SUT - electrical theory and practical experience

Dear @drbond  : Yes, is more easy posted that way that give an answers that affect you because what I posted seems to me is true.

 

Ignore is your proble. Fine with me.

 

You have a huge problem that I posted in some of my posts: why with your CH are you asking so " deep " in a SUT other than buy one of same preamp manufacturer? This has no sense to me but obviously has a lot of sense to you that are not 100% satisfied with the CH. Maybe I'm wrong.

 

R.

You have very short memory in purpose because you always want to win but this one. Even you don't remember your tale in Berlin with? Period., useless to derail this thread.

 

R.

@atmasphere  , that's what you wished but JC never came to support your tale. In that regards you are very bad looser, sorry.

 

Peace.

 

R.

@antinn , yes often I have those kind of misunderstood and yes is my fault but not you or me losting nothing with the posts other tha your gentle time. Sorry for that.

R.

@atmasphere  , maybe I explained in wrong way: of course that as the theory says it happens, this is not under discussion and maybe as intact said you can open the fifth thread about till you can win. Just do it.

 

R.

I forgot @mijostyn  to post: @antinn  too:

 

" and at 1.5MHz, the amp becomes unstable. "

 

R.

Dear @drbond  : ""  to be mostly irrelevant to the topic at hand, and mostly just arguing to support his perspective,....""

 

Is it that exactly what you already did it through all your thread and why a gentleman just from the very first page posted this?:

 

"" If I didn't know you were serious, I would suspect you of being a troll based on this sentence.  ""

 

and you following posting links trying to support " your perspective: don't you?

 

In the other side please show me 3-4 posts by me that were totally " irrelevant " and if you tell me then I can learn what or not do in the future. So I'm looking for your help. Thank's in advance.

 

R.

Dear  @atmasphere  : "  I am in disagreement with Mr. Der Veen on this topic.  "

 

Rothwell too and I learned that almost 20+25 years ago.

 

@intactaudio  : " I believe loading of a MC cartridge has a dramatic effect on the electromechanical behavior of the cartridge but that is a topic for another thread. "

 

Exist at least 4 long threads about in this forum, in all were very hot dialogues and that the end even that in theory exist the phenomenon that the cartridge cantilever could " suffer " of some kind of " stifness "  and even if happens Wynn proved in two of those thread with measurements in real time that the  effect in reality does not disturb the cartridge tracking levels and the one that really could " suffers " with that load/cartridge inductance and total nettwork capacitance is the bad phono stages designs but fortunatelly today not only Phono Stages have widebandwindth but high overload levels.

@mijostyn  could tell us something about because his phono stage has an over 3Mhz of bandwindth and high overload. Something as the phonolinepreamp in my system.

R.

The style of a stupid is to say stupidities.

 

To each his own.

 

 

@pindac  : " 

The thread now is grounded with ones intention to attempt to impress their Mathematical Preference as being the better over another.

This attempt to hold centre stage, is being met by others, with a countering of this  very obvious intention at large, especially where the Math has been used as the support for the notion being proposed.

The Mass of Users of Devices as a Listener, do not care for such a Topic of Discussion. "

 

Who do you think are to came here and tell us what to post or not?, tghis is asother internet forums a free one to post what we want on the audio world.

 

So if you can go to other forums to preach. For me you are no one especial and only other audfiophile as thousands of thousands out there.

 

Your statements are TOTALLY wrong like it or not. If you don't like what you read here then just do not read it.Period.

 

R.

Dear @holmz ​@lewm ​@intactaudio : My Denon AU-1000 just arrived from its measurements I ask and what I receive of information is that this exxtremely special custom made for Denon Murata SUT transformers has a bandwindth ( my hard silver wired . ): - 1.35db at 3hz ( FR is the champ in tihis frequency range ) and totally flat to -2.5db at 305khz. It's THD 0.001 and noise levels -105db. I understand that the Murata is c0oper wired but superior to the silver Knondo and Ortofon silver wired too.. For me is really good this Denon. Unfortunatelly I did not ask for its rise time.

 

I own other Murata SUT’s as Entré and Denon AU-340 and even that the Entré transformers looks similar to the AU-340 exist a tiny differences in favor of the Denon, both transformers hard wired with same kind of cable.

Lewm as I told you , the AU-1000 is really near the direct connection to the MC in my phonolinepreamp and this speaks a lot of its quality performance levels.

 

R.

Dear @holmz ​@lewm  : Good say it. Even almost all the OP links where full of science/math because as holmz and the op wanted is to UNSERSTAND it how it works and from where could comes or not the advantages.

