XXHighEnd

During 20 years I used valve (or tube) amplification until I was tired of tube rolling looking for the "perfect sound". Then I decided to live with the imperfection and to work less. So I took the solid state route, I went even further and got sticked to the class D amplification. I´m happy with the sound, spend less money and now listen to more music than before, but...but the old tube sound, once in a while, knocks at my door. I found a way to open this door and let the tube sound come in. How? By changing the SFS values.

Based on boleary´s settings, which for me and so far are the best settings I´ve ever tested, I tried different SFS values, from the minimum 350 to the maximum 430 - the latter was the value Peter used for the NOS1 (no USB).

The boleary setting with a SFS value of 350 in my system produces a sound that I would call "exact", what I mean is that it is a sound with no frills, great sound but a bit dry for my taste.

Increasing the SFS to the maximum of 430 (I could reach even 500 but that´s too much of everything) the sound is a little dense, thick, it is like if you use something like a WE300B in combination with other sweet tubes, nice sound but too colored. Nothing against the 300B or other tubes in a well implemented amplifier, just as an example.

Going down in the SFS setting I´ve found that the best sound is around 7 to 10 points above the 350 boleary value. So, for example, with 360 I found a sound that´s natural, well delineated with great soundstage and not at all aggressive.

All in all a great way to rolling tubes without tubes.

Juan

:rofl:

I have a similar one coming up, but I will post that in its own topic.

Hey Juan, thanks for the acknowledgement! Just so you guys know, I do some other things pretty well too--like driving cars. So, if anyone ever needs to know the best line or entrance speed into your favorite twisties, I'd be happy to show you how to drive a Blue (NOS 1) NSX or Ferarri! Ha!

On a more serious note, here's my initial thoughts that I posted on SFS back in August of 2010:


Peter has dramatically changed XX since this post and SFS's are much larger and need to be changed (here) way less often, but I agree with Juan that it is very much like tube rolling when you get the itch to play with XX settings!

NOS tube rolling ...

It´s really interesting how the sound changes as you get up or down the volume. I haven´t associated it to the SFS size however, but probably boleary is right. Hey, you´re really an expert in SFS and volume control and not only driving blue cars!.

By the way, take a look at the car, ok it´s not a blue car and I have not money enough to buy one, but a few laps on the track were not bad at all...

Peter, yes, NOS tube rolling, what else!

Thanks, juanpmar!  :thankyou:

One of the most useful comments I've seen lately, regarding the numerous settings in XX!

-I have to admit that I have lost track of how all the settings work, and which one to choose. Although I have been around here for some years and I own the NOS1 USB, the whole XX concept has become somewhat overwhelming. Work, wife and kids fill up the calender. During the week, my quality time in front of the stereo is limited to only a few hours. I prefer to use those scarce moments listening to music, rather than testing out, rebooting and A-B'ing the same track for an hour. I wish there was an updated "quick setup guide" for XX. Maybe it cannot be done. Perhaps not, due to the variety of PCs in use.


PS: Although Peter is living by a lake, it would take a miracle for this message in a bottle to reach him. But I am a patient man. I have time to wait.  :whistle:

I had a tv that had a picture quality setup wizard that was awesome

instead of showing the color values, it just had the user make a series of choices:

"which picture do you prefer": (using identical images with different values applied, side by side)

a or b

and it used images that for each setting, emphasized the effects

maybe a similar setup "wizard", could be arranged for sound quality. using samples for each setting that emphasized the effect being altered at first,

then allowing the user to run specific music through the wizard
a tune/eq on the fly sort of deal

the ability to have track specific setting, and save to user selectable presets

I'm sure once the actual engine is done (like anything is ever done) being developed then the interface is the next thing to dial in

love your work peter

disclaimer: (I am an admitted tube roller, waiting for a matched quad of Gold Lion KT-88's to arrive any day)

IMHO The sound of tube amplifiers (DHT SE) operating on horns - the best ever.

Renaissance-25SE

Single-ended tube integrated amplifier with output stage of the legendary directly heated triode GM70. This model is the quintessence of the principles of creating uncompromising High-End amplifier and carries the idea of the revival of this High-End Audio. Development lasted ten years, during which have been tried all possible options for circuit design of tube amps using the best components. The result has been found ideal scheme and its implementation.

Carnival Ultra

Horn speaker system with plasma high-frequency transducer. The final stage of High-End audio channel must have the highest resolution and clarity, which can not be achieved without the following principles: high sensitivity, the maximum dynamic range and bandwidth frequency response, minimal distortion. All this can be implemented only in large, full horn systems with plasma high frequency emitters. Carnival Ultra system fully complies with the principles outlined above and reaches the level of art in music reproduction.

Hi pedal, thanks for your kind words.
I recommend you to use the boleary settings and play a little with the SFS, that´s it!.
I wouldn´t look further, as I said before these settings are terrific and you (and everybody else) can take advantage of the work made by boleary, mostly if you want to enjoy the short time you have to listen music.

Hey boleary
Yes, but still there is a change in the SQ if you maintain the SFS fixed and change the volume. As you know, varying both things at the same time to find the best sound for each song is time consuming and tiring.
Since I found your (boleary) settings I use them with just the slight SFS change I´ve mentioned, and I use it all the time with all the music and I´m very satisfied.
However I´m in the waiting list for the NOS1 USB upgrade and then all will be easier and even better (I hope), which is to say a lot!.

Hi sinister,

I´m sure those are fantastic components.


I can agree with this words.


I can´t agree with this words, sorry. Like many things in life there are different ways to get there.

Juan

Hi juanpmar,

 All types of speaker systems except for the horn narrow dynamic range, resolution and e.t.c., a large sizes derived from the laws of physics. If you want a really highest quality sound then the horns, there is no competition. Plasma high frequency emitters have also shown their superiority over all others, you can check yourself.

Interesting site: http://www.higherfi.com/spkrlist/speakerlist.htm

Another in a series of SAD:

Grand Opera

Horn speaker system with plasma high-frequency transducer Grand Opera is designed to sound great interiors. This speaker system has a terrific sound and dimensions (1300x1324x2800mm). This top model series will transmit full scale symphony orchestra, the best opera houses and concerts. It is recommended to build a home theater and stereo systems at the highest level.

Grom

Horn Subwoofer Grom is intended for use as a bass management in multi-band high-power systems for scoring a large area, can also be a complement to your home system. This unique subwoofer makes the dynamic range of 140dB at 20 Hz. Recommended for all fans of extreme directions of contemporary music.

I can agree with this words.
[/quote]

Hi,

I do not follow this argument,
everything counts, starting from the source to ....... .
Sh...t in, sh...t out.

Joachim

Out of 10 respected ultra high-end experts that you ask 7 will tell you that the Rockport Arrakis is THE ultimate loudspeaker system. Sounds like a Horn with ultra dynamic loudspeaker capabilities. But the speakers this company makes are so without compromises, that I don't recommend anyone buying those without willing to and ga having the financial resources to fully commit themselves. The speakers are like a dynamite, they have SO much energy, that it approaches a real life concert. The downside is obviously.. Your acoustics must be Top notch.. And your components too.. And your cables too.. Haha..

And please wait for the poweramplifiers of Absolare at the end of this year. Unlike all the other companies out there.. This company really holds nothing back and only uses the very best parts (duellund, munchdorf, kondo condesators, etc.). You can easily put it next to Gakuon II at 1/10 of it 's price.. Haha wait till you see and hear.. The modified Mastersounds 845 they did won so many 'Best sound of the show' with the Kaiser Kawero 's. Well these are supposed to be 40% better than those... = me drooling...