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Pro iDSD 4.4 Signature Streamer DAC w/ Preamp and Headphone Amplifier By iFi Audio
Item #:
5.00
2 reviews
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Product Summary:
The Pro iDSD Signature is our new flagship reference class DAC and then some! The Signature edition builds on the strengths of the original, multi-award winning Pro iDSD.... Click To Read More
Trial Period 90 Days (Exchange)
Countries Shipped Worldwide
Burn-In Time 100 Hours
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Price:

Pro iDSD 4.4 Signature Streamer DAC w/ Preamp and Headphone Amplifier By iFi Audio

$3,249.00

The Pro iDSD Signature is our new flagship reference class DAC and then some! The Signature edition builds on the strengths of the original, multi-award winning Pro iDSD.

$3,249.00

Product Description

Top of line DAC and so much more.

The Pro iDSD Signature is our new flagship reference class DAC and then some! 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.

Use the Pro iDSD Signature as a standalone unit, a DAC/preamp, a network streamer and a headphone amplifier.

A Signature step up

The Signature takes the original Pro iDSD and pushes it even further towards perfection.

The Pro iDSD Signature has:

  • a sonically darker background and a punchier bass
  • upgraded power -supply components to lower the overall system noise by 300%
  • precisely matched NOS GE5670s tubes
  • added support for USB1.0 (PS4/PS5)
  • a new aluminium remote control
  • a top-of the range iPower Elite power supply included

 

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.

E-tailoring

The Pro iDSD Signature, like its predecessor, takes sonic tailoring to the extreme.

Listen to the your music to in solid-state, tube or tube+ modes, your choice, all at the flick of a switch.

Our Crysopeia FPGA Digital Engine strikes again as it enables the Pro iDSD Signature to offer several options when it comes to digital filtering. The GTO filter adds gravitas and a new dimension, and while the Bit Perfect, Bit Perfect+, Apodising and Transient Aligned filters give you even more choices to tweak the sound.

The discrete, fully balanced Class A amplifier stage offers adjustable gain.

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 has a ‘quad stack’ of Bit-Perfect DSD and DXD DACs by Burr-Brown. The ‘interleaved’ configuration means up to 8 pairs of differential signals can be used and mixed, equal to 4 pairs of signals per channel.

Full lowdown? User Manual, page 13.

The Pro iDSD Signature employs the new XMOS XU216 X-Core 200 Series 16-Core processor. All-digital processing is Bit-Perfect unless particular digital filters are explicitly selected.

Upsampling to DSD1024 has previously only been available to a select few. The Pro iDSD Signature makes it available to a wider audience. The DSD1024 remastering is handled by the Crysopeia® FPGA and this is where we believe the FPGA excels.

Data is sent to the Memory Buffer from all inputs. Here it is de-jittered to eliminate any transmission of source jitter to the DAC output. The data from the Memory Buffer is further re-clocked by the low-jitter Global Master Timing® clock, which also drives the X-Core 200 and FPGA.
With LINKPLAY™ WiFi/network playback, built-in Spotify and Tidal, and wide protocol support for 32-Bit/192kHz and DSD64, the Pro iDSD Signature can be also used without a computer to stream audio directly.

Galvanic isolation is the ‘holy grail’ of computer audio. All inputs are galvanically-isolated (including USB). The USB input section has its own separate power management system with multiple regulators and filtering operating from the galvanically-isolated voltage generated to power this section.

Unlike other amplifiers that have the same circuit and just switch in/out the tube section, the original Pro iDSD and now the Pro iDSD Signature are among the very first to have two individual input circuits – one tube (General Electric 5670 tubes!) and one solid-state.

This results in the ‘best sonics of both worlds’.

The amplifier audio circuit is fully discrete, fully-balanced with either tube or J-FET input switchable, bipolar second stage and MOSFET-buffered bipolar Class A Power stage.

The amplifier audio circuit is fully discrete, fully-balanced with either tube or J-FET input switchable, bipolar second stage and MOSFET-buffered bipoaWe’ve given the Pro iDSD Signature an extra Tube+ setting. This reduces overall loop-gain and negative feedback to the minimum and presents a different sonic perspective between the tube’s natural harmonics and transient performance.

The Pro iDSD Signature is packed full of premium components – a Japan Alps rotary volume potentiometer, audio-grade ELNA Silmic capacitors and a bank of Elna Dynacaps ‘super capacitors’.