 

R.

Dear @antinn  : The figures in the phonolinepreamp in my system was measured.

 

"   the amp becomes unstable. "

 

Not the one I own that was designed by a " genius ", not that really is a genius but his knowledge levels are at least at the same of any one of you and even could be higher than you can imagine. This is not bla, bla.

 

R.

Dear @antigrunge2  : " arrogant language without any knowledge basis for their argument. "

Please give us an examples of " arrogant language " from "  incredible how many people on A‘gon.

 

and if you can share with us from where or why you said " without any knowledge basis for their argument. "  Some examples could be fine.

 

Appreciated.

 

R.

@holmz  : No problem, my mistake.

 

R.

Dear @antinn  : Those LM op-amps came from now defunct National but the best bi-polar discrete dual is the MAT 02/03 that today were substitute by similar part by Analog Devices, that's not an op-amp. I know very well because Levinson used at its amplifier reference input boards.

 

Now, that theory/science in your links forgot that MM cartridges are not " severely limited " in frequency, we have several MM cartridges with flat response out of 100khz as Technics, Empire, Audio Technica, Signet, ADC, Azden and many others to mention here.

It's true that the S could distort ( inaudible. ) the cartridge signal if the designer does not takes in count that " science "

 

The phonolinepreamp in my system has a bandwindth over 1.5Mhz with 350 V/mseg but was designed with out any of those " troubles ".

Anyway, thank's for the links, very informative. We are waiting for the Holmz measures about.

 

R.

Dear @lewm  : "  I doubt any of us can hear the difference between 21 usec (high value for MC alone) and 23 usec (low value for MM. "

 

I always said the main characteristic of live MUSIC that can't be achieved by any room/system is: transient response, its speed. At the same time I posted several times that transient response in a room/system is mainly what makes the differences between different room/systems and between cartridges.

 

I posted what the electret cartridge manufacturer said on that critical subject:

 

" Response speed is general refered as transiente time and transient time is the figure of merit in comparison the ability of the cartridge to reproduce the instantaneous changes of MUSIC. ..........................................Musical sounds are transients by nature. ............................................These measurements of cartridge circuit are of great significance to the user and illustrate why the cartridge's electrical output network has such a profound effect on the overall performance of the playback . "

 

In your statement I think that some audiophiles can discern between those 3 micro seconds difference and that could says why gentlemans with a very high quality and resolution level systems are in favor of LOMC vs MM/MI cartridges.

In my today quality and resolution level room/system I'm aware of that kind of differences between a LOMC and a MM cartridges. Even through my fine tunning time over the last 2-3 years ( maybe a little more. ) the quality performance levels between MC and MM more and more were nearer and nearer in between and today if with your blind eyes you listen in my system a MM cartridge you can´t know if it's a MM or LOMC one. Differences as so tiny that you really need to know for sure what to look for to distinguish in between. Yes, color is a little different, to little.

I can say today that in any good room/system as nearer the quality performance level is between MM and MC as better your system overall quality performance levels.

The critical importance of transiente response/speed/rise time is obvious in the Lyra example I posted where reviewers and the majority of cartridge owners prefer by a tiny margin the Etna/Atlas SL versions vs its higher output models. I experienced that with the Kleos and Kleos SL.. Yes, the SL are a little faster with better transient response and this is what makes the difference because both cartridges have the same design and tested in the same room/system.

I know there are no measurements behind that ( or maybe are and I just don't know. ) but all those evidence are or could be in some ways facts to take in count when we are talking of the transient response importance in the whole quality performance of any room/system.

Maybe you have a way different opinion, that's mine.

 

R.

Dear @tmasphere :In any case what's false  is what you posted because I gave several evidences/facts/measures and in the 99% of those threads you was there and you never never proved with measurements that I was wrong, never ever.

 

My comments about tubes was in specific for tube+SUT or all tube phono stage designs and if you can prove that tubes in that specific area are better then design an all tube phono stage and send to STereophile for JA can makes the review. Your bla bla as almost alwyas are only bla bla and never can prove what you posted in this specific area.

 

" Mediocrity " means " average " and in audio the 80% of audio items according with a " normal curve " are inside that average/mediocrity level. Over that average  10% are the true high-end and at the other side of the curve are the 0ther 10% that are the really bad designs.

 

My comments on the RIAA deviation audio item is not an attack but a measured figure.

 

R.

