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TransportPi Digi/II, Audiophile master mode digi re-clock streamer
TransportPi Digi/II, Audiophile master mode digi re-clock streamer
4.94 / 5.0
(16) 16 total reviews
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Introduction
TransportPi Digi is an audiophile grade high-performance low-cost master mode all-in-one Raspberry Pi interface transport. It successfully achieves an ultra-low jitter low noise signal quality by using IanCanada's well reputed 1-bit three stages discrete re-clock technology for the S/PDIF signals and two-stages multi-bits re-clockers for the I2S over HDMI signals. TransportPi Digi also has dual XOs sockets for local audio clocks to make it possible to be upgraded to even higher sound quality level by installing OCXOs or other kinds of ultra-low phase noise clocks.
As an all-in-one digi transport, it provides almost all kinds of high quality re-clocked output: RCA, OPT, HDMI and GPIO. Because of the most advanced low-jitter and low-low noise technologies it employs, TransportPiDigi could be the best sound quality compact size RPi streamer transport when working with UcPi, PurePi or other high quality power supplies.
TransportPi Digi is functionally equivalent to a I2S FIFO re-clocker plus a TransportPi
Features and Specifications
- Four high quality outputs: re-clocked S/PDIF output in RCA (Isolated) and OPT, re-clocked I2S output over HDMI, re-clocked I2S output over GPIO
- Low noise 1-bit discrete re-clocker for S/PDIF signals (three stages in total)
- Two-stages multi-bits re-clocker for I2S over HDMI signals
- 45.1584/49.1520 MHz dual low phase noise local clocks were pre-installed in the upgradeable/swappable XO sockets which are compatible with FifoPi. 22.5792 /24.5760 MHz clocks can also be used
- Has high quality local MCLK output in U.FL coaxial cable connector
- Can also work as an I2S FIFO re-clocker.
- Has low noise clean 3.3V/5V power supply input which is great for directly work with the LifePO4 battery or ultracapacitor power supply. On-board LDO can also be bypassed.
- Can also share Raspberry Pi ‘s power supply
- Works with SinePi to take external high quality sine clocks
- Great for compact size audiophile integrated Raspberry Pi streamer transport solution
- Up to 192KHz
- Four layers PCB design with two inner PCB layers as dedicated shield plates to lower the noise more
- Enhanced power supply filtering network with more than 130 ultra-low ESR decoupling capacitors
- No need a FifoPi to work with
- uses standard WM8805 Linux driver
- Low cost but no compromise on performance
- bit-perfect and lossless
- Diy friendly plug-and-play
TransportPi Digi II new features
- Supplied with higher grade FemtoMck 45.1584/49.1520 MHz clocks, as same as FifoPiQ7
- Direct 3.3V input optimized for high quality low noise battery/ultracapacitor power supply
- Mute control for I2S over HDMI
- New S/PDIF digital transformer
- Enhanced coaxial signal quality, capable of working in high EMI noise environment
- Top level manufacturer quality
Note: Jumpers on J2 of the TransportPi Digi must be removed if supply independent 3.3V to J3 without installing an IsolatorPi.
TransportPi Digi User's manual
TransportPi Digi II User's manual
Documents
https://github.com/iancanada/DocumentDownload/tree/master/TransportPi/TransportPiDigi
Possible upgrade
SC-Pure clocks(#80A and #80B)
UcConditionerPro 3.3V
Spike feet
Acrylic cover
Typical Applications
- Basic network re-clock streamer transport
TransportPi Digi (II)
RaspberryPi - Low cost good sound quality Digi re-clock streamer transport with ultracapacitor power supply
(1). Raspberry Pi
(2). TransportPi Digi (II)
(3). MonitorPi Pro
(4).UcPi 2025 - Audiophile grade Digi re-clock Streamer Transport using PurePi ultracapacitor/battery power supply
(1). Raspberry Pi
(2). TransportPi Digi (II)
(3). MonitorPi Pro
(4).PurePi - High-end compact size RaspberryPi Digi re-clock Streamer Transport using IsolatorPi and PurePi ultracapacitor/battery power supply (Recommended)
(1). Raspberry Pi
(2). TransportPi Digi (II)
(3). IsolatorPi III
(4). MonitorPi Pro
(5).PurePi
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Replaced my Allo USB Signature with a clear SQ improvement.
Huge step up from Wiim mini for sound quality comparing optical out to a SMSL SU1 on the same FLAC files from my phone streaming from the same software. Now I am waiting to upgrade my dac and compare the optical out to the I2S out to see what difference that makes. I did not think my modest system was able to resolve space and depth as it now does. Only issue I have is the Wiim was definitely more reliable as a streamer and worked flawlessly without dropping out. I have many drop outs per listening session using my RPi4B. For me, I would keep both this and Wiim connected and my wife would use the Wiim for a better user experience for Spotify connect. I would use the rpi4 for critical listening.
I was looking at buying an Allo Digi one HAT to add to my Raspberry Pi 3 B +, but I saw a youtuibe video about Ian Canada product and I though I should look more into them. The Tranport Pi Digi II has Coaxil, optical and I2S connections as well as being a re-clocker That made my choice a no brainer. For only $35 dollars more than the Allo Digi one HAT, The Transport Pi Digi II was such a better option for such a small increase in cost. The Transport Pi Digi II connecteed to my Raspberry Pi 3 B + made a great sounding streamer. But I have added the Pure Pi II power supply which has elevated my streamer to spectacular sounding streamer. I have run it through my Chord DAC via coaxial to BNC and it sounds very good, but it sounds spectacular through my Holo Audio Spring 3 Lvl 2 via I2S cconnection. I've never heard anything so amaizing. I2S is my fovorite connection on the Transport Pi Digi II. After you hear how good this connection sounds, it is very hard to switdh back to Coaxial. Don't get me wrong, coaxial sounds very good. But I2S is the next level
Just the TransportPi Digi/II on top of my RPI 3B+ outputting via I2S to my DAC (LAIV uDAC) sounds better than my Eversolo DMP-A6 Gen 2 outputting over USB. Very easy to setup with Roon and Ropieee. I added a PurePi II and IsolatorPi III and it blows the Eversolo away.
On top of my RPi 4 and via coaxial RCA to my Fosi ZD 3...............works flawlessly!
Slight fiddle on what to select as HAT in Volumio, but conferred with instructions, found the correct one! Sound.....in my system.....great! Better than my Hifiberry HAT......possibly!