NAD C390DD DAC amplifier


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NAD C390DD digital DAC amplifier

The NAD C390DD digital DAC amplifier is unique in the marketplace as it combines a fully digital pre and power amplifier with high resolution DAC and upgradable inputs all within one compact but powerful unit. With no analogue stages in the signal path, all traditional distortion, phase shift and noise problems are eliminated.

A referance standard 35 bit DAC with 108MHz clock forms the basis of the excellent sound quality of the C390DD - coupled to an all digital pre-amplifier and power amplifier of 150W output power, the realism of music reproduced has to be heard to be believed.

All digital inputs are provided on three upgradable, removable modules. There are three bays to accept up to three modules, the standard module factory fitted to the C390DD is  the DDUSB 1 which allows connection of USB sources. The two remaining slots can be fitted with a 3D HDMI module featuring 3 in 1out to allow switching of your video sources to a flat panel TV or projector. These HDMI connections are 3 D compatible, but do not offer surround sound decoding or video processing - which is ideal for the user when stereo sound quality comes before movie surround sound.

The remaining bay can be fitted with a very high performance phono module which accepts the output of both MM and MC cartridges.

The following are the C 390DD's capabilities with respect to USB mass storage device playability.
    Digital USB Front/Digital USB Back (USB Type A): Supports playback of MP3, WMA and FLAC files MP3/WMA: 48 kHz FLAC: 24 bit/48 kHz    Computer (USB Type B): 24 bit/96 kHz PCM content from PC or MAC    FAT12/16 root directory up to 256 files (short names)    FAT12/16/32 up to 65535 files (short names) per directory    FAT file system limited to 2TB    File and directory names limited to 64 characters    Up to 16 maximum level of directories    Supports USB version 1.1

C 390DD Audio Resolution chart.
    USB Type A - 24 bit/48 kHz    USB Type B - 24 bit/96 kHz    Optical - 24 bit/192 kHz    Digital Coax - 24 bit/192 kHz    Optional HDMI DD HDMI-1 - 24 bit/192 kHz
 NAD USB Audio Driver for Windows PCs (XP, Vista and 7)
In order to stream your computer audio, ensure that the Sound or Audio device setting of your computer is set to "NAD USB Audio". Download the "NAD USB Audio Driver" (click on the downloads tab on this page) and install this driver to your computer by following the instructions provided. Minimum system requirement: Microsoft Windows XP Service Pack 2 or higher, Microsoft Windows 7.
Note: Any drivers previously loaded must be uninstalled prior to installing this driverFOR MAC USERS
Minimum Mac OS X Snow Leopard (version 10.6) and later versions include USB Audio 2.0 drivers and therefore it is not necessary to install the NAD USB 2.0 Audio driver. Ensure the Sound device of your Mac is set to "NAD USB Audio 2.0"

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Providing your item is in stock, the order is usually dispatched within 24 hours. Please remember that postage and packing is completely free for orders over £50*. Out of stock items will be dispatched as soon as they become available, out of stock items can take between 4 to 21 days for dispatch.

Deliveries usually take 1-3 working days. The majority of orders are sent via our couriers'; Interlink Express on a next-day-delivery service. Smaller, low value or light-weight items are normally posted using Royal Mail Recorded or Royal Mail Special Delivery.

Once your product has been dispatched, you will be notified via email and sent a unique consignment number, you can use this number at to check the status of your delivery. If you have provided a mobile telephone number, Interlink's Predict service will notify you by text (and email) of a one-hour delivery window. If the window they suggest is inconvenient, you can change the date of delivery to a later one via text or email.

*We ship free of charge to mainland UK addresses, excluding the Scottish Highlands or 'Out-Of-Reach' Scottish locations. Please consult the post-codes below to see if your location falls within this category. If you are still unsure, please contact us on 01432 354921. We also ship to Northern Ireland, Channel Islands, Scilly Isles, Scottish Isles and Scottish Highlands, however delivery to these locations will incur a charge and can only be sent via a 2-day service.

Shipping CostsMainland UK (Next-Day)Offshore/Out-of-reach (2-day)Northern Ireland, Channel Islands, Isle of Man, Scottish Islands, Scilly IslandsRepublic of Ireland (2-day)
Under £50 Orders £7.50 £12.50 £15.00
Over £50 Orders FREE £19.99 £29.99
Surcharge Orders £50.00 £69.99 £79.99
Saturday Delivery £12.99 N/A N/A
Sunday Delivery £12.99 N/A N/A
Saturday by 12 Delivery £35 N/A N/A


Post codes exempt from the free delivery service include:

Scottish Highlands Post Codes: AB30-38, AB41-42, AB44-56, FK17-99, G83, IV1-28, IV30-39, IV52-54, IV63, KW1-14, PA21-33, PA34-40, PH15-26, PH31-41, PH49-50
Islands Post Codes: HS1-9, IV40-51, IV55-56, KA27-28, KW15-17, PA20, PA41-49, PA60-78, PH42-44, ZE1-3
Northern Ireland: All BT postcodes
Channel Islands Post Codes: JE, GY
Scilly Isles Post Codes: TR21, TR22, TR23, TR24, TR25