 

Dear @lewm  : That manufacturer said that a LOMC ( with out SUT ) has a rise time between 15 to 21 microseconds and MM between 23-31 msg. ( all those depending of total capacitance electrical network. )

But his measured the MC through a SUT was 30 micro seconds.

 

Note those differences in between the LOMC and the LOMC+SUT+IC cables.

and subjectivity always told me that MC are faster but JC posted in that way in the long MM thread and faster than MI too.

 

I think that Holmz today measures could have certainty and under the control you ask for because we will know with wich cartridges in use and which SS active high gain phono stage and the SUT used.

 

R.

Dear @atmasphere : I think that with out an explanation your statement is a real attack directly to me:

 

" This entire post is rubbish and false, including the ad hominem attacks. "

 

Why " rubbish " ? why " false " ? and why personal " attacks " and to whom those supposed " attacks " ?

 

R.

 

 

Dear @lewm  : You have a misunderstood because was not holmz who has the source, was me who asked him to make measurements taking advantage that he bougth the CBS STR 112 test LP and he said: yes but you need to read carefully all the posts about to at least have the correct info before make a post.

You need to re-read where I posted about where the electret cartridge manufacturer did not gives all what you are asking for and with unknow IC cables SUT.

Was a serious manufacturer and seems to me trusty one but you ask information as if you were the customer that " paid " to the manufacturer to make the test under your " specs " and this just did not happened.

R.

Dear @intactaudio : It’s not that " do not align with your measurements " because the issue is not about just measurements.

All tube phono stages needs/necessary a SUT for LOMC cartridges and the ones active high gain tube ones are around mediocrity even the effort of the designers that’s it’s not the issue too.

If you have enough/deep live MUSIC experiences seated at near field position then you know that tubes and specially in phono stage is not the best alternative but an SS one and if you think it’s rigth then not because I say it but you are way wrong no matters what and I can prove it with facts as I did it in hundreds of threads here and in other internet forums.

 

I know that I don’t like you but that is up to you, not my problem. I never let that attitude against " some one " let me post with that kind of attitude, normally I’m unbiased about.

 

I never think to use the information you share about the RIAA deviation of your unit that as I said on the subject goes around mediocrity with that 0.66 db " fligth " in the RIAA that's good for you because is your design but that's a shame for a RIAA phono stage.

R.

Yes, solves nothing because it's not the real issue. Do you think that any MM cartridge is faster that your MC2000?, today I know that MM are near but still behind LOMC cartridge with an output level no higher than 0.4mv.

 

Btw, in this week I will pick-up my Denon AU 1000 that rigth now is under measurements mainly bandwindt and distortion levels. We will see.

 

R.

@lewm : What words of this posted statement you just did not understand? :

 

" 300khz is an exceptional case, normally good SUTs goes to 60khz-100khz "

 

Now: " It was you who posted the information that your vintage SUTs had such a wide bandwidth "

 

Wrong, that bandwindth is the exceptional Technics SUT.

Solve what?: your wondering.

Btw, those measures were SUT and added IC cables.

and it’s not for me only that the LOMC cartridges are faster than MM ones: IT’S OBVIOUS. Not for you ok, follow wondering is fine for me.

 

R.

 

Dear @chrisoshea ; That gentleman that pass away was a tube lover and this and no other is the reason of his " fondness for SUT ", the SUT down there is a mustto have a necessity a " bad " necessity.

@lewm stop to wondering and solve it, in the mid time common sense is just common sense an a good response at least for me. Not for you? then solve it ! !

Btw, 300khz is an exceptional case, normally good SUTs goes to 60khz-100khz like LOMC cartridges and MM too.

 

R.

 

Dear @lewm  : You tell me, don't only gave an " ask " but what do you think or your explanation about because the facts are that a MM cartridge vs a LOMC+SUT has faster transient rise time, at least was what measured tells about.

My take is that a LOMC cartridge say 0.22 mv amplified by an active high gain phono stage is faster than a MM. I never did a comparison measurements in that scenario.

Noe it's not only the added SUT but IC cable and connectors too and all these could be the culprit to slower transient response.

 

If you have a way diffrent " idea " then share with us.

 

R.

tHOSE GENTLEMANS SAID:

 

" These measurements of cartridge circuit are of great significance to the user and illustrate why the cartridge's electrical output network has such a profound effect on the overall performance of the playback . "

 

r.

