iFi Audio Pro iDSD Headphone Amplifier

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iFi Audio Pro iDSD Headphone Amplifier | Audio Emotion
iFi Audio Pro iDSD Headphone Amplifier | Audio Emotion iFi Audio Pro iDSD Headphone Amplifier | Audio Emotion iFi Audio Pro iDSD Headphone Amplifier | Audio Emotion iFi Audio Pro iDSD Headphone Amplifier | Audio Emotion

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"The Pro iDSD is a phenomenally flexible component that delivers authoritative performances... I've rarely heard a better sounding multi-functional component with all kinds of digital sources, which after all is what really matters here. Versatile headphone amp/DAC/streamer that delivers outstanding sound quality at home or in the studio."
- Hi-Fi Choice - 5 Stars
Stock code: IFIPROIDSD

    For more information on any of our products please call us:

    01333 425999

    Our Price: £2,499.00
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    Product Information

    The term ‘music heaven’ is overused. But being a Streamer/Standalone/DacAmp with the highest-spec playback and resolution to date, the Pro iDSD is big enough to live up to the title.

    Chasing heaven?
    You've found it.

    Up stream. Next gen.
    The Pro iDSD with four DAC chipsets is the only ‘Interleaved Quad-Stack’ DAC of its kind. With Crysopia FPGA for remastering to DSD1024. But what really sets it apart is that it functions as a:

    • Standalone source. Connect HDD with music
    • Streamer. Wireless/wired playback on Tidal, Spotify…
    • DacAmp. DAC direct/DAC Headamp/DAC Pre-amp

    Ground-breaking technology at its finest. Nothing else like it exists.

    Heaven sent.
    The Pro iDSD is a God amongst DACs creating heavenly audio and casting out the audio demons that ruin your musical enjoyment.
    All hail the Pro iDSD

    The tech spec.
    The Pro iDSD is unique because it includes our:

    • Crysopeia FPGA Digital Engine

    Which upsamples your music to DSD1024 – that’s double the audio clarity supplied by all other DACs.

    • MQA Decoding

    No stone has been left unturned to offer every feature. Future-proofed with MQA playback.


    The 'fab four.' Quad 'stack' of Bit-Perfect DSD and DXD DACs by Burr-Brown.
    The 'interleaved' configuration means up to eight pairs of differential signals can be used and mixed, equal to four pairs of signals per channel.
    All this is not an easy concept to grasp and even more difficult to implement.

    Bit-Perfect Processing
    The new XMOS XU216 X-Core 200 Series 16-Core processor has a maximum of 2,000 MIPS (two billion instructions per second) calculation power in dual-issue mode as a USB interface.
    All-digital processing is Bit-Perfect, without employing ASRC or up-sampling unless digital filters are explicitly selected.
    It can decode signals from all Inputs, from USB (up to 768kHz/DSD512), AES/EBU or S/PDIF (up to 192kHz/24Bit) and Wifi/Network/Mass-storage (up to 192kHz/32Bit).

    Studio Grade
    A first! The Pro iDSD brings Studio Grade DSD1024 to a wider audience.
    For the DSD1024, if the MultiBit DAC is one half of the ‘heart’ of the Pro iDSD’s digital engine, then the other half is surely the Crysopeia FPGA.
    This is where we believe FPGA excels, by handling the remastering duties to attain the DSD1024 audio format. In fact, the Pro iDSD can handle all audio formats to to DSD1024 or DSD512 or PCM 768kHz with user-selectable digital filters.

    Listen to MQA straight out of the box.
    For MQA tracks, simply connect to Tidal (on your computer) and check the options to stream MQA.

    Memory Buffer

    For all inputs data is sent to the Memory Buffer. 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.

    The Pro iDSD can link directly link to a router for online music playback.
    With LINKPLAY™ WiFi/network playback, built-in Spotify and Tidal, and wide protocol support for 32-Bit/192kHz and DSD64, the Pro iDSD can be also used without a computer to stream audio.

    Galvanic Isolation
    This is one of the ‘holy grails’ of computer audio.
    All inputs are galvanically-isolated (including USB). This is the same level of execution as found in the AMR DP-777 Digital Processor.
    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.

    Best of Both
    First, iFi Audio use one of the best and unknown tubes - General Electric 5670.
    Second and just as important is the circuit design.
    Unlike other amplifiers that have the same circuit and just switch in/out the tube section, the Pro iDSD (along with Pro iCAN) is the very first of its kind that has two individual input circuits; one tube and one Solid-State.
    This results in the 'best sonics of both worlds' because the signal path is the shortest and there is no compromise to ‘shoe horn’ the tubes into an already existing solid-state circuit.

    iFi haven’t stopped there.
    iFi Audio are tube lovers and appreciate sometimes there is a need for an even more tube-like sound, so there are two tube settings: Tube and Tube+.
    The Tube+ position reduces overall loop-gain and thus negative feedback to the minimum.
    This gives a different sonic perspective between the tube’s natural harmonics and transient performance.

    Tri-brid Circuitry
    The amplifer 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 resulting circuit may be best described as a ‘tri-brid’ where each device is used to greatest sonic advantage while minimising any drawbacks.
    Furthermore, the circuit is pure DC coupled to avoid using any sonically-degrading coupling capacitors.

