Fidelity Research FR-64 vs. FR-54

Hi Raul, basically you are just blowing your own horn and boosting about your own design, as always! Do you even have an idea what IEEE, as mentioned by Lewm, stands for?

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.<

Maybe, unlike you, your hosts were just being polite, and not wanting to criticize your product in front of you. You were promoting / marketing your product during those trips, and if the hosts were so impressed with it, how come not too many of them ordered your product? How many units have you sold? I think the result just speaks for itself!

I clearly remember at least one highly respected member on this forum openly stated he preferred another design (tube!!!) to your unit!

You can always say you are ahead of others and your way is the right / best way, but then the result speaks it all!

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

That also doesn’t make any sense at all!

-The airborne audio feedback to your turntables is a fact (or are you denying physics?)

- The airborne feedback would cause higher distortion to the sound than distortion from the electronics.

- In your system, the room and the speakers would have higher distortion than the electronics. You don't know because you have never measured the signal at your listening position and compared it to the signal from the output of the phono / CD.

- If your system is that “glorious so low distortions”, the airborne feedback distortion should just stick out like a sore thumb. How could you not detecting it?

- You can’t detect the airborne feedback distortion because either i) your ears are not as sensitive as you think, or ii) your room / system has such a high intrinsic distortion that it masked the airborne feedback distortion!

Dear @lewm : It's weird that you did not mention nothing about tube or SS handling of inherent design noise levels. I want to think that you forgot to mention it and if not then was on purpose.

Can you share your thougths about, it's important how you see that main audio subject. If tubes are better: good and if SS are the ones: good.

Regards and enjoy the music,
R.

You all have wondered pretty far off topic, but since an event in my listening room with mentioned, I feel obligated to reply:
@rauliruegas My recollection is that while connecting your phonolinepreamp in my system a poorly constructed Omega Mikro power cable was stepped on and damaged resulting in a DC surge that reached the power amps and took out 2 tubes. When replaced all was fine. The fault lies in the Omega Mikro power cable (which the manufacturer wanted to charge near full price to repair -- leading me to trash it!), not in the OTL power amp. 
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. 

Everyone, Raul is correct that many who heard his phonolinepreamp then and the following day in @slipknot1 's (aka JoeG) system were very impressed with the sound quality, especially since most were fans of tube gear. 
IMHO, the reason none of them bought one was the obvious, we all are quite hesitant to buy gear from any new manufacturer, especially since we often change gear and depreciation is a huge factor with unproven, unloved brands. For any new brand to make it, it takes a combination of superior sound, unique features, and a few risk takers who enjoy jumping in earlier even at financial risk. Cheers,
Spencer 

Just to be clear, by tweaking Raul for his nearly crazy hatred of tubes, I do not mean to imply a similar negative bias against transistors. Perhaps I went too far in that direction, in order to get Raul's goat. (Raul, there must be an equivalent phrase in Spanish.)  I am quite confident that wonderful sounding gear can be built with either or both types of active devices. I like to think that I have an open mind in this regard.  But it is simply not true that "tubes" are inherently higher in distortion than are solid state devices, which is Raul's mantra.  On that point, I do insist.  And anyway, this is a sidebar to the debate about the FR64S, which is also a sidebar to the OP's question about comparing the FR54 to the FR64S.  Love it or hate it, the FR64S is meant to be superior to the FR54 by its makers. At least we got that much across.

I would welcome the opportunity to audition Raul's phonolinepreamp in my system(s).  I was lately under the impression that it is out of production.  Someone would have to loan me one.  It is quite possible for a low production, high end product such as that one to become a "cult classic" with enduring value and even the potential for appreciation.  People pay way over original price for such pieces as the CTC Blowtorch, the MFA Luminescence, the Vendetta phono stage, etc. (I owned two tweaked samples of the MFA Luminescence, and I much prefer my Atma-sphere MP1.)

Dear @sbank : No, I'm not using you. Far away from that. As you I have very good memory ( is an atribute God gave me. ) and I remember those great days with you people.

Things were as this: "  poorly constructed Omega Mikro power cable was stepped on and damaged resulting in a DC surge ", yes I made it by accident when I was trying to connect my unit that at that moment was the only unit switch on in your system and things happen when I was swtching on my unit. No other system item was on. What happened is that all the external and internal fuses in my unit blow and we can't listen the system with my unit. After this you and me gone to Radio Shack and bougth new fuses ( the original ones were expensive hi-fi tune fuses. ). Comeback to your house and my unit works flawless on that " accident " and was precisely in this moment when the OTL were swtching on and we listening for a whle with out no problem. The problem was latter on ( the other gentlemans already gone after the listen session. As a fact you and me were in a hurry because your friends were invited to that listening session and my unit was down! ) and I remember that you and me were trying to identify which of the tubes in the amplifier connected at the left speaker was the problem and we did it smelling it.

In the other side,I remember at your place that when Joe ( whom knew very well your system quality performance levels. ) was there and we were listening your system and playing with my unit he approach me close to my left ear and told me: " Raul you are a magician ". Certainly I'm not other thing than a music lover.

Anyway, thank's for your contribution and again sorry to disturb you that was not my intentions. Never is with no one every where.

Regards and enjoy the MUSIC not DISTORTIONS,
R.