Dear @holmz  : This is what the gentlemans that made it the rise time measurements said and through the internet looking for bipolar, FET or tube rise time measurements coicide exactly with:

 

" Response speed is general refered as transiente time and transient time is the figure of merit in comparison the ability of the cartridge to reproduce the instantaneous changes of MUSIC. Transiente rise time is determined using a square wave test signal  ( 1khz. ). The transient rise time is the time elapsed from the point of the leading edge wen it's at 10% of maximum height to the point of the leading edge is at 90% of the maximum height. . This is the accepted engeneering measurement method which uses the most uniform segment of the leading edge to measure the transient rise time.Musical sounds are transients by nature. "

 

Differences between the MM/MC other the kind of motor design was that the LOMC cartridge was paired with an additional SUT and this is by common sense why the MM is faster in that transient rise time when obviously must be the other way around. SUT/cables is the culprit. Maybe not?

 

R.

 

Dear @holmz : Maybe you are rigth but today I know that the best SUT goes from 2hz-300khz almost flat and you have to think that are electronics that have not even that bandwindth.

 

My point about rise time is something different because transiente response live MUSIC is what " makes " MUSIC that at the end is a concecutive transient response notes.

By its design construction the fastest magnet cartridge is the LOMC against MM/MI/IM designs however the transiente response rise time at 1khz was measured and MM cartridge is fastest that a LOMC/sut combination and as I said the SUT made " slower " when thing must be the other way around.

With out facts my common sense tells me that a LOMC through an active bipolar hifgh gain design is way fast than the same LOMC cartridge + the additional IC cables and the SUT it self where both signal must pass through. So transient response that defines the notes/harmonics is slower through a SUT and this sole characteristic is an additonal and crucial disadvantage for a SUT.

All we know that, for example, the Etna SL quality level performance is better than the Etna that has higher output level, that’s higher inductance/impedance. Transient response rise time in the SL is faster.

 

R.

I forgot that rise time is from steady to the time to achieve 10% to 90% of the step response.

Dear @holmz  : Things are that's really weird that the rise time in a MM cartridge been faster than in a MC cartridge because it must be the other way around and maybe was the SUT who could had the culprit, at least everything point at the sut.

 

R.

Dear @holmz : Could be interesting to make some tests looking for the transient response rise time of a cartridge in an active high gain phono stage and other using SUT.

 

Exist a very old measurements made it by an electret vintage cartridge designer where he found out that the rise time of his designs was 2 micro seconds at 1khz generated square wave ( Osciloscope. ), moving magnet 25 micro seconds and a moving coil through a SUT 30 micro seconds.

 

That rise time is critical in transientes response by obvious reasons and you like to make measurements maybe you can do it. Just curious.

 

R.

 

 

Dear @holmz  : What Dover posted. You can read the link rigth from the Ortofon cartridge/SUT specs and then the measured sqare wave.

 

R.

In Georgia with Aolivero he owns the Proteus, Dallas with Albert Porter the 47 Labs, with the group in San Diego Lyra Skala and in the same area a gentleman with all Air Tigth electronics and with Air Tigth cartridge too. Other cartridge Allaerts and over there in a shoo-out vs Dartzeel  with 3 different cartridges the owner of this unit made one load impedance change that in the Dartzeel and in the Essential nothing change and even the owner prefered ( not night and day differences. ) the Essential. In other place Dougdeacon with the Universe II and in Boise the Lyra Olimpos. I can't remember the cartridge at @sbank  place .

Dover, have you an explanation?

 

R.

Dear @dover : Yes, is totally stable. Now, till today 7-8 other owners never reported issues about and satisfied with their units.

A " trouble " with the phonolinepreamp is that any load resistor change means to unsolder/solder the new one and to do that we have to open/take out the top plate and make the job carefully because the boards are 4 layers and we have to make 2 changes because is a dual mono design.

During the unit presentation/show in USA I was at around10 different room/systems with different cartridges with no compliant for the system owners.

I was not the designer engeenering in chief but I learned a lot down there and maybe theory not always works as should be depending of the kind of design.

Rigth now I have not a clear explanation why performs so well against the 10x load other than minor SPL changes where noise level is no issue due that the unit has very low noise and distortion levels.

The audio friends at my place with their own cartridges almost always were " impressed " by what their cartridges showed here through this phonolinepreamp.

Jaundiced? you can be sure that’s not that way: theory vs real facts, including measures during prototype tests.

In my vitual system says: " current mode " design ( what José stated. ) that comes from around 15 years ago and perhaps not estrictly " current mode " by today standards or a current mode " variation ". The issue is that works in excellent conditions over any " scenario ".

