review iPhono 2


I must be slow as I could not find a link to place this as a review. 

So, I have written about the 1st gen iPhono in the past, comparing it to the very fine Coincident phonostage which I believe is about $6k. I preferred the iPhono but I could just as easily imagine someone else going for the Coincident unit. In that review I thought the Coincident had a better sustain, decay and bloom while the iPhono was hands down the winner in the prat department. The iPhono made my feet move, the Coincident, not so much.

Later on I added the iPower to the fray and the iPhono shored up the areas it lacked. As a former owner of the very very nice Graaf GM70 I was a bit surprised and dismayed when I finally received the iPhono and heard it once fully run-in. I would not have shelled out the thousands of dollars I paid for the GM70 and the vintage NOS tubs I purchased to make it sing, oh and the $1600 I had to spend on the Ortofon ST-80SE SUT to use with the MM inputs of the Graaf as I could not get it quiet enough to tolerate with the MC inputs. The very small $400 iPhono basically did everything the Graaf did (with the iPower that is).

My reference phonostage for the last few years (and probably many more to come) is the fabulous AMR PH77 and I’m running it with a set of Bendix 6900 tubes which elevates its performance even more than the already stellar stock configurations performance. In comparison to my PH77, I found the 1st gen iPhono to be a bit thin and during crescendos it could become a little ragged. Still, it remained in my arsenal as a handy and trusty back-up. The PH77 is of course tubed and as we tube owners know all too well, sometimes they fail and you are down for a while.

Compared to most phonostages I have heard, some of them costing up to $9k I found the 1st gen iPhono to be able to hold its own in some cases crazy as it may sound it was just plain better. I believe AMR intended the iPhono/iTube to be used in conjunction as a sort of baby AMR PH77 and I ran it that way for some time and yes, it does share that familial DNA when it comes to sonic signature.

Move forward some years and I have in my possession the iPhono2 and the iTube 2. To say that the iPhono 2 is better than its predecessor is far too simple a statement. Mr. Fremer thought it to be at least twice as good as the original. I would agree with his assessment. Out of the box with the included iPower is shows far more prowess in the areas of bass but otherwise is pretty close to the original. After about 20 hours a bit more fluidity begins to appear. Again at the 100 and about the 340 hour mark big jumps occur in the areas of fluidity and continuousness. When you get to 480 hours forget about it!

This thing sounds like it has a tube in it, and I don’t mean in that classic overly warm soft rose colored sound that I found so fantastic when I was new to high end audio. No, I am referring to a pellucid but meaty embodiment and rendering of the music. A sound one would immediately associate with MUCH costlier gear.

Most of my listening has been done with my second turntable system which is composed of a Technics SL-1200 GAE with a fully broken in Denon 103R on a LP Zupreme 15 gram headshell and my London Reference. The phono stage then feeds the iCan Pro (best pre I have heard and I have owned 2 MFA Ref units, the baby Ref and the full Ref), the Tube Research Labs GTP 2, and many more. I have had in my system for evaluation the Veloce (battery powered) the Allnic L3000 and many others. From the pre it goes to the custom active crossover and then to a Graaf Modena for the mids, a Harmonix Reimyo PAT777 for the Raal Ribbons and a pair of Acoustic Reality Thaumaturges ($25K when available) for the woofers. The speaker is called the Encore and is my own design. I simply got tired of paying for passive boxes made of MDF with wood screws going directly into the glued wood dust and sold for tens of thousands of dollars but I digress :)

The sound is at once flowing and dynamic. It grabs and holds my attention and really gets my foot tapping. The sound is MUCH more refined and fuller than the original iPhono with no hint of raggedness during large scale bombastic music. For instance it scales far more convincingly on some of the more challenging passages in Hans Zimmers wonderful soundtrack to Gladiator. The original could sound a bit blocky if you take my meaning. It did not have the ability to gracefully scale the mountain so to speak. The iPhono 2 does it with much more ease and refinement.

