TEAC UD-301 USB Audio DAC
Man. Part No.: UD-301
TEAC UD-301 DAC
Dual Monaural Digital-to-Analog Converter
A new standard in high-resolution audio, delivering high performance audio from a desktop component
- A compact (215mm width) digital-to-analog converter (DAC) with USB input
- Compatible with 2.8MHz/5.6MHz DSD native playback and 32bit/192kHz high-resolution sound sources
- Asynchronous transmission mode capability and 192kHz up-conversion option
- Dual monaural design eliminates interference between the left and right channels. Built around twin BurrBrown PCM1795 DAC chips
- Toroidal core power transformer
- XLR balanced output
- The USB DAC can be directly connected to a power amplifier or active speaker and the output level (XLR, RCA) can be set to fixed, adjustable or off.
- By setting the XLR or RCA output level to “Off,” unnecessary circuits (other than those of the headphone amplifier) are isolated, enabling the sound quality of the headphone amplifier to be further enhanced.
- Full metal housing provides both excellent vibration control and a classy look, in a compact size allowing convenient desktop positioning
- 2.8MHz/5.6MHz DSD native playback (via USB input)
- 24bit/192kHz PCM file playback
- Asynchronous mode capability
- 192kHz up-conversion option (with On/Off selection)
- 2 x BurrBrown PCM1795 digital-to-analog converters
- Dual monaural design
- 2 x MUSES8920 operational amplifier units
- Dual monaural CCLC headphone output circuit
- Toroidal core power transformer
- Full metal housing
- 1 x USB input (USB B type)
- 1 x coaxial digital input
- 1 x optical digital input
- 1 x XLR balanced output (Fixed/Adjustable/Off)
- 1 x RCA balanced output (Fixed/Adjustable/Off)
- Headphone output (standard stereo jack)
- Three-pin IEC AC power socket
- Auto Power Save function
Dual monaural design, compatible with high-resolution DSD
Capable of 5.6MHz DSD native playback
The USB input facility allows DSD native playback which converts 5.6MHz DSD files directly into analog signals without needing first to convert it to PCM. It supports both the ASIO2.1 and DoP (DSD over PCM) conversion methods. Using the AI-301DA in conjunction with the TEAC HR Audio Player* high-resolution playback computer software application, anyone can easily explore the world of high-rez digital audio, including 5.6MHz DSD or 32bit/192 kHz PCM files, without having to grapple with complex settings etc.
* TEAC HR Audio Player can be downloaded for free from the TEAC website.
Asynchronous mode-capable USB input
When receiving digital audio signals from a computer via USB cable, the unit can operate in asynchronous mode, controlling the timing of the input signal using the UD-301's internal clock (which is identical to the one used in the UD-501). With asynchronous transmission over USB, signal compromising jitter is effectively eliminated, allowing digital audio signals to be transmitted in a pure, unadulterated state.
Up to 192kHz up-conversion option
When handling digital signals of 96kHz and less, users have the option to upconvert to double or quadruple the original signal sampling frequency. Even when playing back a 44.1kHz sound source (equivalent to CD sound quality) a smoother analog audio signal can be obtained in order to convert to a higher resolution digital signal. Naturally, this up-conversion facility can be switched in or out, according to the user's preference.
Dual monaural design eliminates interference between the left and right channels
In order to process the audio signal from a high-resolution sound source in a purer state, we adopt a dual monaural circuit design whereby each of the left and right channels comprises its own single monaural circuit. This avoids mutual interference between the left and right channels and enables pure stereo playback.
High-performance BurrBrown PCM1795 digital-analog converter
The two internal BurrBrown 1795 digital-to-analog converter units each work on a single channel (left or right) for true dual monaural operation. They are capable of 32-bit processing and so have the capacity to process 5.6MHz DSD data in large quantities, making them indispensible for faithful and accurate playback of high-resolution sound sources.
MUSE operational amplifier enables highest quality analog signal processing
We use these in the analog circuit, they are a vital element in determining the final sound quality. They transform the electrical current output of the D/A converter into a voltage signal. We opted for a dual monaural configuration for the operational amplifiers, employing two MUSES8920 operational amplifier units, one on each of the left and right channels. These devices are made by New Japan Radio and are designed especially for hi-fi audio.
