals without any loss or degradation.
An upsampling function on the TEAC UD-507 uses RDOT-NEO (Refined Digital Output Technology NEO) to smoothly augment PCM digital audio signals and upconvert their sampling frequencies 2,4, or 8 times. This technology was developed to enable reproduction and playback of frequencies higher than 20kHz that are lost by 44.1kHz/48kHz digital signals. Two large toroidal core transformers—one for analog and digital processing boards—are separated to avoid mutual interference and maintain the purity of the analog signal.
Lastly, Bulk Pet USB Transfer Technology enables stable data transmission when using the USB ports on the TEAC UD-507 to transmit large amounts of digital data from high-resolution audio sources. Since changes in computer load conditions can also affect audio quality, you can select from four preset transmission modes to choose the preferred audio quality.
Fully Balanced Dual Monaural Headphone Amplifier
The TEAC UD-507 DAC, Preamp, Headphone Amp is equipped with a dedicated headphone amplifier that uses four diamond buffer circuits, one positive and negative circuit on each channel, to allow connection of balanced headphones. Compared to the previous model, the maximum output power has been greatly improved by strengthening the power supply, resulting in a generous driving power of 1,200mW + 1,200mW (balanced output at 100 ohm load), which is comparable to a dedicated headphone amplifier without DAC. The power amplifier gain can be switched between 3 positions (Low/Mid/High) to fine-tune the output to best match the sensitivity and impedance of the headphones. Users can easily drive high-impedance headphones, including those upwards of 600 ohms.
High-Quality Preamplifier with Multiple Analog/Digital Inputs
The TEAC UD-507 DAC, Preamp, Headphone Amp incorporates the TEAC-QVCS (Quad Volume Control System) high precision analog volume attenuator and the powerful TEAC-HCLD2 high current line buffer circuit. The QVCS technology uses a variable gain controller with four independent circuits for left, right, positive, and negative to minimize the signal path and prevent audio signal degradation due to signal line routing. It also provides fine volume control in 0.5dB increments so you can set the volume level that best suits your audio system and headphones.
With five digital inputs and two analog inputs (unbalanced and balanced), a wide variety of devices can be connected to the TEAC UD-507. The unit has two digital audio inputs each for coaxial and optical digital, as well as RCA and XLR analog inputs, allowing it to be used as not only a USB DAC but also a high-quality analog preamplifier.
Bluetooth, Multipoint Connection, and Support for Hi-Res Audio
As if the TEAC UD-507 DAC, Preamp, Headphone Amp isn't already enticing enough, the unit is equipped with Bluetooth and a multipoint connection for endless hi-fi playback possibilities. Users can wirelessly connect two devices at the same time and seamlessly switch between them for listening. Jump from a smartphone to a tablet and back to the smartphone without ever having to disconnect one of the devices. The UD-507 supports LDAC and LHDC codecs, capable of transmitting high-resolution audio data (96kHz/24-bit), as well as Qualcomm aptX HD, which is capable of transmitting at 48kHz/24-bit. The unit also supports codecs such as AAC, Qualcomm aptX, and SBC for high-quality wireless playback from smartphones and DAPs (Digital Audio Players.) Lastly, the TEAC UD-507 has a MQA full decoder that enables playback at the same quality level as studio monitors. Playback of MQA CDs is possible by connecting the digital output of a CD player to the UD-507.
The TEAC UD-507 supports TEAC's free dedicated software, TEAC HR Audio Player, which easily plays 22.5MHz DSD and 384kHz/32-bit PCM from Windows and Macintosh computers. Compatible with most TEAC audio products, users can transmit digital audio data through a USB cable connected to the UD-507.
TEAC: Crafting Sound Perfection
TEAC, a renowned audio electronics company based out of Japan, has been crafting hi-fi gear for discerning audiophiles, music lovers, and audio professionals for over 70 years. Their range includes high-quality phono stages for vinyl enthusiasts, robust stereo power amplifiers for demanding audiophiles, and precision-engineered turntables that pay homage to analog audio, including the popular manual-belt drive turntables in the TEAC TN series. Their dedication to analog formats extends to their high-quality cassette decks and tape decks, preserving a legacy of audio recording. For digital music lovers, TEAC has a collection of network players and streamers, exemplified by their sophisticated UD-701N and UD-505-X models. The company's commitment to CD playback is evident in their meticulously crafted CD transports like the TEAC PD-505T, while the CG-10M master clock generator showcases their attention to timing precision in digital audio. TEAC’s VRDS-701 embodies its expertise in high-end CD players, incorporating its proprietary VRDS mechanism. For those seeking compact solutions, TEAC offers desktop audio amplifiers that don’t compromise sound quality. Their range of stereo amplifiers caters to the various power requirements and audiophile preferences while their collection of subwoofers perfectly complements the speaker output of any home audio system. This diverse product range demonstrates TEAC's dedication to providing comprehensive audio solutions that bridge traditional and modern audio technologies.
What's in the Box?
