Description

The Unico CDDue brings Unison Research right into the popular and versatile digital audio world.
Not just a CD player, the Unico CDDue combines a high-level DAC with a top-end CD mechanism. It’s feature-rich, flexible and customizable to the listener’s preference. A variety of external sources can be connected to the Unico CDDue, including a laptop or computer for playing all known audio formats – including DSD – via USB.

Specifications

Digital Inputs

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
Resolution: 16 to 32 bits

1 x S/PDIF
Sensitivity: 0.5Vpp on 75 Ohms
Sampling frequencies: 44.1, 48, 88.2, 96, 176.4, 192
DSD64 (DoP)
Resolution: 16 to 24 bits

1x AES/EBU
Sensitivity: 2Vpp on 110 Ohms
Sampling frequencies: 44.1, 48, 88.2, 96, 176.4, 192
DSD64 (DoP)
Resolution: 16 to 24 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 bitsDigital Output

1x  S/PDIF
Output voltage: 0.5Vpp on 75 Ohms

1x  AES/EBU
Output voltage: 2Vpp on 110 Ohms

1x Toslink™

Transport
8829CD-KHM DVD-Loader , Only audio CD

Display
128 X 64 White OLED graphic display , (can be turned off)

Digital to Analogue Stage

DAC:
ESS Sabre ES9018K2M with jitter eliminator
SNR: 128dB (0dBFS, 1kHz, 192kHz, “A”
weighted)
THD+N: 0.0003% (0dBFS, 1kHZ, 20Hz-20kHZ)
Timing: low phase noise, high precision crystal
oscillators

IV converter:
AD8597/AD8599 ultralow distortion, ultralow noise, use high-quality components like wima capacitor and wishay resistorOutput Audio Stage

Number of channels: 2
Output stage:
Duble Triode, pure class A differential Totem-pole
Valve complement:
4 x 12AX7/ECC83

Output audio connectors:
1 x RCA stereo
1 x XLR stereo

Optional buffer:
AD8597/AD8599 output buffer can be activated
by remote control normally bypassed by relay

General Specification

Remote control:
1 x Infrared  in wood and metal

Disc Formats:
CD Audio

Weights & Dimensions

Power consumption:    100W max

Dimension:        45cm x 38cm x 13cm

Net weight:        10Kg

 

Reviews

Not only can the CD Due spin your CD collection, it can be used as an external DAC and also features Bluetooth streaming..

The Unico CD Due is the successor to the CDE and being part of the Unico range, uses Unison Research’s trademark hybrid valve design, combing valve technology with solid state devices to enhance the power on offer. The CD Due has been introduced as the company’s flagship source component and is designed to complement the recently reviewed (and extremely likeable) Unico 150 amplifier.

You’ll find a wealth of connections around the back: USB, S/PDIF, AES/EBU and Toslink, so a number of digitial sources can be fed through the ESS Sabre DAC chip found under the hood. The USB input is capable of supporting hi-res audio up to 32-bit/384kHz and DSD 11.2MHz, while the other digital inputs can handle 24-bit/192kHz resolutions. The built-in Bluetooth is of the higher quality aptX variety and the drawer-loading CD mechanism is housed in a thick metal cover to reduce outside interference. Its four ECC83 valves are arranged in a “totem-pole” style to help reduce power supply noise interference, while the rest of the internal circuitry uses short signal paths in a bid to increase performance.