**Products are sold online and in-store simultaneously. The stock quantity may not be updated in the online system in time. **
Key Features
Quad DAC Architecture
Powered by quad-stack of Burr Brown DACs, the Pro iDSD Signature achieves unmatched linearity and impeccable channel separation – a design legacy from our mastering-grade DAC, the Pro iDSD. Inspired by the legendary Phillips TDA1541A which is hailed as the ‘king of multi-bit DACs’, this quad-core DAC architecture echoes the magic and heritage of the Philips chipset used inside the AMR CD-77. The Pro iDSD Signature offers the dynamic punch and slam of the iconic Phillips chip, but with superior low-level linearity for breath-taking detail.
Professional-Grade DSD1024 Remastering
Remastering content to high resolution DSD has previously only been available to a select few, including the world's best mastering houses.. The Pro iDSD Signature is the first DAC that brings this once exclusive processing to the hands of the consumer via a custom-coded FPGA, to transform any file and ultimately make music sound closer to a professionally remastered recording.
Switchable Discrete Solid-State or Tube Circuitry
Choose between two fully balanced Class A circuit modes – discrete solid-state or tube – in real time. Both use the highest-grade components, with the tube mode powered by hand-selected, matched NOS GE5670 valves. Love the rich, analogue warmth of tubes? Activate Tube+ mode to boost 2nd-order harmonics by 6dB for an even more fluid, musical sound.
DLNA Network Streaming via Wi-Fi or Ethernet
Stream high-resolution music wirelessly to your Pro iDSD Signature using Airplay or your favourite DLNA/UPnP player – all from the comfort of your couch.
A Signature step up
The Signature takes the original Pro iDSD and pushes it even further towards perfection. It has a darker sonic background and punchier bass, upgraded power supply components for 300% lower system noise, matched NOS GE5670s tubes, USB1.0 support for PS4/PS5, a new aluminum remote, and the premium iPower Elite power supply included.
E-tailoring
The Pro iDSD Signature offers extreme sonic tailoring with solid-state, tube, or tube+ modes at the flick of a switch. The Crysopeia FPGA Digital Engine provides multiple digital filtering options, including GTO, Bit Perfect, Bit Perfect+, Apodising, and Transient Aligned filters, for precise sound tweaking. Its fully balanced Class A amplifier stage features adjustable gain.
Stacked. With tech.
The Pro iDSD Signature uses a quad-stack DAC – 4 x DACs in an interleaved configuration – to deliver exceptional resolution. The powerful XMOS XU216 X-Core 200 series chipset processes incoming digital data and enables the Pro iDSD Signature to provide state of the art audio support – from MP3, 32-bit/768kHz PCM, DSD512, 2xDXD and full MQA decoding.
Thanks to the Crysopeia FPGA Digital Engine the Pro iDSD Signature brings studio grade DSD remastering to a wider audience. It can upconvert PCM and DSD files to DSD512 and DSD1024.
And all controlled from an app in the palm of your hand.
Your choice. The only choice.
- Stream wirelessly from Tidal, Spotify, Napster, QQ Music and more
- Use Airplay to enjoy playback from your iPhone, iPad or Mac
- Go wired via an Ethernet connection to play from a router or NAS (Network Attached Storage)
- Use DLNA network audio playback with smartphones, tablets, Windows/Linux computers
- Connect to a hard disc drive (HDD)
- Pop in a USB memory stick or SDHC card
And with a variety of headphone outputs – Single-Ended 6.3mm, S-Balanced 3.5mm and Balanced 4.4mm – the only choice is your choice.
Power cleans. Absolute.
The Pro iDSD Signature ships with our flagship iPower Elite. Coupled with the re-crafted power supply board which offers up to 300x lower noise, the music is buttery smooth.
Within and without – we left no stone unturned in our quest for the cleanest, purest, power for the Pro iDSD Signature (same for Pro iCAN Signature too!)
The Pro iDSD Signature is the new flagship reference-class DAC.
Top of line DAC and so much more.
The Signature edition builds on the strengths of the original, multi-award winning Pro iDSD. It continues to cater for those who love good music delivered at the highest quality.
The Pro iDSD Signature functions as a standalone unit, DAC/preamp, network streamer, and headphone amplifier.
Specifications
DIGITAL FILTERS
Bit-Perfect/Bit-Perfect+/Gibbs Transient Optimised/Apodising/Transient Aligned
DIMENSIONS
213 x 220x 63 mm / 8.4" x 8.7" x 2.5"
GAIN
Headphone Section:
user-selectable: 0dB, 9dB and 18dB
INPUT
USB/AES3 (XLR)/S/PDIF (coaxial/optical combo)/BNC
INPUT VOLTAGE
Pro iDSD - DC 9V/6.7A – 18V/3.35A
iPower Elite - AC 85 – 265V, 50/60Hz
LIMITED WARRANTY
12 months
NET WEIGHT
1980 g (4.37 Ibs)
OUTPUT POWER
(16Ω, balanced/single-ended): >4,200mW /1>1,575mW
OUTPUT VOLTAGE
(600Ω, balanced/single-ended): >11.7V / >5.9V
POWER CONSUMPTION
< 22W idle, 50W max.
SAMPLE RATE
PCM 768kHz/DSD 49.152MHz (DSD 1024)/MQA 352.8KHz/DXD (2xDXD)
What's in the Box
1x Pro iDSD Signature
1x USB 3.0 Cable
1x RCA Cable
1x iPower Elite
1x Infrared Remote Control
1x Antenna
1x Plastic Screwdriver
1x Optical Fibre Conversion Head
1x User Manual
1x iFi warranty
Frequently Asked Questions
Is Bit-perfect+ not present?
Bit-perfect+ is only available for sample rates of 96kHz or lower. If the PC sent a different sample rate (e.g. 192kHz) there is no Bit-perfect+ option.
Can it be affected by noise on USB line?
The Pro iDSD/Pro iDSD Signature can be affected by packet errors the same way any USB device can. It is not, however, affected by noise on the USB power (it does not use USB power) or ground/Earth loops via USB or other inputs (because it uses galvanic isolation).
Does it have a headphone amplifier?
There is no “headphone amplifier” in the Pro iDSD / Pro iDSD Signature. Just a gain stage/line driver that is sufficiently powerful to drive many headphones directly, however, doing so is clearly a compromise over using a dedicated headphone amplifier like our Pro iCAN/Pro iCAN Signature. It is adequate for anyone occasionally using headphones while mostly using a speaker based system. However, unlike the Pro iCAN/Pro iCAN Signature, it is not optimized for headphone drivers. It cannot drive as wide a range of headphones as the Pro iCAN/Pro iCAN Signature and it lacks the sonic controls offered by the Pro iCAN/Pro iCAN Signature.
It should be seen as a state of the art DAC, which may drive headphones, and not as headphone amplifiers that accidentally had some “normal DAC” fitted.
External USB memory sticks
Some SSD/USB memory sticks will work powered from the Pro iDSD/Pro iDSD Signature “A” (host) interface, however, this cannot be guaranteed, as some drives require as much as 1A. If in doubt, add iDefencer+ and iPower to provide power to the drive USB.
Does the fixed output bypass the analog pot completely, and does the tube get used on the DAC’s output stage, or is it for the amp stage only?
Yes on both.
Is 5 GHz supported?
No, not at this time only 2.4 GHz.
What do the LED colours mean on the top left front panel?
Green = Warming Up
White = Solid State
Orange = Tube Mode
Red = Protection Mode
