John Curl's Blowtorch preamplifier part II

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The Chinese are doing this in their cell phones now. The "no or reduced negative feedback" claptrap of the PONO needs some substance to back it up.

Talk to Charles Hansen about that. The guts of the Pono are designed by Ayre and has a discrete analog output stage. And if you'll recall, Charles doesn't consider emitter degeneration to be "negative feedback."

se
 
SY seems quite proud of one of his home recordings..a guitar soloist, Peter Mulvey - Knuckleball Suite.
Perhaps I hear it differently, but to me it's hopelessly wrong.
The vocal and guitar sounds are overly distant, far too much room sound with some peaks/resonances, and a disturbing early reflection that intrudes strongly on one channel.

If Peter Mulvey can't get you tapping your feet, you're hopeless.

For recording quality, my Lee Barber recordings are better. Ditto Scott's Southpaw Jones recordings. The difference is the room- Peter was recorded in a very small space that wasn't symmetrical. And the recording shows exactly that. Southpaw and Lee were recorded in a large living room full of people. FWIW, mike distance was about a meter for Peter and Lee, about 2 meters for Southpaw.

What they all have in common is a totally uncompressed dynamic. If you're used to close-miked and processed studio Cheez-Whiz, this won't be your Nirvana. My "pride" was getting Peter here in the first place- he's an internationally recognized artist, on tour 10 months a year.
 
It seems terribly, terribly hard for some people to comprehend that the process of reading audio digital data is electrical - electrical means the possibility of interference effects joining the game - change the read mechanism process, and there is a good likelihood that the non-perfect process of translating that data to a listenable audio signal just slightly varies ...
 
It seems terribly, terribly hard for some people to comprehend that the process of reading audio digital data is electrical - electrical means the possibility of interference effects joining the game - change the read mechanism process, and there is a good likelihood that the non-perfect process of translating that data to a listenable audio signal just slightly varies ...

No, the reading of bit perfect files is provable. Jeez your computer would blue screen every few minutes otherwise. Frank you're in BS la-la land now.
 
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Direct -

Yeah. Richard's talking about eliminating the disks, whether they be CDs or LPs. But unless the data is just magically appearing out of the ether, or someone is direct streaming a live concert, that data has to be played back from some sort of storage medium, which is most likely going to be a hard disk. So how have you eliminated any disks?

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You have not eliminated the first storage medium... the Master. Unless, streaming Live. Just eliminating all the other disks like CD or LP. That alone is very significant... the process to make a disc (LP or CD) and the process to retrieve from those disks is all gone. And, what a breath of fresh air it is to hear it that way --- direct.


THx-RNMarsh
 
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Richard, the storage medium is irrelevant - digital is digital, whether pencil scratchings on paper, or "The Cloud" - all that matters is that the digits aren't altered by some nefarious process - Windows, anyone? - or a brain dead producer. Where it hits the fan is how "perfect" that final conversion into an analogue signal is performed ...
 
You have not eliminated the first storage medium... the Master. Unless, streaming Live. Just eliminating all the other disks like CD or LP. That alone is significant... the process to make a disc (LP or CD) and the process to retrieve from the disk is all gone. And, what a breath of fresh air it is to hear it that way --- direct.

And the master is stored on... what exactly?

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What's Fremer...some website I haven't seen ?.

That would be Mike Fremer, who reviews for Stereophile.

Basically, the more you can manage to mangle a signal, the more he'll gush about it.

The best example of this was his review of Harmonic Technologies' CyberLight cables.

These were an analog interconnect that used electro-optical converters in order to transmit the signal down fiber optic cable. Of course electrical-optical converters are horrible for audio and need to be provided with a power supply as well.

Normally Stereophile doesn't do measurements on cables, but because they were essentially an active device, JA did them this time.

The distortion and frequency response aberrations were soooo bad, JA said at the end of the measurements that if these were measurements of any other device he would dismiss it as broken.

But Fremer absolutely raved about them.

"Harmonic Technology's Light Analog Module Photon Transducer is the most significant single technological breakthrough I have experienced in my career as an audio reviewer. It is immediately superior in every way."

You get that? Something that mangled the signal so badly that JA would dismiss it as broken, Fremer believes is a huge technological breakthrough and superior in every way.

That he still has a career as an audio reviewer is testament to just how bankrupt "high-end" audio is.

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Go Charlie go! I'm going to try the PONO! I already have a Sabre dac. and it ALONE does not do it for me. This might be a start to a better digital reality for me. The heck with you guys. You are already satisfied.

Hi John,

This thread is moving so fast, but I'll attempt again to sneak this question in. What do you think of the Linear Systems LSK389 dual jfet? Do you find it to be a superior replacement to the 2N5564/65/66? Are there any other similar devices manufactured today and readily available? Primarily looking for a good replacement part for the 2N5564. Thanks!
 
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Steve Eddy --- It does not matter..... Just as long as you dont have to go through additional intermediary storage using electro-mechanical process like an LP or a CD production/playback. But in todays practice, it (the Master) will be stored as digital/memory. ---but no more or additional electro-mechanical disks to play in order to listen to the music. Its a lot closer to the source and sounds sooooo much better without the extra disk processes/processing to buy/use. A shorter path to the sound, if you like. It shows that intermediary LP and CD have been obscuring the sound a lot.


THx-RNMarsh
 
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Steve Eddy --- It does not matter. The music can be stored on an analog tape machine..... Just as long as you dont have to go through an additional intermediary storage process like an LP or a CD. But in todays practice, it will be stored as digital/memory. ---but still no other disks to play in order to listen to music.

Except that you lose something when you go from an analog tape machine to an LP. You don't lose anything when you go from one digital storage medium to another.

You can copy the file from the original hard drive the master was written to to a solid state thumb drive, upload it on the Internet to some sort of cloud storage, pull it off that, write it to an optical disk, copy that to an SD card, pop it into your Pono and you'll have the exact same file you started out with on the original hard drive.

So you're still not making any sense.

se
 
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