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post #37281 of 37382
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Originally Posted by OC'ing Noob View Post

Fostex TH-X00 with detachable cable mod and E-MU ebony cups




So, can you compare to them to your TH-X00 mahagony and give us a review of the comparison here? gimme gimme gimme
    
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post #37282 of 37382
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Originally Posted by caenlen View Post

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So, can you compare to them to your TH-X00 mahagony and give us a review of the comparison here? gimme gimme gimme

In due time. Cleaning up house for guests.
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post #37283 of 37382
Quote:
Originally Posted by Tjj226 Angel View Post


As for the straight wire with gain thing, it is actually a quote from a guy named quad. He made really high end tube amps long long ago and he said the perfect amplifier is a straight wire with gain.

Gain is a measurement of amplification. So what he was basically saying is that he wants a magical piece of wire that can amplify a signal with 0 parts in between to degrade the sound.
Absolute linear device does not yet exist, even today in advanced era. Today´s transistors are not straight enough, quite a curvature. DHT are closest to ideal amplification device. biggrin.gif
Devices which got most praise for sound...are...directly heated triodes from old era designs 1920...1940.
I see a diy made preamps with "01A" tube surrounded by modern components and circuitry. Signal amplification is done just by tube, rest is for support. People swear that is best preamp they listened. https://frank.pocnet.net/sheets/029/0/01A.pdf

http://vinylsavor.blogspot.sk/2013/10/tube-of-month-ux201a.html nice blog

Globe glass is older date, for example mica spacers were not used, just a glass internals. This is ~1925 smile.gif Globes are hot stuff on ebay. Lovely 2A3 design comes from 1932, 300B is from 1938. Noval socket since 1950´s, octal early ~1940´s

The 4212 i mentioned before biggrin.gif http://www.r-type.org/pdfs/4212e.pdf filament alone sucks 84W
SE 1500V amp, hefty 50W output (anode supply 255W+filament 84W = 339W consumption ~15% efficiency):


Edited by pietro sk - 4/29/17 at 12:59am
    
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post #37284 of 37382


Modi Multibit arrived today finally. FedEx lost the first one. If a black zDAC came up at a decent price I would be tempted but this little box has a great sound.

The Jot was a great all in one be box for my bedside rig and took up less space on my night stand but this combo is so much fun to listen to.
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post #37285 of 37382
Quote:
Originally Posted by pietro sk View Post

Absolute linear device does not yet exist, even today in advanced era. Today´s transistors are not straight enough, quite a curvature. DHT are closest to ideal amplification device. biggrin.gif
Devices which got most praise for sound...are...directly heated triodes from old era designs 1920...1940.
I see a diy made preamps with "01A" tube surrounded by modern components and circuitry. Signal amplification is done just by tube, rest is for support. People swear that is best preamp they listened. https://frank.pocnet.net/sheets/029/0/01A.pdf

http://vinylsavor.blogspot.sk/2013/10/tube-of-month-ux201a.html nice blog

Globe glass is older date, for example mica spacers were not used, just a glass internals. This is ~1925 smile.gif Globes are hot stuff on ebay. Lovely 2A3 design comes from 1932, 300B is from 1938. Noval socket since 1950´s, octal early ~1940´s

The 4212 i mentioned before biggrin.gif http://www.r-type.org/pdfs/4212e.pdf filament alone sucks 84W
SE 1500V amp, hefty 50W output (anode supply 255W+filament 84W = 339W consumption ~15% efficiency):


Oh believe me I know.

The whole straight wire with gain thing is more of a design philosophy and I was kind of making a joke of it.

But yeah, you hit the nail on the head with the DHT tube. This is the first time I am hearing about the 01A tube though. It looks reallllly interesting.

It actually looks like a 45 tube with a higher gain factor. I am currently in the process of trying to design the most linear amp I can possibly make, but I am running into issues with the preamp/driver tube.

I want to use a DHT driver tube, but I need one with enough gain where it has enough gain to avoid needing a second gain stage, and enough voltage to swing a 2a3.

I basically want to make a loftin white 2a3 amp with a DHT driver tube.
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post #37286 of 37382
Quote:
Originally Posted by silvrr View Post



Modi Multibit arrived today finally. FedEx lost the first one. If a black zDAC came up at a decent price I would be tempted but this little box has a great sound.

The Jot was a great all in one be box for my bedside rig and took up less space on my night stand but this combo is so much fun to listen to.

I do have to admit, it is rather gorgeous.
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post #37287 of 37382
Quote:
Originally Posted by silvrr View Post



Modi Multibit arrived today finally. FedEx lost the first one. If a black zDAC came up at a decent price I would be tempted but this little box has a great sound.

The Jot was a great all in one be box for my bedside rig and took up less space on my night stand but this combo is so much fun to listen to.

I honestly wouldn't bother with the zdac at this point. The zdac is kind of a really good middle ground dac that can allow new audio users to jump into high quality mid-fi for a fairly decent price.

The modi multi bit is breaking into the mid-fi realm, so the zdac wouldn't be a real upgrade.

The jolida glass dac or the timbre tt-1 would be the only reasonable upgrades that I am aware of. Every other upgrade I can think of is $$$$$$
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post #37288 of 37382
Quote:
Originally Posted by Tjj226 Angel View Post

But yeah, you hit the nail on the head with the DHT tube. This is the first time I am hearing about the 01A tube though. It looks reallllly interesting.

It actually looks like a 45 tube with a higher gain factor. I am currently in the process of trying to design the most linear amp I can possibly make, but I am running into issues with the preamp/driver tube.

I want to use a DHT driver tube, but I need one with enough gain where it has enough gain to avoid needing a second gain stage, and enough voltage to swing a 2a3.

I basically want to make a loftin white 2a3 amp with a DHT driver tube.
Likely you will need more gain, here are some medium-hi mu DHT.

http://www.r-type.org/pdfs/3a-108a.pdf

http://www.mif.pg.gda.pl/homepages/frank/sheets/144/3/3A-110A.pdf



I do not have info about DHT above µ30, if they exists let me know.
    
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post #37289 of 37382
I was never impressed by my Modi Multibit personally, I liked the Modi 2 Uber more than my Multibit, seemed like the Multibit pulled the music away from me a little bit and just a smidge lessened the airiness of female vocals, but at the end of the day this hobby is extremely subjective, ever since I discovered the power of the Type C port, my original Fulla is now knocking all my expectations out of the park.
    
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post #37290 of 37382
Quote:
Originally Posted by Tjj226 Angel View Post

I honestly wouldn't bother with the zdac at this point. The zdac is kind of a really good middle ground dac that can allow new audio users to jump into high quality mid-fi for a fairly decent price.

The modi multi bit is breaking into the mid-fi realm, so the zdac wouldn't be a real upgrade.

The jolida glass dac or the timbre tt-1 would be the only reasonable upgrades that I am aware of. Every other upgrade I can think of is $$$$$$

Yeah, I just have good memories of the zDAC. I was thempted by the Jolida DAC you posted the other day, about the same price as what I got. The size was a bit of a turn off though. I generally only have time to listen at night now and need something that fits on my night stand.
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