MQA (Master Quality Authenticated)

MQA is an award-winning British technology that delivers the sound of the original master recording. The master MQA file is fully authenticated and is small enough to stream or download. The Pro iDSD Signature adopts MQA technology to receive and decode MQA audio and provide master-level sound.

Note: We strongly recommend adding the iFi iPower Elite Power Supply anywhere else you can use an external power supply in your system. In our listening tests, the iPower Elite improved the sound so dramatically we now consider it essential. It comes with a 45-day trial period but we heard the results in about an hour.

Reviews

Srajan Ebaen – 6moons.com
The Pro iDSD Signature gets not one, but two awards from Srajan Ebaen at sixmoons.com “If I could afford to…I’d replace the converters in our downstairs main system and upstairs speaker system and upstairs beside headfi. I’d go in heavy all guns blazing so in triplicate. myFi(nd) indeed.”

https://6moons.com/audioreview_articles/ifi6/

 

Hifi And Music Source
“This product is really about the idea, a portable rechargeable Bluetooth headphone amplifier for wired headphones is just a brilliant idea. The fact the audio performance matches the idea makes this a special product. On price, portable performance and just the idea, this is an outstanding product.”

https://hifiandmusicsource.com/2021/09/ifi-go-blu/

 

GO blu – I love this thing and my FiiO BTR5 is going in the drawer
“This little player is amazing! The sound is of course very good, dynamic and musical. Exactly what I want on the go. But where the Go Blu excels is in the way some things have been implemented. First of all the volume control is PERFECT. You can make very finite adjustments on the wheel but it is still tied to the device volume control (on IOS anyway). This means you can also use the device to step up and down in larger chucks but as you use the volume on the Go Blu to change volume the device volume will still step up/down accordingly. I hate it when the 2 volume controls are totally independent or where a device is tied to the 16 steps of the device volume. This is the best of both worlds.

The usability of the Go Blu is great too. Very fast to turn on and off. The long press is only a second or so. Controls are very intuitive (unlike the BTR5 which is pretty fiddly).

I was surprised how small it is. It’s a lot smaller than it looks in the pictures.

Device battery status is also shown on the iPhone which is a big bonus too.”

https://www.amazon.co.uk/gp/customer-reviews/R4CSDD0PLGY71

Videos

Specifications

Sample rates : PCM 768kHz / DSD 49.152MHz (DSD 1024) / MQA 352.8KHz/DXD (2xDXD)
Inputs : USB / AES3 (XLR) / S/PDIF (coaxial/optical combo) BNC / Ethernet / Wi-Fi / Micro SD
Filters : Bit Perfect / Bit Perfect+ / Gibbs Transient Optimised / Apodising / Transient Aligned
Gain: User-selectable: 0dB, 9dB and 18dB (headphone section)
Dynamic range : 119dBA (solid-state, PCM, -60dBFS)
Output power : (16, balanced/single-ended): >4,200mW /1>1,575mW
Output voltage : (600, balanced/single-ended): >11.7V / >5.9V
Input voltage (Pro iDSD) : DC 9V/6.7A – 18V/3.35A
Input voltage (iPower Elite) : AC 85 – 265V, 50/60Hz
Power consumption : < 22W idle, 50W max
Dimensions : 213 x 220x 63 mm, 8.4″ x 8.7″ x 2.5″
Net weight : 1980 g, 4.37 Ibs

iFi Product Manuals

Firmware and Driver Downloads

2 reviews for Pro iDSD 4.4 Signature Streamer DAC w/ Preamp and Headphone Amplifier By iFi Audio

  1. Bonnie Thum

    “I bought this for several reasons. I wanted a DAC and Headphone Amp for my desk. I also wanted a Tube and Solid State Headphone Amp. This also allows for network connection for several uses. It has balanced and unbalanced (single ended) connections for headphones, and a plethora of inputs/outputs.”

    Ref:

  2. lucien castan

    “Bottom line: iFi Audio’s Pro iDSD lived up to the hyperbole of its owner’s manual. It did actually play music like “a ‘state of the art’ reference digital to analog converter.” It did indeed sound like “an all-out assault” on what is possible in DACs today… and it did both of those good things at a ridiculously low price. Highly recommended.”

    Ref: https://www.stereophile.com/content/ifi-audio-pro-idsd-da-processorheadphone-amplifier

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