Did you realize that you can easily discern the sound differences on these audiophile a/b device comparisons over @
the audio streaming series
In 2012 I wrote an article about Full Digital Amps. I just updated it a little. That's one part of the news.
During those days I was trying and tweaking several of these FDAs. I really liked the technology and the idea behind it. And they sounded extremely clean and dynamic already back then. IMO cleaner and more dynamic then most DAC-amp combos I had listened to. In the article I describe what I didn't like and why I left that idea alone. Just to mention it: It was mainly due to the mediocre digital pre-stages of these amps. These amps also need top notch USB receivers, filters, clocks, DSP/SRC, power supplies, regulation, layouts, isolation etc. During those days that's IMO been a major weak spot.
I still kept watching for developments. Not much was happening over the years.
Just wanted to let you know. I am onto something.
I managed to build a standalone player based on RPi4, LMS and squeezelite - all on one machine.
OK. Not that it would be such a big challenge to get something like that going. ;)
To get something like that going and performing better than anything else you had in front of you, that's something.
Obviously I had to do quite some tweaking to get there and that includes a realtime kernel which unfortunately is no longer supported by the pCP folks.
All I am saying. Those of you with DACs sensitive to upstream changes, let me tell you, there's more to gain.
I am not sure yet, if I am gonna make a major project out of it. It'd take me quite some effort.
I just wanted to let you know, that sKit also supports recently launched piCorePlayer 8.0.
I highly recommend to tu run the piCorePlayer upgrade. The insitu upgrade shouldn't kill anything.
However I'd agree with the pCP folks to run a fresh install.
Kernel, gcc and a lot more has been updated. It's IMO worth it.
I worked a little on sKit to make it more convenient and stable.
* most of the tweaks get automatically installed now
no real need to dig into the Audio Streaming series anymore.
* sKit-manager remove function - removes everything from now on
there shouldn't be any sKit trace left anymore once that is done.
What's basically left for to you do is
- you install a fresh pCP image,
- increase it to at least 200MB,
- configure your audio interface via WEB-UI and
- install sKit
At that point you should have a well tuned system up'n running.
On 1.4 I added some changes to the affinity tweak. I now assign squeezelite to
CPU 1 and 2 without isolating these CPUs anymore.
The documentation also got updated. And of course this or that error got corrected.
sKit 1.4 needs a fresh pCP install as base. Using sKit-manager update won't work. Sorry for that.
sKit 1.4 is still beta. I'll wait for 2 weeks for feedback before officially releasing sKit 1.4. I count on your feedback.
I'd like to introduce the first release of soundcheck's tuning kit - pCP (sKit) .
sKit provides a small and potentially growing number of little tools that'll help to setup piCorePlayer 7.0+ and Rpi4 and 3 in line with the advanced tuning recommendations outlined in my Audio Streaming Series.
The underlying idea is to take quite a basic operating system like piCorePlayer and tune it that way that it'll provide you with the best possible performance -- challenging most other (audiophile) OSes and streaming solutions out there.
This is not just another of these meanwhile numerous "audiophile" operating system out there though. In principle these do nothing else then applying this or that tweak you'll also find on this blog for years. The idea is to provide you with a tuning kit instead. You take it and apply it to that standard operating system installation yourself. And sKit supports you on that.
You'll put yourself in the driver seat. And you control the pace.
sKit already goes slightly beyond the earlier outlined Audio Streaming Series scope. You should still go through the Audio Streaming Series step-by-step though. sKit doesn't cover all settings yet. At the relevant spots inside the Audio Streaming Series I refer to sKit.
I hope you'll enjoy the results.
...how they work?
The powering scheme. The handling of it to be exact. I've still been pulling plugs all the time for that very purpose. Pulling plugs in a lab is one thing, doing that in a living room is simply not acceptable on the long run. How do you tell your wife or kids how to turn on that DIY monster-stereo !?!? Push that plug, next this one and finally that one. Simply not possible.
I finally thought to get some Wifi controlled mains plugs in place. Neither Dect, infrared nor bluetooth controlled devices made it on my wishlist.
Let see what IoT (Internet of Things) projects are offering...
Anybody out there still ripping CDs? Or is it just me. ;)
Recently I figured that some tracks were missing. No idea when and why this happened. OK. Quick decision taken. Re-Rip the affected CDs. Yep - I still keep my CDs in the attic.
This article gives some background info and directions related to CD ripping and CD tagging.
Meanwhile this became common knowledge in - let's call it - audiophile minded circles.
As usual, I prefer reasonably (priced) highest performance solutions.
Usually a healthy mix of DIY efforts and commercial stuff gets me there.
by running LogitechMediaServer as server and squeezelite as a client.
This post, from a hardware perspective, pretty much relates to my
RPI I2S HAT DAC projects I've been running over at DIY-Audio.
Some DACs (TI PCM51xx family) have shown a slightly improved performance
while running upsampled material. That's the main reason for writing all this up.
USB-Audio Interfaces are pretty much commodity products nowadays. Usually they are Plug'n Play
Does it make U feel uneasy ( once in a while ) of not being in control of something?
RU the type of person who takes it easy - "What I don't know, I don't care to know..." ?