Here is where it gets interesting. As good as the iPhono 2 is out of the box and it is very very good (and especially after 340 hours or more) in fact far far better than the DS Audio optical cartridge system that I auditioned, it can be made to sound a good deal better. Now this is my own thing, the iFi line of SMPS’s are admittedly super quiet and much better than most SMPS such as the ones inside my apple gear, but I hate them ALL.

I do not like green eggs and.., ahem. Sorry, just flashed back to Dr. Seuss when I thought of my aversion to SMPS’s.

I mean I understand why they are used, efficient,  cheaper to ship and inherently regulated. But they still hurt the sound of my system. As an aside I am actually having a custom linear PS built for my SL-1200 GAE to replace the awful SMPS that Technics installed. So to the point, I replaced the iPower with a linear regulated lab grade power supply. I don’t like hyperbole so I offer none but the result was nothing short of breath taking. There is a great deal more that can be had from that little silver box with a good (and I do mean good) linear supply.

Next I added the iTube 2 to the fray. As I mentioned before AMR always sorta intended this combo to be a baby PH77 as was or may still be mentioned on the iFi site. How to put this; everything I have said about the iPhono 2 up to this point; multiply it by 2 times again. Now you have that sorta living presence that the performers are in your vicinity. Things are rounder, more palpable and it breathes much easier. Again I powered the iTube 2 with a linear supply along with the iCan Pro. Please don’t misunderstand me, I lived with these units powered via there very good SMPS’s for quite a while and they made beautiful music BUT I knew there was much more to be had.

Like Mr. Fremer (paraphrased) stated, to get better than the iPhono 2 you are going to have spend much more and you still may not surpass this unit. I auditioned a $16K current phono stage that people rave over and my ears tell me that it cannot compete with iPhono 2/ iTube 2 combination.  I will not call this a reference phono stage. It is great and I listen to it daily but I reserve titles like reference for the likes of Ypsilon, VDH Grail SB and my AMR PH77. The little combo does far more than I could have imagined. It capable of truly astounding musical reproduction on a grand scale.  

Remember to let it run in for at least 100 (and I suggest 300) hours before you really start to judge it but my guess is it won’t take most people that long to know that this is special gear designed by some super gifted engineers who also happen to actually be able to HEAR. Thanks for reading and I hope this helps someone make a decision one way or the other. Happy listening.


audiofun

Showing 14 responses by rauliruegas

Dear @dougolsen : In this same thread @chakster posted this link:

http://forums.stevehoffman.tv/threads/heads-up-ifi-phono-2.627504/page-7

he has more information on that bs iPhono2. You have to remember that it's designed to a price point marketing strategy and that's what you receives for that. No giant killer but a bs of phono stage.

It can't be in different way it does not matters what the op thinks about.

R.
Clear and concise. Was my answer to your " wrong again ". Btw, of course is for benefit of some body that wants to know what to do or what not to do At the end only an opinion and nothing more.

R.
Dear @audiofun : I have to admire you because your in this thread touted pedigreé that you posted somewhere.

Certainly I'm not wrong as you said but problem is that you don't read very well my posts ( 10K+.).

As you said it's a " shame of phono stage " : For that price ate least we have to look for the only reason a phono stage has that name and this is because the inverse RIAA eq and here at any price  we have to look at least for an accurate inverse RIAA eq. curve in both channels ( mirrored ones. ).

You " shame of phono " ( your words. ) failed on both targets mentioned but thaose are not the only desired but not acomplished targets in a high price " shame of phono ".

we have to wait that the unit comes with an external power supply ( I understand the 77 has not. Maybe I'm wrong, please confirm about. ), that be a balanced fully diferential design, with a truly low output impedance ( that unit in fundamental bass range measures the very high 3Kohms ! . No excuse about. ), that both channels measures the same and go on and on..........

Exist no audio " giant killers " as many of us could think ( iPhono 2 or Denon 103. ) what exist is very low audio/music knowledge and skills levels.

Each one system is a and reflect those audio/music true levels. I already said it: money is important but audio music/knowledge levels is way more important.

