John Curl's Blowtorch preamplifier part III

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I know that I was happy with my system yesterday. A Raspberry Pi with SS drive, a $25 IQaudio BB dac feeding a pair of Elac UB5 speakers. Perfectly fine sound for painting windows and staring at the ocean.:) Amazon had the UB5 for $399 a pair. Andrew Jones has certainly covered both ends of the spectrum with his designs.
 
I'm perfectly happy with listening 16 bit cd's with 8x oversampling when i loose my temper with setting up a phono system, and i'm happy enough with listening youtube when i loose my temper with the cd's...For me this race for the perfect sound ended early this year...and i'm sure it ended for real after i've invited a friend of mine who set up the volume 4 times lower than i usually did to listen to music, telling me that he couldn't stand such volumes as the ones i used to ...yet he found my toys working very fine and he was really impressed with the result.
 
Here's a thought: the next time you are going to send one of your lengthy posts, first put it in a text editor and do a quick search-and-replace all instances of first person singular pronouns with your full name, then read the result aloud. If it sounds like something appropriate to a technical forum go ahead and post it.
 
Joe, I must be doing something wrong, and I am waiting for your kind advice.

I am not sure either what you did wrong? You know that with a perfect voltage source, that should not happen. Plain EE.

So Pavel, does it come down to this? I want to get on with you, but you play cheap tricks like that on me and expect me to fall for that? You can be better than that and not talking about the trick.
 
Just wait until you start designing your own circuits without copying other designers' work. After you layout your original circuits on PCBs, and build them up in your workroom, you'll be AMAZED at how much more critical your listening has become.
What layout software do you use (or do you do the thin black pieces of tape on acetate thing)? I did a little on a Telesys system in the mid 1980s, and only done ExpressPCB (really easy but locked in) since then. The common PCB CAD programs are huge, and I thought Autocad had a big learning curve.
 
I heard Altium is only ten grand, but I've seen a short demo, it's Teh Thing To Use when you have a 64-line data path between a high speed processor and memory, and need all the signals to "show up" at the same time. Might be overkill for audio projects.

I've attempted KiCad and the user interface shows up in the dictionary under "Horrid" and a few other adjectives. It has supposedly been improved in the last year or two, but I think I'm still too repulsed to try it and see.

The other big thing in hobby-level and cheap business design is Eagle, but some people have developed an allergy since Autodesk bought it a couple years ago, though the free version is apparently still free.

Or maybe I just need to put my nose to the grindstone. Who needs a nose anyway.
 
CircuitStudio is a lite version of AD that is free, I think. You can get a perpetual license of Altium for 4k or less if you wait for their "sales" and tell them you are trading up for something else. Still, not cheap. Cadence is cheaper but I have to say, I disliked the interface. I am told it may be more efficient to do work in once you are used to it, but I did not like it at all.

There is a big gap between affordable tools like Eagle (which I hate) and the really expensive stuff, it's too bad.
 
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I've lost count of the times someone posted 24/96 files to listen to and I pointed out where either or both the spectrum was brickwall filtered at 22.05kHz or the LSB's were on 16 bit boundaries.

Is that surprising?
If people think a record offers a very high sound quality (or just better than older versions) and is marked as "Hi-res" they tend to attribute the quality to the new label.

Although anecdotal, that was something Meyer/Moran already wrote in their article in 2007; the new so-called "Hi-res" material offered - according to their opinion - a much better sound quality than former records available as Red Book CDs
 
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More evasive maneuver, as expected.

Nah, your "FUD claim" so you have to bring the evidence that my post contained/was "FUD"; you surely remember "the burden of proof is on the claimant", don't you?

You were asking in the context of my post abot DF for listening test results; how could requesting informations what kind of listening test that should be, be evasive?

......Or you mean you don't post here with your audio business interest?

Exactly I don't post here with any audio busines interest. ;)

evasive maneuver above is because you have something to lose.... ;)

Nah, as is wasn't evasive, just requesting the missing informations from you, could it be that you were fooling yourself again? :)
 
Just before going AWOL: Youtube......The one inch analog master was transferred directly to SONY Super Bit Mapping Processor for CD mastering. No limiting, compression or equalisation was used at any point in the recording process. Track 2 is my favourite, download full resolution here: TheSibyllineFragranceOfGardenias.flac
Youtube is compressed resolution file, full resolution file is 16bit file as per CD release. Evidently the release copy is not dithered BUT that is the choice of the mastering team/producer and if Joe had meant HiRes file he would have clearly said so.

Joe didn't pose this as a listening test, just a recording that he likes with technical details of the recording chain. What's wrong with you guys, can't you read.

I have taken a listen on headphones and my system and I like the recording, I find it to be unusually pleasant and realistic and warm for a piano recording, plenty of piano recordings drive me out of the room, this one keeps me in the room. The Goop loopback version is even better. :cool:.

Dan.
 
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