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Kronos AV
Kronos AV

Unison Research Unico CD Duo CD Player
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  • Regular price £3,499.00
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The CD Due is both a High end DAC and a CD player that has been developed though extensive listening sessions and meticulous R&D. It combines Unison Research’s high end sound quality with digital audio inputs to give a truly versatile solution to anyone wanting a powerful but simple to use system.

The Unico CD Due features USB, S/PDIF, AES/EBU and Toslink inputs supporting 24-bit/192kHz (24-bit/96kHz via the optical input). AptX Bluetooth is also included allowing for music playback from any compatible Smartphone, tablet or computer.

On the rear of the CD Due Coaxial S/PDIF, balanced AES/EBU and optical Toslink outputs are available as well as unbalanced RCA and balanced XLR.

The CD drive comprises of a sleek design encased in a thick metal shield isolating it from the rest of the circuitry while remaining aesthetically pleasing.

In true Unison Research fashion the output stage utilizes four ECC83 valves in the innovative Double Triode, pure class A differential totem-pole configuration (also found in the Unico 150 and Unico 90 Amplifiers). This reduces the possibility of noise from the power supply and gives the triode sound with the drive of a cathode follower.

With the use of an Apple lightning to USB connector (not included) you can plug your iPhone/iPod/iPad directly into the CD Due's DAC and play your hi-res music files straight from your device.

The new 128 x 64 graphic display utilizes white OLED technology giving excellent visibility in all lighting conditions and from all angles. The display will show all the information you need giving you the most important information in large text on the top line with any other information in smaller text on the bottom line. The display can be turned off using the ‘Display’ function on the CD Due’s remote allowing for listening without any illumination.

The Unico CD Due is available with a premium sand-blasted Silver fascia (black fascia available to special order).

  • High-quality CD and DAC Player 
  • Back-lit OLED display for information feedback
  • Intuitive user interface based around RC3 remote control
  • 4 x ECC83 valve output stage
  • ESS Sabre DAC
  • aptX Bluetooth
  • Connect iPad/iPod/iPhone directly via Lightning to USB cable (not included)
  • Premium sand-blasted Silver finish or Black finish
Unison Research CD Due, Hi-Fi World, July 2016

Hi-Fi World, July 2016

Reviewed By: Martin Pipe
Score: 4/5 Globes
EXCELLENT - Extremely Capable<

Comments of Note:
“Use is easy…”
“It also scores well on the sound quality front if my varied selection of tracks, stored in lossless form to minimise quality loss, is anything to go by. and Britney Spears’ Scream and Shout’ lost none of their urgency and pace and the track’s bassline bounced along nicely. Meanwhile, the saxophone part of Herbie Hancock’s ‘Chameleon’ was given a vividness that allowed it to stand out from the mix – yet without compromising the other elements.”
“…I was able to get this going with ease thanks to the thoroughness of Unison’s instructions…”
“A simple recording of a solo violin performance – Palen’s ‘Light in the fracture’ captured straight to DSD by Blue Coast Records – was bestowed with grace and liveliness. I got a sense of the San Francisco Grace Cathedral recording venue’s acoustic ambience and detailing, such that I could easily pick out the intricacies of the bow sliding on the strings.”
“First into the disc tray was Prince’s ‘Controversy’. The 1981 album’s title track, a blistering slice of funk, was here experienced with a low-end that was tight”
“…there’s a beguiling sound about the Unison Research that marks it out as a truly classy performer.”
“The Unison CD Due is an extremely capable player with an eminently enjoyable sound thanks to its combination of valves and solid-state. Add in a quality DAC and digital filter options and you get a very impressive package for the money.”
“Beautifully-made, well featured and capable of seducing your ears with a smooth and transparent yet detailed presentation. A refined performer.”

Transport: 8829CD-KHM DVD-Loader
Digital Interface: 128 x 64 White OLED Graphic Display
DAC:  ESS Sabre ES9018k2M with Jitter Eliminator 
Signal-to-Noise Ratio:  128dB (0dBFS, 1kHz, “A” weighted) 
I/V Converter:: AD8597/AD8599
Inputs:  USB
aptX Bluetooth 
Sampling Frequencies: 44.1kHz
Output: S/PDIF
RCA Stereo
XLR Stereo
Output Stage: Double Triode, Pure Class A differential Totem-pole 
4x 12AX7/ECC83 Valves
Power Consumption: 100W (max.)
Dimensions: 45 x 13 x 38cm
Weight: 10kg

We are still delivering orders as normal. When your order ships you will still receive tracking details. For UK shipments, Our couriers have procedures in place to ensure deliveries are arriving as quickly & safely as possible. Drivers can now sign for your parcels, however will notify you that they have arrived, in order to ensure you receive your parcel. Signing for the parcel has now been stopped temporally for hygiene reasons. Drivers are also working with customer instructions, so you can ask them to leave the parcel in a safe place (doorstep etc...) if you prefer not to come into direct contact with the driver.

There has been no changes to deliveries with Brexit. All deliveries to the UK mainland, Northern Ireland and the Republic of Ireland are operating as normal. No VAT or charges are applicable. 

Express Deliveries

Express Delivery is FREE on all orders over £50. Express Delivery offers delivery in 24-72 hours from time of purchase. We use premium couriers for this service, mainly DPD & Royal Mail. DPD will offer you a one hour window for delivery to make sure someone is at home, or you can reschedule the delivery if no one is around. 

Standard Deliveries

Here at Kronos AV, we have vast experience with e-commerce sales. Making sure that your parcel arrives undamaged is a huge priority for us. That’s why at Kronos AV, we only use premium couriers for all our orders. All our parcels are shipped with DPD or Royal Mail and are always sent Signed For to make sure it gets to the right person. 

If for any reason your parcel does arrived damaged, please get in touch, and we will be happy to get everything resolved for you. We are always on hand to help!


Delivery is FREE on all orders over £50. In order to offer FREE delivery to UK customers, we use several premium couriers to ensure your delivery arrives safe.

Most large orders (over 2kg) ship using DPD or DHL courier and smaller orders (under 2kg) by Royal Mail signed for services.

The most appropriate courier will be chosen for the items ordered to ensure the quickest possible delivery.

We can offer very generous trade in offers across the majority of our product range. 

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If you have any question, please feel free to call us on 03435236169 or email