05 settembre 2015
DIGITAL…HERE WE ARE AGAIN
Unico CD Uno
After introducing the Unico CDDue last year, Unison Research is now confirming its presence in
the world of digital audio with the new CDUno.
The Unico CDUno is a high-specification DAC with integrated CD mechanism that is flexible and
customizable. The CDUno combines Unison Research’s high-end sound quality with the broad
playback possibilities offered by today’s digital audio solutions. The CDUno will allow you to play
back all the music formats and sampling rates currently available on the market.
The UnicoCDUno boasts a wide variety of inputs and outputs. On the back-panel there are
inputs for USB and Toslink ™ cables, and built inside the housing is a Bluetooth™ receiver that
allows for wireless streaming from compatible devices.
The audio stage uses one 12AU7//ECC82 double triode, operating in pure class A, followed by
a solid state discrete buffer still operating in class A for a low impedance output and ideal audio
behavior.
Aesthetically the CDUno, like the CDDue, differs from existing Unico products with its new three-
fold faceplate, white LEDs and white display. This same aesthetic will pass over to the new Unico
90 and Unico 150 amplifiers, which are designed to be perfect matches for the CDUno and
CDDue.
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05 settembre 2015
Features
The UnicoCDUno is a simple to use but feature-rich player.
The new 128 x 64 resolution graphic display uses white OLED technology for excellent visibility
in all lighting conditions and from any angle. The “Display” function on the remote control
allows you to turn off the display so you can enjoy listening without any illumination. The display
shows the most important information in large fonts, and additional information in smaller fonts
The flexibility of the CDUno is best expressed by discussing each input as well as the overall
design.
USB
The USB input of the CDUno uses a latest-generation D/A converter to manage signals up to
384kHz PCM and 11,2896MHz DSD, which effectively covers you for almost every format and
sampling rate currently available.
Bluetooth
The small screen on the back panel of the CDUno masks the built-in aptX Bluetooth aerial that
allows for music playback from compatible smartphones, tablets and computers. Set-up is quick
and easy with any compatible device.
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05 settembre 2015
Digital inputs
Coaxial S / PDIF, balanced AES / EBU and optical Toslink
You can connect the CDUno external digital sources such as satellite receivers, digital recorders,
digital mixers, etc.) There are three digital inputs on the panel .These inputs accept up to
192kHz and 24 bit (96 kHz and 24 bit via the optical input). Note that the coaxial inputs accepts
balanced and also transfer signals encoded DSD64 DoP.
CD
The reading mechanism is a sleek drawer "slim" design and can only read audio CDs. The
mechanism is enclosed and shielded by a thick metal cover.
Digital outputs
The CDUno can even be connected to another external DAC via the coaxial S/PDIF output.
DAC board and features
The CDUno has been designed to separate the digital section
from the analogue one.
The DAC section contains 8 stabilized power supply rails to
ensure a clean and distinct delivery to each device on the
board. Additional stabilisers are employed to ensure optimal
sensitivity from the power supply; the first stabiliser acts as a
filter, and the second removes any residual noise. All this has
been done to ensure the DAC can operate in the best
conditions possible.
The current-voltage converters NE5532AD are "very-low
distortion" and use quality components including Wima
capacitors and Vishay resistors.
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05 settembre 2015
The use of an FPGA allows for faster response times in the management of the digital data, as
well as specialized functionality and greater power when compared to DSP processors.
The ESS Sabre DAC ES9018K2M with jitter eliminator offers an exceptional signal-to-noise ratio
of 125 dB and a low distortion 0.0003%. The timing system is given by a quartz oscillator with
high precision and low phase noise.
It is possible to select from three different types of digital filters:
F1 filter high slope and linear phase
F2 filter high slope and minimum phase
F3 filter low slope and linear phase
The three filters have characteristics which favour certain types of sound (temporal coherence,
phase coherence or impulse response) and this allows the user to select the digital filter that best
suits the installation, registration and your tastes.
You can also reverse the absolute phase of reproduction in the CDUno menu.
One more function is the capacity to bypass tube section for have a “ solid-state” sound
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05 settembre 2015
Valves Output stage :
The tube stage uses two stabilizers, one for the anodic supply and one for the filaments.
The path of the masses of signal and power
have been designed in a particular way so
they are combined in a “stellar-like”
connection in the center of the board. From
this point you see the mass connection to the
DAC board as a way to reduce noise and
disturbances.
The CDUno has been developed through
both extensive listening sessions and a
meticulous R&D process. The result is an
innovative product that accommodates the
world of digital audio and delivers it to your
system with a rich valve sound.
The audio stage is designed around a single 12AU7//ECC82 double triode operating in pure
class A, defining the sonic performance of the unit, followed by a solid state discrete buffer still
operating in class A for a low impedance output and ideal audio behaviour. The totem pole
circuit is also used in the One and 150 in the Only 90 of the same line of CDdue.
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05 settembre 2015
Technical Specification
Digital Input: 1 x USB : Standard: USB 2.0 Audio Class
frequencies: 44.1, 48, 88.2, 96, 176.4, 192, 352.8, 384,
DSD64, DSD128, DSD256 Ready
Resolution: 16 to 32 bits
1x Toslink™: Sampling frequencies: 44.1, 48, 88.2, 96 (176.4 and
DSD64 DoP with high efficiency transmitters)
Resolution: 16 to 24 bits
1 x Bluetooth™ Receiver: Standard: BT 3.0
Profiles: A2DP, SSP (HID supported with Android
smartphones through SPP)
Sampling frequencies: 44.1kHz, 48kHz
Resolution: 16 bits
Digital Output: 1x S/PDIF: Output voltage: 0.5Vpp on 75 Ohms
Transport: 8829CD-KHM DVD-Loader , Only audio CD
Display: 128 X 64 White OLED graphic display
Digital to Audio stage: DAC: ESS Sabre ES9018K2M with jitter eliminator
SNR: 125dB (0dBFS, 1kHz, 192kHz, “A” weighted)
THD+N: 0.0003% (0dBFS, 1kHZ, 20Hz-20kHZ)
Timing: low phase noise, high precision crystal
oscillators
IV converter: NE5532AD high-performance, very low noise, use
high-quality components like wima capacitor and
wishay resistor
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05 settembre 2015
Output Audio stage:
channel: 2
Output stage: Duble Triode, pure class A
Valve complement: 1 x 12AU7/ECC82
Output audio connectors: 1 x RCA stereo
Optional buffer: NE5532AD output buffer that bypass tube stage, can
be activated by remote control
General Specification:
Remote control: 1 x Infrared in wood and metal
Disc Formats: CD Audio
Power consumption: 100W max
Dimension: 45cm x 38cm x 13cm
Net weight: 10Kg
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