Fidelity Research FR-64 vs. FR-54

This thread is about FR Arms ...

@thekong : Comes for more?

Yes, I know you can't live with those gentleman opinions. But you can't do nothing about because that's the quality levels of the Essential first version.

in a meeting there through a listening session with around 8 gentlemans ( one of them a Dagogo's reviewer. ) and making comparisons things were that no one but me took in count that the system owner all tube ( four chasis/boxes. ) phonoline item had a serious fault: its left channel was down around 2db-4db against the rigth channel.
This sole fact can tell you the level of those 8 pairs of golden ears touted by you.

It's weird that all Essential owners I never meet them and never listened the Essential before bougth it.

Btw, please read carefully this thread's information about the first Essential version:

https://forum.audiogon.com/discussions/experience-with-raul-s-essential-3150?highlight=essential%2B3....

of those gentlemans only A.Porter and F.Crowder listened the 3160 ( third version. No one but me the fourth that only I owns. ). I was at their places twice.

>I reserve my opinion about the Essential 3150 quality sound reproduction against not only the Aesthethix one but about any other phonolinepreamp. This not belongs to my targets and I'm not the right person to do it because the Essential 3150 is an important part in the José and my life and we could have some bias in favor of the Essential 3150.<

I explain ( trhough an Agon post. ) in precise way that that picture that shows the cartridge mounted in its dedicated headshell was only to use it in my ad for sale Agon listing.

I never mounted the 13D in my system with that headshell: never.

Dear Dover, ''different opinions'' does not mean ''different thinking''

because we all think in the same way: from our premises to our

conclusions or deductions. The difference then means ''different

premises'' which are believed to be true . But ''believing '' has noting

to do with the truth. Something is true or false independent from our

psychology. .As is clear by your dispute with Raul you both have

different premises. BTW I also admire Reto Andreoli and own his

Magic Diamond and also Ikeda's 9 cantileverless cart.. Both are excellent

carts but Magic more easy to adjust. Reto learned the ''cart art'' at the

age of 15 by the famous Australian brothers. The other components

he learned himself while all his components are hand made by himself.

I got my Magic second hand his other components I, alas, can't afford.

thekong insist in that airborne high distortions in my system/room because he can't not onloy understand it but even imagine any system reproduction with out that ! ! !. Is not his culprit, just can't understand it yet ? ? ? and if insist in that subject he will not ever.

BTW, I wouldn’t recommend combining the phono preamp together with the power amp. THE SOUND OF THE TURNTABLE IS TOO MUCH AFFECTED BY VIBRATIONS TRANSMITTED THROUGH THE AIR AND GROUND. FOR TOP PERFORMANCE THE TURNTABLE SHOULD BE IN A SEPARATE ROOM/CLOSET ISOLATED FROM THE VIBRATIONS AND AIR PRESSURE FROM THE LOUDSPEAKERS. If you were to go with a combination phono/preamp/power amp together with the turntable in an isolated room, the speaker cables would likely need to be v-e-r-y long.

Dear @thekong : Look, I never said that air borne does not produce vibrations/distortions. In the other side, I already did it that test.<

No one deserves to stay sticky where he is " now ". We have to move to enrich our day by day audio life.

The majority of the people with high audio ignorance levels always try to hit me and that’s the only reason they post in threads where I’m. Problem with them is that in reality can’t hit me becfause they do not know audio arguments that could does it.
Typical example of that is @thekong , this gentleman post after post is trying that and he did not achieved and his frustation levels goes higher and higher then come back " for more ". Be that way if he is happy with.

While I have enjoyed a couple of solid state phono stages and tube linestages since then, I am open to considering all designs and never nod my head in agreement when you mention me as someone who "saw the light" regarding solid state superiority. I just sold my hybrid monoblocks and am replacing with a solid state power amp, but that doesn't mean I don't still appreciate virtues of all design types. I am a believer that there is "more than one way to skin a cat". Please don't use me as an example of the opposite.

Btw, I made 3 USA trips showing my unit and learning on what other people listen to. In those times and maybe even today almost all the people that I meet there and that were my hostess ( great gentlemans for say the least. ) were not prepared for my SS Phonolinepreamp quality sound level performance. Almost all were using tube electronics but even this fact no one posted here or told me that my unit was or is a " trash " of design, including Lloyd Walker.<

Dear @thekong : I can't detect it due to that glorious so low distortions in my today system/room.