 

I can remember very clear that when I was showing it in Houston at a top Agoner and today reviewer ( he owns Rockport TT , Acapella Triolon’s, JC-1’s, ) that his Lyra was out of work in the same just time he was showing his system in its dedicated room and when the Lyra " hit " the first LP grooves he took in count that the Lyra was with out stylus : just disappeared and then we chage it by a Clearaudio he owned and we made the set up in his Rockport and he was really " surprised " for what he listened through my unit ( yes 100 ohms resistor ). Here what he posted:

Audiogon Discussion Forum and this the first time down there:

Audiogon Discussion Forum

Audiogon Discussion Forum this gentleman with a Ruby2 in a Triplanar.

 

This the first version of the unit and VDH cartridge:

Audiogon Discussion Forum

another ones:

Audiogon Discussion Forum

Audiogon Discussion Forum

and I can go on andd on. Lewm owns a 3160 and mine is the 3180.

 

Other cartridges as the Magic Diamond in a Walker TT in Phuladelphia with 15-20 listeners including Lloyd Walker him self and other presentation in San Diego with 15-20 listeners at an Audio Salon big audio distributor. Different cartridges same " resistor ".

 

R.

 

 

R.

 

Dear @holmz  : In the good old times cartridge reviews where really great with all the information you can imagine. Here the LOMC Ortofon MC2000 ( that I owned ), page 83:

https://worldradiohistory.com/Archive-All-Audio/Archive-Audio/80s/Audio-1984-12.pdf

 

R.

 

 

Dear @phoenixengr  : " My point about the specified impedance along with the output voltage was to make the necessary gain calculations easier.  "

I was very clear and stated that my phonolinepreamp is an active high gain design and I can tell very good design or at least competitive today.

Why should I care about gain  when here I explained and told you that " other that SPL changes " whic other advantages? and I posted that we had not changes in FR.

I'm not talking of phono stage + SUT.

 

R.

Dear @dover  : Yes I did it during the " thousands " of tests with the prototypes of the phonolinepreamp and through measures and listening tests the only parameter we can been aware was changes in SPL but not in FR but additional to that normally LOMC cartridges come with the " rigth " internal resistance to work very good looking those 100 ohms. Clearaudio is something espcial with those 50 Ohms.

 

R.

Dear @phoenixengr : If LOMC cartridges are almost no sensitive to load impedance then which your real point that I don’t understand for sure and which is your solution and advantages on the cartridge quality level performance?

 

For some years in my system the active high gain phono stage came with a 100 ohm input resistor and through all those years I had not any single trouble ( that I been aware of. ) with several and different LOMC cartridges that I owned and own.

 

" recommended load impedances are specified over a large range (100Ω-1K), and they are all usually 10x the cart source impedance so the voltage divider effect will be small, but in some cases, it could have a significant impact on the output. "

 

Ly ra states that load range with its different cartridge models and Ortofon says over 10 Ohms even that its cartridges internal DC resistance is 7 Ohms. Clearaudio even does not gives any advise and in all its LOMC models the internal cartridge impedance is 50 Ohms and I tested the Goldfinger in my phono stage with n very good cartridge quality levels. I owned/own the Discovery and Insider Gold that came with the same internal impedance and again I had no trouble with even that in the past the Clearaudio advise was over 500 ohms ( 10x ) and that I remember that input resistor was not changed  but before my today phonolinepreamp I owned the Classé DR-7 that is an active high gain design too and performed very well with that same resistor value.

 

So other that a change in SPL which is that " significant impact on the output generated by the cartridge not by the phono stage it self but the cartridge that’s what you and me( I understand ) are talking about.

Your answer is appreciated. Always is time to learn for all of us.

 

R.

 

Maybe just maybe drbond is just " trolling " in his latests posts, lewm in the very first page of the thread posted:

 

Audiogon Discussion Forum

 

Of course that the op as any one of us has the rigth to post almost what ever we want.

 

R

Dear @intactaudio  : Thank's.  I understand that normally the dielectric in SUT is air but I can be wrong.

The only SUT silver wired I tested in my system vs SUT's cooper wired was the Audio Note Kondo that was compared vs the AT 1000T, Denon 340 and Denon AU-1000 and in all tests I prefered the cooper wired SUTs ( phono input 100k. ) and you the silver wired ones.

 

Maybe the SUT kind of wire is more or comes along with the room/system and owner targets. Different with speaker croosover inductors where silver is superior to cooper wired and ribbon shape over rounded ones.

