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The UD-501 is a dedicated Digital-to-Analogue converter designed to process digital signals from a variety of sources, including PCs/Macs, and then output them as analogue signals to an amplifier such as the AI-501DA.
Internally, it employs two 32-bit/192kHz BurrBrown PCM1795 DAC chips (one for each of the stereo channels) with four audiophile-grade MUSES8920 OpAmps (a pair per channel) delivering the analogue output. That output stage is also buffered to ensure a linear signal performance, Being a Dual Mono design there are separate toroidal transformers for each channel (which is why it weighs an incredible 4kg).
The UD-501 is capable of natively handling DSD over USB (2.8/5.6Mhz files) and PCM audio files of up to 32-bit/384kHz resolution, sourced both PCs and Macs, and offers a range of custom filtering options for both DSD and PCM files. What that means in English is that adventurous computer audio fans will get state of the art replay of pretty much any digital signal they care to feed it.
As you'd expect the impressive processing capabilities are partnered by a generous range of inputs: USB, 2 x optical, 2 coaxial, and both balanced (XLR) and unbalanced (RCA) outputs, as well as very high quality headphone stage.
Digital audio inputs - COAXIAL RCA jacks x 2 (0.5 Vp-p/75 ohms PCM data
32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz,
96 kHz, 176.4 kHz, 192 kHz
bit rates 16/24-bit OPTICAL Optical digital connectors x 2
(–24.0 to –14.5 dBm peak)
32 kHz, 44.1 kHz,
48 kHz, 88.2 kHz, 96 kHz,
bit rates 16/24-bit USB Type B connector x 1
(USB 2.0 compliant)
44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz,
176.4 kHz, 192 kHz, 352.8 kHz, 384 kHz
bit rates 16/24/32-bit DSD data
2.8/5.6MHz Analog audio outputs - XLR XLR jacks x 1 pair Output impedance 88 ohms Maximum output level 4.0Vrms (1/full-scale, into 10 kΩ) Frequency range 5Hz - 80kHz (-3dB) S/N ratio 115dB Distortion 0.0015% (1kHz) RCA RCA jacks x 1 pair Output impedance 22 ohms Maximum output level 2.0Vrms (1/full-scale, into 10 kΩ) Frequency range 5Hz - 80kHz (-3dB) S/N ratio 115dB Distortion 0.0015% (1kHz) Headphones output Connector Standard 6.3 mm stereo jack Maximum output 100 mW + 100 mW (into 32 ohms) Supported OS - Windows Windows XP (32-bit only)
Macintosh MacOS X Snow Leopard (10.6)
OS X Lion (10.7)
OS X Mountain Lion (10.8)
OS X Mavericks (10.9)
OS X Yosemite (10.10)
OS X El Capitan (10.11.1)
macOS Sierra (10.12)
Power supply AC 120 V, 60 Hz Power consumption Max 13W (Auto power save standby mode: 0.1W) Overall Dimensions 290 (W) x 81.2 (H) x 244 (D) mm,
11.4" (W) x 3.2" (H) x 9.6" (D)
Net Weight 4.0kg (8 15/16 lb) Operating Temerature +5˚C to +35˚C
+41˚F to +95˚F
Operating Humidity 5% to 85% (no condensation) Storage Temerature -20˚C to +55˚C
-4˚F to +131˚C
Accessories AC Cable, AC Plug Adapter (3P-2P),
Stereo RCA Cable, Owner’s Manual,
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 http://www.interlinkexpress.com 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 Costs Mainland UK (Next-Day) Offshore/Out-of-reach (2-day)Northern Ireland, Channel Islands, Isle of Man, Scottish Islands, Scilly Islands Republic 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
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