ifi Pro iDSD User Manual
Pro iDSD
User Manual
Thank you for purchasing this Pro series iDSD. The Pro iDSD is a 'state of the art' reference digital to
analog converter. lt is able to excel in many scenarios - as a wireless hi-res network player or the central
DAC in an expensive high-end home system, to quote just two examples. The on-board balanced
headphone section means high-end headphones can also be directly connected to it.
Features:
1. Quad-Core Burr Brown MultiBit/DSD hybrid DAC supporting DSD1024 and PCM768kHz
2. Studio grade DSD1024 remastering (Crysopeia FPGA Digital Engine)
3. Wireless DLNA/Airplay™/Ethernet Hi-Res Playback
4. User-selectable analogue stage: Tube or Solid-State
5. Master Quality Authenticated (MQA) playback
6. Global Master Timing femto grade clock system with external clock input options
7. Five lters: Bit-Perfect/Bit-Perfect+/Gibbs Transient Optimised/Apodising/Transient Aligned
8. Fully discrete passive LC analogue ltering
9. Zero Jitter Memory Buffer and Galvanic Isolation for all inputs
10. Discrete headphone/line amplier
11. Balanced inputs and outputs
12. Galvanic isolated ultra-quite power supply with super capacitors
1
1
4
6
9
11
3 5
2
1.
LED indicator
2.
Power
3.
Input selector (incl. Brightness/Polarity)
4.
Filter selec tor (incl. DSD Remastering/WPS)
5.
Output mode: Solid-State/Tube/Tube+
6.
OLED display
2
P.4
P.4
P.4
P.5-6
P.7
P.8
7 10
8
Single -Ended 3.5mm headphone socket
7.
Headphone gain selection: 0dB/9dB/18dB
8.
9.
Headphone 6.3mm socket
10.
Balanced 4.4mm headphone socket
11.
Analogue volume control (Line and
Headphone outputs)
IR remote control sensor
12.
12
P.8
P.8
P.8
P.8
P.8
P.9
13
R
14
L
L
R
Outpu ts
16
HiFi (Fixed )
Outpu t Mode
Pro (Fixed)
HiFi (Var)
Pro (Var)
202122
Host
Device
COAXIAL
OPTIC AL
Digit al Inpu ts
Technolog y licen sed from A MR-Au dio, UK
XLR
Assembl ed in Chi na
Sync In (U SB)
BNC
26 27
DC Loop - Out
Sync
Mode
DARS
Stand
Alone
DC 15V/ 4A
Sync Out
Pro
13.
XLR Balanced signal outputs
14.
Single -Ended signal outputs
15.
Output selector:
HiFi Fixed/HiFi
Variable/Pro Fixed/Pro Variable
16.
Ethernet
17.
Host USB
18.
Device USB
P.9
P.9
P.9
P.10
P.10
P.10
15
19.
Coaxial/Optical Digital Input
20.
Micro SDHC
21.
XLR Digital Input
22.
Wi-Fi antenna
23.
BNC Digital Input
24.
Clock Sync mode:
171819
Atomic/DARS/Word/Standalone
P.10
P.10
P.11
P.11
P.11
P.12
23
24 25
25.
Clock Sync output
26.
DC loop out supply
27.
DC power supply connection
Analogue Outputs
Digital Inputs
Clock
P.12
P.12
P.12
(13 - 15)
(16 - 23)
(24 - 25)
3
1. LED
Green: Warming Up
White: Solid-State Mode
Orange: Tube Mode
Red: Protection Mode
2. Standby/Power
3. Input selector
Use the selector to ’cycle’ through the following input options:
- WiFi/Ethernet/Hard Disk/Micro SDHC
- Device USB (connect to a computer)
- Coaxial/Optical Digital Input
- XLR Digital Input
- BNC Digital Input
Also available via the input selector are:
- Brightness (press to adjust)
- Polarity (hold to adjust)
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4. Digital lter selection
The Pro iDSD offers the following three choices of digital processing:
i) Direct – Bit-Perfect
Both PCM and DSD signals are not processed in any way.
For PCM this is effectively what is sometimes called "non-oversampling" or "zero-oversampling."
For DSD it means the le is retained in the original DSD format and directly converted to analogue
without any digital processing.
ii) PCM - Upsampling
In this case PCM is up-converted to 16 x PCM (705.6/768kHz) using a choice of digital lters.
The following ve digital lters are available:
No digital ltering is applied, one tap'Bit-Perfect'
No digital ltering is applied, one tap, SINC roll-off is corrected'Bit-Perfect+'
Minimum ltering, no pre-ringing, minimum post ringing, 32 taps'Gibbs Transient Optimised'
Modest ltering, no pre-ringing, modest post ringing, 128 taps'Apodising'
Max ltering, max pre-ringing, maximum post-ringing, 16,384 taps'Transient Aligned'
The digital lter selections can be made 'on the y' to suit the listener's preferences.
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Each lter effects a different time-domain and frequency-domain performance.
DSD remains completely unprocessed.
iii) DSD - Remastering
In this case incoming audio (except DSD512) is converted to either DSD512 or DSD1024 as selected,
using the lter selected (including Bit-Perfect, meaning no digital ltering is applied).
All these digital processing options apply to ALL sources, including the network audio bridge and AES EBU & S/PDIF inputs.
Inputs other than USB are currently limited to maximum sample rates of 192kHz PCM and DSD64 via DoP.
Please try all the different options to see which you enjoy the most.
Full Galvanic Isolation
All inputs are galvanically-isolated (including USB). The USB input is self-powered and does not draw
power from the USB bus. Therefore, the USB section is quite impervious to aftermarket add-ons or
tuning accessories.
WPS
For ease of use, simultaneously use the WPS button on the Pro iDSD and the router so that they can
both complete the handshake to pair up.
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