Your touted pedigree was not confirmed through this thread and through your system where you have 6 different performance levels ( not matched. ) in your amp six channels and where you are satisfied with the performance level the Anna shows through the iphono2.

All that does not means that AMR/iFI products are good because are not only reflects your true audio/music knowledge levels and that your money level is way higher than that audio/music ........a confirmation of this is that you spended additional 2K Bendix in that true shame of phono.

Yes your targets are way different to mine that's to stay truer/nearer to the recording. That's you and your privileges.

We all have to learn day by day, I always try to do it and your thread helps me about.

Regards and enjoy the music not distortions,
R.


@audiofun   """  uses a discrete circuit that deliberately models the way tubes amplify audio. The TubeState creates a warm, spacious and...."""

THAT DELIBERATELY MODELS THE WAY TUBES..... again: DELIBERATELY and you said it was not a signal manipulation?

How is that?.
Dear @chakster / @audiofun : I know you in this phono stage regards and I can say you have not any agenda vs iFI productos as OP could think.

audiofun have really in deep " seed "/stycky on AMR/iFI products, this is something that makes no common sense for me if we take the very " high pedigree " he has as a music lover, audiophile and experienced engineering.

Obviously that each one of us have different target in our home audio system/room overall set-up, that mine is to stay truer to the recording.

From this point of view/target neither ( PH-77/iPhono2/SPL. ) can acomplish that target.

The more expensive PH77 and other that be an hybrid active device, that per sé precludes the target achievement, fail in a " shame " way ( for a 10K+ price tag. ) to meet the main PS characteristic ( other than gain. ) that’s to has an inverse RIAA eq. curve with at least no more than 0.1db deviation from 20hz to 20khz ( any decent low price PS does it. ).

This megabuck unit comes with specs that says it has a way high swing of 0.6dbs ! ! and its little SS brother a high 0.4dbs. Btw, the PH77 measured even worst than that manufacturer spec. Incredible for say the least and that was only for the standard RIAA but those gentlemans tooks its time ( marketing. ) to design its units with other over 20 curve alternatives even one that they " invented " because it never existed: the DMM !, go figure.

The AMR unit and the iPhono2 both are designed and marketed to a price point and with the 77 things goes beyond price point because the design has not the caliber of those over 10K+ price tag.

If I remember and even that for very good reasons I don’t support tubes one hybrid unit that I have respect for its designer comes with a RIAA swing of only 0.14db. My unit measures swing is 0.02db and I know that some people do not like to speak about specs but it’s really important to know where we are stand up.

OP, I know that that is what you like, it’s what fulfill your needs. Good for you.

Btw, that iFI TubeState trade mark is a signal manipulation it does not matters what you or otehr gentlemans can think, for me is a manipulation: iFI says in that way in its site as you can read in the link I posted.

No, my unit design has not SIGNATURE and was not designed looking for some kind of sound as you could think.

Regards and enjoy the MUSIC NOT DISTORTIONS,
R.


Dear  @audiofun : Perhaps you are not aware what was or what is the iPhono manufacturer touted: Class A TubeState that is touted here:

https://ifi-audio.com/portfolio-view/micro-iphono2/ 


Well this is what you can read in the manufacturer site on that Class A Tube State meaning:

Class A, TubeState®

The micro iCAN uses a discrete circuit that deliberately models the way tubes amplify audio. The TubeState creates a warm, spacious and natural sound, without the noise and distortion most tube circuits produce. This TubeState® circuit is exclusive to iFi, and it dishes out quite a large dollop of sonic improvement, over and above other mains powered Class A headphone amplifiers.  """


All the iFI use that TubeState circuit.


"""  uses a discrete circuit that deliberately models the way tubes amplify audio. """ 


that for a non-technical an expert engineering ( I'm talking of me. ) like you has a name: manipulation.


Btw, I never posted it was not a SS design.


"""  This tube vs SS nonsense... """


No sense? where are your facts where belongs your true foundations on that statement. Because not once but several times I posted irrefutable facts some of them scientific facts that are against your no sense statement.