Even the headphone amplifiers used in the CCLC circuits are of dual monaural design
The 100mW + 100mW output (at 32 ohms load) headphone amplifier uses CCLC (Coupling Capacitor Less Circuit) technology. In conventional headphone output circuits, a capacitor is used for output-stage coupling, and so the sound is unavoidably colored. When the capacitor is combined with a high-pass filter this often results in phase lags, or low frequency level degradation. With CCLC the negative impact of capacitors on sound quality is eliminated, providing full low-frequency sound and a responsive headphone listening environment with great spatiality.
Doubles as a no-compromise, high-performance headphone amp
In addition to the dual monaural headphone circuits, there are options to switch off the XLR and RCA outputs on the rear panel. By cutting the power supply and isolating those circuits that are unrelated to the headphone output, the performance of the UD-301's headphone output can be maximized. This feature also makes the headphone amp very easy to use as the volume control for the headphones is completely separate from the output mode (Fixed, Adjustable or Off) on the rear panel.
Toroidal core power transformer provides stable power flow
A high-efficiency toroidal core power transformer with low magnetic flux leakage is used to guarantee the stable operation of the twin left and right D/A converters that are so essential to the UD-301's high-speed signal processing. This transformer provides a stable power supply even in situations where a sudden surge of power is required, such as when starting up at very high volume.
Well-engineered aluminum enclosure, compact proportions
Following on from our development of the 501 series concept (small high-performance audio components that can be fitted on a desktop) we decided, at the outset, that the 301 series would be an even more compact design. Now, the casework has been shrunken to just 215mm wide, allowing greater freedom in positioning the amplifier. External highlights include aluminum panels and a motor-driven volume knob with the tactile feel you'd expect from controls found in high end full-size hi-fi components. At the same time, the solid enclosure underpinned by the metal chassis, is impressively inert, minimizing the effects of vibration on the unit's sound quality.
XLR balanced output
The UD-301 is equipped with an XLR balanced output that can be connected not only to other domestic hi-fi components but also to professional audio equipment. As a highly versatile, high-performance D-A converter, the UD-301 offers a high degree of interoperability with devices ranging from those used by discerning consumers all the way up to those used in the professional domain.
Connectable to a power amp in pre-amp mode
The XLR balanced output and RCA unbalanced outputs on the rear panel can both be set at Fixed, Adjustable or Off. Using the Adjustable setting, the UD-301 can be connected to a power amplifier to create a system with a separate pre amp and power amp or, alternatively, can be directly connected to an active speaker.
|Manufacturer's Part No.||UD-301|
|Connections||Composite In, Digital Coaxial, Digital Optical (TOSLINK), USB, XLR|
|Number of channels||No|
|Number of Decks||No|
|Cd Player Dimensions||No|
|Unit Dimensions||(WxHxD): 215 x 61 x 238 mm|
Finance options* to help you afford the product you want!
If your order value is £389.00 or over you will be given the option to buy on finance when you reach the checkout. We have two finance options available:
Buy Now Pay 6 Months Later
Buy Now Pay 12 Months Later
Please Note: A minimum 10% deposit is payable up front on credit or debit card on all finance orders.
How to Apply
Applying for finance is simple. All you need to do is call us on 0800 634 4484 during opening hours and we will be able to process your order.
Who is the finance agreement with?
The finance agreement is with Hitachi Consumer Credit, one of the largest money lenders in the UK.
*Finance is available to UK applicants 18 years of age or older and subject to status. Finance is not available for business customers. Prices are correct at time of going to press and are subject to change during the term of this offer without notice. Terms and conditions are available on request. Finance agreements are available on orders between £389 and £10,000 (including VAT and shipping). Please ensure you are able to keep up repayments of any finance package taken.
Now Group UK Ltd trading as Exceptional AV operates under a Consumer Credit Licence, No. 560813.
This licence is issued by The Director General of Fair Trading at the Office of Fair Trading in accordance with the Consumer Credit Act 1974.