• Tendency toward higher distortion than equivalent tubes: Really?

Dear Lew, ''...you are not entitled to create your own set of

facts''. ''Facts'' is the other expression for true statements.

Our reasoning consist of some implicite or explicite assumptions

(aka ''premisses'') which are believed to be true and deduction from

the premisses. That is why self-deception is the most common kind

of deception.

Dear @thekong : I can't detect it due to that glorious so low distortions in my today system/room.

Dear Raul, The below summary comes from the IEEE, not the "AHEE", your fictional bugaboo.  Note the first bullet point under the heading "Transistors-Disadvantages".  I don't want to go back and forth with you any longer.  You are entitled to your listening preferences, whatever they may be, but you are not entitled to create your own set of facts.  

Vacuum tubes – Advantages

• Highly linear without negative feedback, specially some small-signal types
• Clipping is smooth, which is widely considered more musical than transistors
• Tolerant of overloads and voltage spikes
• Characteristics highly independent of temperature, greatly simplifies biasing
• Wider dynamic range than typical transistor circuits, thanks to higher operating voltages
• Device capacitances vary only slightly with signal voltages
• Capacitive coupling can be done with low-value, high-quality film capacitors
• Circuit designs tend to be simpler than semiconductor equivalents
• Operation is usually in Class A or AB, which minimizes crossover distortion
• Output transformer in power amp protects speaker from tube failure
• Maintenance tends to be easier because user can replace tubes

Vacuum tubes – Disadvantages

• Bulky, hence less suitable for portable products
• High operating voltages required
• High power consumption, needs heater supply
• Generate lots of waste heat
• Lower power efficiency than transistors in small-signal circuits
• Low-cost glass tubes are physically fragile
• More prone to microphonics than semiconductors, especially in low-level stages
• Cathode electron-emitting materials are used up in operation, resulting in shorter lifetimes (typically 1-5 years for power tubes)
• High-impedance devices that usually need a matching transformer for low impedance loads, like speakers
• Usually higher cost than equivalent transistors

Transistors – Advantages

• Usually lower cost than tubes, especially in small-signal circuits
• Smaller than equivalent tubes
• Can be combined in one die to make integrated circuit
• Lower power consumption than equivalent tubes, especially in small-signal circuits
• Less waste heat than equivalent tubes
• Can operate on low-voltage supplies, greater safety, lower component costs, smaller clearances
• Matching transformers not required for low-impedance loads
• Usually more physical ruggedness than tubes (depends on chassis construction)

Transistors – Disadvantages

• Tendency toward higher distortion than equivalent tubes
• Complex circuits and considerable negative feedback required for low distortion
• Sharp clipping, in a manner widely considered non-musical, due to considerable negative feedback commonly used
• Device capacitances tend to vary with applied voltages
• Large unit-to-unit variations in key parameters, such as gain and threshold voltage
• Stored-charge effects add signal delay, which complicates high-frequency and feedback amplifier design
• Device parameters vary considerably with temperature, complicating biasing and raising the possibility of thermal runaway
• Cooling is less efficient than with tubes, because lower operating temperature is required for reliability
• Power MOSFETs have high input capacitances that very with voltage
• Class B totem-pole circuits are common, which can result in crossover distortion
• Less tolerant of overloads and voltage spikes than tubes
• Nearly all transistor power amplifiers have directly-coupled outputs and can damage speakers, even with active protection
• Capacitive coupling usually requires high-value electrolytic capacitors, which give inferior performance at audio-frequency extremes
• Greater tendency to pick up radio frequency interference, due to rectification by low-voltage diode junctions or slew-rate effects
• Maintenance more difficult; devices are not easily replaced by user
• Older transistors and ICs often unavailable after 20 years, making replacement difficult or impossible

In the other side, I never posted here or every where that my system has lower distortions than anyone else.

What I can tell you is that my system/room has lot lot lower distortions than yours.

I did it using Telarc 1812, Dafos and Firebird tracks not at 83db normal SPL but at 97dbs ( at seat position. ) with 109db on peaks and you know something: I can’t detect any vibration/resonance because that air borne.