Never mind, be happy with what you have, this is the more important issue.


Regards and enjoy the MUSIC NOT DISTORTIONS,

R.


Dear @chakster : The OP gentleman is very deep foubnded with his item and " extremely " satisfied with and this is the more important for him because he is who must live with and listenin it and ceratinly not only an audiophile but a music lover too.

Now, you are not the first audiophile in this thread that after listened the item was not really " jumping " for it and it can’t be in that way. Every item design was designed to a price market point and as you said even at its price range are better units and obviously other higher price items will be a lot better. That iPhono item is a tricky ( they manipulated the signal to achieve a " signature ". They did not let it " goes " the design with out " touched " with out changed. This trade-off was and is a privilege of any designer and I'm not questioning about. No one can do it. ) ) design and any one can read about in its site.

Anyway, please read something what I posted in this thread before:


https://forum.audiogon.com/discussions/review-iphono-2/post?postid=1415693#1415693

https://forum.audiogon.com/discussions/review-iphono-2/post?postid=1415865#1415865


Regards and enjoy the MUSIC NOT DISTORTIONS,
R.
Dear @audiofun : """  I designed the speakers and the crossover. """

that was quite a challenge for any one. I used several crossovers in those times, from the dedicated ADS to: Threshold, Bryston, Athena, Maerchant and the like. I made it modifications in all of them and when I decided stop the 3amp system what I started to use was no external/electronic crossover but using the ML input that fortunatelly is cap coupled design and just change that input cap by a teflon smaller value one and a resistor to change the operational amps frequency range and that's it. Yes, the main ADS speakers still use a heavy modified passive crossover.

I think that everything in audio has its own trade-offs and it's precisely in our " kowledge/skills " levels to choose the " adequated " trade-offs what puts the system/room quality performance nearer or away from the recording and from live MUSIC.

When I started to growing up faster in my quest was when I decided to forget " what I like it " to make my evaluations and focused/focus on what " should be ". Latter on I took in count that is non-important any more " what we like it " but how a system/room SHOULD sounds when taking MUSIC as a reference and any one can be sure that if we make system/room changes thinking on that " should " target always we will like it as ever before.

R.
Dear @lewm : """  I would favor whatever sounds closest to live music ... """

" finally " we are in the same " channel ".

Yes I have a lot of respect for SK and his products that I like it. The exact SS device ( electrically. ) for a LOMC cartridge is a bipolar one not FETS, FETS are better for MM cartridges.  D garretson posted several year in Agon when I posted about.

Now, bipolars in amp output stages performs better than MOSFETS, are less colored. Everything has its own colorations, nothing is perfect and certainly not even bipolars. If we want to be nearer to live music then we have to have the lower colorations we can at each system link in that very complex system/room chain.

Levinson, Krell, Threshold, Classé and many other vintage amps were designed using bipolars.
Some of those designers as N.Pass changed the bipolars for MOSFETS and the main reason was that FETS are a little near to the tube signature, faraway but closer than bipolars.
In the low level amplification as phono stage the main reason almost no one use bipolars is that are a " pain in the ass " to use it. First problem is to choose matched pairs and its polarization. The MATs you use in your preamp input/first stage is a very good device that I told you is used in the low level signal in my ML monoblocks by design.

Other than my MLs one of the best bipolar designs I listened was the Threshold 550e ( better than the today Pass ones. It's a class AB design and I remember that I listened " face to face " against the top Threshold pure class A and the 550e outperformed. NP is a very good amp designer as was or is ( ? ) D.Reich from Classé. ) and the Classe DR3 VHC.

Now, it's not easy to take in count what I'm telling here because to be aware off not only we need to make comparisons in between but to be " sure " we need that our system performs not only with very high resolution but with a very low low colorations.
I know you are in that " never endless " path. Good.

Btw, sooner or latter you have to by-pass/disappears all your system fuses ( for this you have to have a precise and very well regulated electrical source and additional with at least 80db-100db noise reduction and surge  ( bullet proof )  protectors. ) and re-wire all internally and externally and this means that the power cords must be manufactured with pure silver. The system improvements are not only outstanding but so incredible that we just can't imagine it till we experience it. That is a real NEW audio world experience !