    The Pro iDSD has a premium Japan Alps motorised rotary volume potentiometer.
    This is the ‘6-Track’ version with 4 tracks used for a true balanced volume control.
    This is the litmus test for any amplifier to see if it is truly balanced or operates internally in single-ended mode.
    Those using ‘2-Track’ volume controls may offer balanced in and out but are not true balanced designs. The Pro iDSD however is fully-balanced from beginning to end.
    Just like its sibling the Pro iCAN.

    Elna Silmics
    To maximise dynamic performance, especially with bass, the analogue stage is backed by audio-grade ELNA Silmic Capacitors located within a few millimetres of the audio circuitry supplied.
    Elna Silmics are used in the final stages of the main DC bus which is filtered using multiple stages of inductor/capacitor filters.
    While other consider them 'boutique' components, we consider them 'must haves' to achieve the best sound quality.

    Elna Dynacap DZ
    The digital section is powered by a bank of Elna Dynacaps ‘super capacitors’ totaling 6.6 Farad (6,600,000uF).
    iFi uses Elna Dynacap DZ (TM) super capacitors because they have 400 times lower internal impedance than common grades of super capacitors.
    This exceptional low impedance means they release energy much faster than other super capacitors

    TI LDO Regulators
    All incoming DC is converted to a high-frequency waveform then rectified and filtered by a choke input capacitor filter. This produces a first-level DC bus from which all further voltages are derived. The circuit also generates a galvanically-isolated power supply voltage for the USB input circuitry.
    The digital section is powered by a bank of 'Super Capacitors' totaling 6.6 Farad (6,600,000uF). Individual low-noise TI LDO Regulators with local LC filtering provide the final low-noise power for all individual digital sections; a total of six individual regulators cover Clock, S/PDIF Input and the DAC’s digital section. For the analogue stage (especially the tubes) higher voltages are needed.
    The whole stage effectively operates on a 60V rail offering massive potential dynamic range.

    Technical Specifications

    Sample rates: PCM up to 768kHz
    DSD up to 49.152MHz (DSD 1024)
    DXD and double-speed DXD (2xDXD)

    Inputs: USB (required for DSD, DXD and sample rates above 192KHz)
    AES3 (XLR – single link)
    S/PDIF (coaxial/optical combo)
    BNC multifunction (S/PDIF in or sync input)

    Outputs: Balanced XLR at 4.6V (+15.5dBu – HiFi) or 10V (+22dBu – Pro)
    Single-Ended RCA at 2.3V (HiFi) or 5V (Pro)
    Headphones 6.3mm & SE 3.5mm Jack at 0.55V/2.1V/5V
    Headphones BAL 2.5mm Jack at 1.13V/4.6V/10V
    Headphones out 1,500mW RMS X 2 @ 64 ohm, 4,000mW max. 2 X @ 16 Ohm

    Headphone Output Impedance: Single-Ended (S-BAL): < 1Ohm SE
    Balanced: <2 Ohm

    Volume control: Balanced (6-gang) Alps potentiometer, motorised with IR remote control
    XLR/RCA outputs can be selected as fixed level or adjusted
    6.3mm headphone jack is always adjusted

    Other Functions: Various digital and analogue filters can be selected for DSD and PCM up to 384KHz

    PCM Filters: Bitperfect 44.1 – 192kHz, always used for 352.8 – 768kHz
    Bitperfect + 44.1 – 96kHz
    Gibbs Transient Optimised 44.1 – 384kHz
    Apodising 44.1 – 384kHz
    Transient Aligned 44.1 – 384kHz

    DSD filters: fixed 3rd order analogue filter @ 80kHz with correction for DSD’s -6dB gain

    Gain (headphone section): user-selectable: 0dB, 9dB and 18dB

    Dynamic range: 119dBA (solid-state, PCM, -60dBFS)

    Output power (16Ω, balanced/single-ended): >4000mW /1>1,500mW

    Output voltage (600Ω, balanced/single-ended): >11.2V / >5.6V

    Input voltage (Pro iDSD): DC 9V/6.7A – 18V/3.35A

    Input voltage (iPower+): AC 85 – 265V, 50/60Hz

    Power consumption: < 22W idle, 50W max.

    Dimensions: 213 (l) x 220 (w) x 63 (h) mm

    Weight: 1980g (4.37 Ibs)

    Manufacturer Site

    Stock Enquiry

    Occasionally, due to stock demand, we can sell out. If this occurs when you make a purchase, we will inform you quickly. Most out of stock items are available for dispatch within 3 working days. If your purchase is urgent, use this form for a priority price and stock availability check.

    All pre-owned items are in stock and available for next day delivery if order placed before 1pm.

    Enquiries will be responded to within 1 hour during office hours.



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    • 01333 425999

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    Customer Reviews

    Write an online review and share your thoughts with other shoppers!

    "The Pro iDSD is a phenomenally flexible component that delivers authoritative performances... I've rarely heard a better sounding multi-functional component with all kinds of digital sources, which after all is what really matters here. Versatile headphone amp/DAC/streamer that delivers outstanding sound quality at home or in the studio."
    - Hi-Fi Choice - 5 Stars
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