 

Btw, the Kondo goes down to 2hz ! ! and Audio Note builded around the end of the 70's a SUT with an exceptional FR: 2hz to 200khz at -o.5db and 0.001% distortion. I never seen in the market and I don't know neither if was silver wired but probably not because was at the midle of Audio Note SUT line.

 

R.

 

Dear @holmz  : " There are all sorts of hypothesis as to why the metal choice might impart a different sound, but most are a bit light and fact and oversubscribed in magic.
It is possible that the dielectric is as important as the metal. "

 

Dielectric, yes I think with out facts its importance as a wire insulator and with out facts too the qualitlevel of the of the cooper/silver wire.

@intactaudio  audio that were posting in the thread can put some " ligth " about because he manufacture SUT either: cooper or silver and normally his customers prefer silver material over cooper.

So, Dave hopefully you can share your know-how and experiences about.

 

R.

Dear @drbond  : Can you share which is your target with all those internet links you posted?

Btw, every one but you knew the Rothwell information because it was posted several times in several other threads over many years now.

Do you think that are discovering the " black thread " ?  Please, wake up.

 

R.

Dear @drbond  : " would also logically favor an integrated pre-amplifier / amplifier over separate components, "

 

Not really, I am in favor that the amplifier stays as nearer the speaker as we can and that's why I use monoblocks with really short output cables that are soldered directly to the speakers external modified crossovers  where each speaker driver frequency range has its dedicated crossover/cable that goes soldered directly to each driver.

 

No, what I'm in favor is for a Phonolinepreamp unit but separates amps.

 

R.

@drbond  : What happens with an external SUT about all those additional " steps " where the cartridge signal must pass through is almost the same when the cartridge signal from your CH must goes to an external line preamp and that additional step makes nothing but signal degradation but exist something additional in your electronics and is that the cartridge signal suddenly must pass through a way different line preamp design not a CH unit to preserve at least same " signature ".

 

That's why normally is better to own a Phonolinepreamp where we have to add nothing to the cartridge signal.

R.

Dear @alexberger  : Great.

 

R.

Dear @drbond : The signal in a SUT pass through the primary windings and the by induction runs in the secondary windings. This proccess means degradation levels. Now, if signal does not pass through " meters of wire " as you said then why with the same SUT overall characteristics an EMIA cooper SUT " sounds " different " than a silver wired or why a silver crossover inductor sounds different than the same unit/same manufacturer cooper inductor.

Along all what happens inside a SUT: what does the cartridge signal passthrough in your CH with an additional SUT?

 

signal must goes through the SUT female input connectors and solder joints along the IC cable and the cable male connectors and solder joints. Same proccess to the other side/output of the SUT.

In an active high gain unit instead all those kind of tourtose paths signal need a pair of bipolar devices. I could think that your CH is a good design with no RFI problems down there and with wide bandwindth and high overload margin.

I think that you are trying to justify your self a SUT in your system that makes no sense to me but always is an alternative. Just try it, no problem for any one and in this way you could learn something about or confirm what you already know.

You do not need " scientific papers " because no one that I know already makes in real time simulations with both kind of designs to look any kind of measurements you can have in mind.

Banwindth limitation in a SUT is a disadvanatge vs active designs and this you can attest when you paired your CH with a SUT through test listening sessions with the same LP tracks, is so obviously that only a " deaf " man can’t distinguish in between but you have to experience it.

Remember that my target is to stay truer to the recording, I don’t know wich your targets and I don’t care really because is you who are asking and needs to live that experience.

 

I posted here that my special modified Denon /Murata SUT in my phonolinepreamp, where the dedicated dual mono MM is nothing but a first rate design, performs really good but a " little " short to the active high gain  dedicated dual mono MC bipolar stage.

R.

Dear @drbond  : In my first post in this thread I gave you the answers.

 

You are using the CH unit, please ask your self: WHY?

 

R.

 

Dear @o_holter  : The best SUT is no SUT at all. If you want another all tube unit where maybe you can use that Lyra SL cartridge you like then exist the Wavesteram Kinetics  designed by Scott Farkland:

 

Wavestream Kinetics Archival Phono Stage (theaudioarchive.com)

 

R.

 

 

Dear @lewm  : can be very competitive with the best voltage driven stage. "

 

Why do you think that Palmer choosed voltage instead current design?

 

R.

Dear @alexberger  : Tamura are if not the best out transformers one of the best out there.

 

Now, you are just fine with those 26db of gain and if you want improve that SUT then take off all those impedance swiths and let direct solder to the one with your EMT.

 

R.