Regards and enjoy the MUSIC not DISTORTIONS,
R.
Dear @audiofun : I don’t said was not SS design but that the Ifi people are the " Carver " designers on that models. I said it’s a tricky design and any one can read what they explain about it’s trade mark: " Tube state ". Here is where appears the " Carver " signature. I hope you remember the Carver’s " anecdote.

I know that every single electronics tube system foundation owner are really proud on those tubes and sincerely I don't see why in 2017 any one that knows exactly how the live MUSIC in a near-field fashion sounds can be proud to own tubes. Makes no sense not only to be proud but still use that heavy limited technology that can't today honor MUSIC.

About the triamp or even forth one set up it’s not that " did not works for me ". I learned that even if we have a non bi-tri amp set up but using monoblok amplifiers it’s a must that both be matched in precise way on some operation main characteristics as: gain/sensitivity, damping factor, frequency response, distortion levels, slew rate, bias level, etc, etc. and I mean truly matched where one channel is a " mirror " of the other.

When we are using 3-4 different amplifiers each one has its own " signature " even if matched about what’s a " pain in the ass ".

I’m in favor of active speaker designs as ATC but but but .... and if if if ..these buts and ifs are a real trouble if we want to be nearer to the recording.

As lewm I don’t like to mnipulate the audio signal to even the " signature " because as he said it developed " colorations " that at the end are only additional distortion levels.

I think that due to your specific knowledge levels on that regards you can understand my take here it does not matters if you disagree. Could be controversial? maybe but I try very hard for years about even with four same ML 20.6, so I don’t have your specific knowledge level and maybe not your skill levels but I have in deep experiences on it.

Anyway , you are satisfied with and this is the important issue. I remember that I was satisfied with for years till...............


Regards and enjoy the MUSIC not DISTORTIONS,
R.




Dear @lewm : " I really do not like and have not liked "stuff" that was invented and sold solely to make the sound of a solid state device sound more "like tubes" """"

well the Iphono is what has in its design: tubestate. That’s why I posted is a " tricky " design. It’s not a true SS design and certainly not a full bipolar one. No single Ifi product is.
It's unfortutaed that many electronic SS designers try to do that choosing JFET/FETS/MOSFETS , instead bipolars, because are " nearer to the tube signature " ? ? ? ? 

That’s like what you name when talking on your full preamp when said: " I use tube... ", no you did not there. The main critical first stage is SS ( not bipolars but still SS. )

There is no way that tubes can compete with a good SS design if what we want is to be truer to the recording. NOt even the PH77 and certainly not in a system where the speakers are driven by 3 different amplifier designs and I know this last issue because I did it in my system with SS, tube and hybrid configurations. No way my frriend.

Lewm remember that I always talk not on what I like but what can stay nearer to the recording or live event.

Regards and enjoy the MUSIC not DISTORTIONS,
R.

@enginedr1960: you own one of the best SUTs ever and second to none. Good !.
Dear @enginedr1960: Btw, the Jeweltone I'm talking is ( if I remember. ) the RIIID model. 

""" What I am about to say may offend many . It sounds like a great digital front end .     """

Well, at least does not offend me only makes that I will looking for a sample. A " great digital front end " is the nearest home audio system that can really honor MUSIC, analog can't do it even that I'm an analog believer but more than this I'm a MUSIC lover and digital is at the top and second to noneincluding R2R.

Regards and enjoy the MUSIC not DISTORTIONS,
R.
Dear @enginedr1960: Lucky you are,that extremely low output cartridge is really a Jewel/gem. I never can't put my hands on because was so expensive for me.

Could be one of the 3 best cartridges ever made. Obviously that I said it through what other people talk in the old times and what J.Carr posted somewhere in this forum in the past.

Good that finally you will try that " tricky " SS phono stage.

Regards and enjoy the MUSIC not DISTORTIONS,
R.