Wednesday, 20 June 2018

MEASUREMENTS: Oppo UDP-205 Part 3: Jitter, Some Conclusions and Discussions.

We've reached the last of the "trilogy" measurement posts I'm planning to make on the Oppo UDP-205 (at least for now!). We've already examined some "microscopic" measurements like the oscilloscope reading of square waves, talked about the filter settings and relative differences. Then we've looked at the RightMark measurements demonstrating excellent low noise level, low distortion readings, good frequency responses, and minimum crosstalk across the different outputs.

With this post, let's have a look at the J-Test results from the various outputs to make sure there are no issues, and of course in the process examine temporal stability with the various digital inputs including USB, ethernet, S/PDIF, HDMI, and of course as a CD player...

Sunday, 17 June 2018

MEASUREMENTS: Oppo UDP-205 Part 2: Frequency Response, Noise and Distortion Levels. (Plus a look at the new v60 beta firmware.)

Let's continue today with the measurements of the Oppo UDP-205 as started a few weeks back when I looked at the digital filter settings and output levels for this device.

As promised, this time we're going to dive into some RightMark measurements of this device looking at the quality from the different analogue outputs, whether the digital inputs make a difference and we'll even explore a little around multi-channel.

As I noted in the preview, this device is based on the ESS ES9038Pro DAC, currently the "top of the line" reference DAC available from ESS. The results here I think would be interesting by providing comparisons with other DACs such as with the previously measured Oppo BDP-105.

Saturday, 9 June 2018

MUSINGS: Why Do People Equate High End Audio with Snake Oil?


I ran into this video post by Paul McGowan a few weeks back... "Why do people equate high end with snake oil?" (Start at 3:00 to skip past the chat on building their studio...)



Interesting discussion I guess...

If you do a search for the words "snake oil" on this blog, you'll see that I typically don't use the term much in my writings. But we do find it used in the forums and in discussions online. It's certainly not uncommon for people to express opinions that certain marketed audio devices or components belong to this understandably maligned category of product.

Saturday, 2 June 2018

MEASUREMENTS: Oppo UDP-205 Part 1: Output levels and digital filter settings... (And a few words about recent Munich 2018 MQA interview videos, McGill listening test out.)

Well guys, with this post, I'll begin a multipart look at the Oppo UDP-205 4K Blu-Ray player as an audio component "more objectively". Clearly, as I presented in the preview a couple weeks back, the UDP-205 is very much a device created to appeal not only to videophiles but audiophiles. Why else would Oppo go the extra mile and use dual "reference" ESS ES9038Pro Sabre DACs, provide 2-channel asynchronous USB 2.0 input, both multichannel and stereo analogue outputs plus balanced XLR? It even provides a secondary HDMI 1.4 "audio" output for lower jitter to an external DAC compared to the higher spec HDMI 2.0 which is of course a necessity for 4K/60fps/HDR video; something that I have not seen before. IMO, for home video purposes as a 4K player, the UDP-203 would in fact be very much sufficient - the upgrades found on the UDP-205 are primarily for those who want elevated audio performance. We'll look at whether this is true through these objective measurements.

For the post today, let's start with a few of the "microscopic" measurements that I typically put devices through. The reason I'm breaking measurements into multiple parts is because there are so many ways you could use this device! You could spin disks and make this a CD/DVD-A/SACD/BluRay-Audio player. Hook it up to a streamer/computer through the USB 2.0 interface. Use HDMI input for multichannel audio decoding. Of course it could be used as a S/PDIF DAC with TosLink or coaxial inputs. How about use it as a DLNA/UPnP streamer (works fine with JRiver, even 5.1 multichannel FLAC)? We'll look at bits and pieces in the performance of this device over the next while, concluding in a general assessment of quality and shortcomings once all is said and done...