- Power cord
- Remote control (RC-1334)
- AAA Batteries for remote control × 2
- feet cushions × 3
- Owner's Manual (with warranty)
Features:
- Highly musical discrete DAC
- Fully-balanced dual monoaural headphone amplifier
- High-quality preamplifier with multiple analog/digital inputs
- Full-stage dual monoaural/balanced circuit configuration
- 22.5MHz DSD and 384kHz/32bit PCM playback as USB DAC
- Full MQA decoder, supporting all digital inputs except Bluetooth®
- “RDOT-NEO” up-conversion function (2xFs/4xFs/8xFs)
- Bluetooth® receiver supporting high quality audio codecs including LDAC and aptX™ HD
- Proprietary “TEAC-HCLD2” output buffer circuit for powerful current transmission
- "TEAC-QVCS" high-resolution analog preamplifier circuit
FAQ
How does the TEAC UD-507 perform as a DAC (Digital-to-Analog Converter)?
The TEAC UD-507 DAC, Preamp, Headphone Amp features TEAC's TRDD5 Discrete DAC equipped to handle DSD and PCM signals. This DAC delivers a highly musical sound with a clear soundstage and accurate imaging for an immersive listening experience.
Can the TEAC UD-507 be used as a standalone preamp for a speaker-based system?
Yes, the TEAC UD-507 can be used as a standalone stereo preamplifier or standalone headphone amplifier for headphone and speaker playback.
Does the TEAC UD-507 support high-resolution audio formats like DSD and PCM?
Yes, the TEAC UD-507 DAC, Preamp, Headphone Amp can support high-resolution audio formats like PCM, DSD, LDAC, LHDC, and Qualcomm aptX HD.
How well does the TEAC UD-507 drive different types of headphones?
The TEAC UD-507 DAC, Preamp, Headphone Amp is equipped with a powerful headphone amplifier capable of driving a range of headphones, even high-impedance headphones with upwards of 600 ohms. The unit has a power amplifier gain that can be switched between three positions, low, mid, and high, to fine-tune output to match the sensitivity and impedance of headphones.
| Parameter | Specification |
|---|---|
| Physical Specifications | |
| Dimensions | 290(W)×85(H)×249 (D) mm / 11.4"(W)×3.3"(H)×9.8"(D) |
| Weight | 4.9kg / 10.8lbs |
| Technical Specifications - DAC Section | |
| USB DAC | In-house designed Discrete DAC TRDD5 |
| Up-conversion | up to 384kHz/32-bit PCM, 22.5MHz DSD |
| Supported Formats - USB Input | |
| PCM | 16/24/32 bit 44.1k/48k/88.2k/96k/176.4k/192k/352.8k/384k Hz |
| DSD | 2.8M/5.6M/11.2M/22.5M Hz |
| Supported Formats - Coaxial/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) |
| Audio Input Specifications - Digital | |
| USB | USB Type-C port × 1, USB Type-B port × 1 USB version 2.0, Asynchronous mode transfer, Bulk Pet 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 |
| Audio Input Specifications - Analog | |
| Analog (Balanced) | XLR ×1 pair (gold-plated) Input impedance: 50kΩ, Input sensitivity: 5Vrms |
| Analog (Unbalanced) | RCA pin ×1 pair (gold-plated) Input impedance: 24kΩ, Input sensitivity: 2.5Vrms |
| Bluetooth Specifications | |
| Bluetooth Version | 4.2 Output class: Class2 (Range: approx. 33ft/10m) |
| Bluetooth Profiles | A2DP, AVRCP Content protection: SCMS-T |
| Bluetooth Codecs | LDAC™, LHDC, Qualcomm aptX™ HD, aptX™, AAC, SBC |
| Bluetooth Connectivity | No. of paired devices: maximum 8 No. of multipoint connection devices: maximum 2 |
| Audio Output Specifications | |
| XLR Balanced | XLR ×1 pair (gold-plated) Maximum output level (1kHz, full scale, into 10kΩ): 0dB setting: 2.0Vrms, +6dB setting: 4.0Vrms Output impedance: 40Ω |
| RCA Unbalanced | RCA pin ×1 pair (gold-plated) Maximum output level (1kHz, full scale, into 10kΩ): 0dB setting: 2.0Vrms Output impedance: 20Ω |
| Headphone Output Specifications | |
| Connector 1 | 1/4" (6.3mm) TRS stereo jacks × 1 (gold-plated) |
| Connector 2 | XLR 4pin jack ×1 (gold-plated) |
| Connector 3 | 4.4mm 5-pole Pentaconn jack ×1 (gold-plated) |
| Maximum Output | Balanced: 1200mW + 1200mW (into 100Ω) Active Ground: 900mW + 900mW (into 32Ω) Unbalanced: 900mW + 900mW (into 32Ω) |
| Supported Impedances | 16 to 600Ω |
| Clock & External Control Specifications | |
| External Clock Input | BNC connector (gold-plated) Input frequency: 10MHz, Input impedance: 50Ω Input level: Rectangle wave (TTL levels), Sine wave (0.5 to 1.0 Vrms) |
| 12V Trigger Out | 3.5mm Monaural Mini jack × 1 Output level: 12V, Max. current supply: 100mA |
| Audio Performance Specifications | |
| Frequency Response | 5Hz to 70kHz (+1/–6 dB) (192kHz/24bit PCM input, RCA output, DAC mode MULTIBIT) |
| Total Harmonic Distortion | 0.01% or less (1kHz, LPF: 20Hz to 20kHz) |
| S/N Ratio | 105dB or higher (A-weight, 1kHz) |
| Power Specifications | |
| Power Supply | US/Canada: AC 120V 60Hz UK/Europe: AC 220 to 240V 50Hz |
| Power Consumption | 18W (0.4W in standby) |