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Topics - AndrewC

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I was actually just hunting for a spare digital cable on Ebay when I came across and ended up buying the Trinnov ST2 Pro at a steal (55% off retail, which I believe locally is about S$6,000)!!

This thing is designed for Mastering Studio use, for Speaker/Room correction of up to 4-channels. There's a Consumer version, the ST2 HiFi, which strangely is literally double the price, at about S$12,000 retail locally. Apparently the Pro unit is not available for purchase from the local Trinnov Dealers (not sure why), so you can only get the HiFi version locally*.

The main difference between the Pro and Consumer unit is that the Pro has only balanced XLR ports and Word Clock ports, whereas the Consumer version has a mix of single-ended RCA and balanced XLRs but no Word clock ports. Also the software frontend on the Consumer unit seems a little more user-friendly.

I intend to use the ST2 Pro in my (small) study, but gave it a spin on my main system over the last couple of days to see what it can do. So here's a somewhat mini-review.

The ST2 Pro is basically an off-the-shelf Compute platform with Audio I/O interfaces and specialised Trinnov proprietary Speaker/Room measurement & correction software.

The motherboard is a standard ASRock J4005B-ITX, with an Intel 2.7GHz Celeron Dual Core CPU and 8GB of RAM and all it's traditional ports; Ethernet, USB, PS2, and VGA, and can be connected with a keyboard, mouse and display, but the unit is generally accessed remotely over Ethernet though a VNC client.

Connected to the motherboard is Trinnov's proprietary Audio DSP board based on a TC-Applied Technologies' ARM-based TCD2220 Audio DSP chip, coupled to 2 Audio I/O interface boards; the ADA3 and AES4, for 8 x Analog balanced XLR ports (4-in/4-out) and 8 digital channels across 4 AES/EBU XLR stereo ports (2-in/2-out), and 2 x Word-Clock 75Ohm ports (1-in/1-out). The Audio DSP chip has a full "cross-bar router" feature which allows the routing of any channel to any channel, which the Trinnov software uses to full effect).

The unit is actively cooled with 2 internal fans, both virtually inaudible Noctuas, running at fairly low speeds, even when processing the correction function.

The 3D microphone is pretty cool, it's designed to "not only measure audio levels and arrival times but also direction, in both the horizontal and vertical planes". It actually consists of 4 individual spaced mics with their respective analog XLR outputs that you can connect to the ST2 Pro during measurement. Once done, it can be removed and those 4 ports used for analog audio I/O.

Here's a snapshot of the insides of the ST2 Pro;

General Discussion / U.S. vs. PRC
« on: 29 April, 2021, 15:18:43 pm »
Let's see if Biden can execute on his plan  ;D

Home Theatre / AppleTV 4K - Colour Calibration
« on: 21 April, 2021, 07:34:50 am »
Now thats like magic  ;D

Audio Stuff / MQA Exposed
« on: 16 April, 2021, 12:02:29 pm »
Yet another excellent exposé on MQA! Definitely worth watching.

ps: If you don't yet have Qobuz access, I can understand the interest in Tidal/MQA, but even then, watch the above video to get the real story on how MQA isn't always based on the highest res masters, and adds noise artefacts!!!  :)

Computer Stuff / Nvidia
« on: 15 April, 2021, 17:36:59 pm »
Anyone else watched Nvidia's monster Server CPU launch?... Holy smokes, they just chopped Pat Gelsinger's other leg off (after Apple chopped one off)  ;D

Keynote starts at 16mins in, and the "Project Grace" Server CPU announcement at 1 hour in;

By the way, check-out Jarvis at 1:24 for a Universal Translator!

Movies and TV Series / The Woman In the Window (Netflix)
« on: 09 April, 2021, 07:47:59 am »

Movies and TV Series / Star Trek: First Contact Day
« on: 07 April, 2021, 08:56:39 am »
Whole bunch of videos on Paramount's YouTube channel, including teaser trailers for Picard Season 2, and Discovery Season 4

Movies and TV Series / Loki (Disney+)
« on: 07 April, 2021, 08:54:41 am »

Computer Stuff / Apple WWDC21
« on: 01 April, 2021, 10:50:02 am »
Looking forward to what'll be announced!  :)

Computer Stuff / ARM v9
« on: 31 March, 2021, 16:53:49 pm »

Music Stuff / Glastonbury Festival 2021
« on: 31 March, 2021, 16:50:56 pm »
Live and Virtual! May 23rd Asia time.

Tickets available at:

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