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 30 responses by audiofun

Chakster:

You ask if it can handle a .05mv cart. The website clearly states the iPhono 2 can provide up to 72db which is a factor of 3,981.07. This comes to an output voltage of 199.05mv. So, 2/10's of a volt output. I'd consider that low and opt for 78db of gain for a cartridge that low.

I assume you are asking about a .05mv cart because that is what you use. If this is the case, I would suggest the iPhono 2 won't fit the bill for you so you needn't worry about the "strange" failures you continue to mention in this thread. Find a phono stage that does at least 78db and you should be set. 
They have sold literally thousands of these things, I've owned one since the 1st gen and I've not had a problem. I am not saying a problems can't exist. I am just going to come out and say it. You seem suspect. You come on this thread to talk about alleged issues others mention on a different site while trying to push 3 other phono stages and claiming that AMR/iFi misrepresented something concerning EQ. What's your game? 

How bad bad is it? What percentage in the field are failing? How are you getting this information? You mention all the sound killing switches in the iPhono, etc.  You see how the more you write the more it appears you have an axe to grind with iFi?


I started this thread to share my experiences with a superlative phono stage that has upstaged units costing near $10k because it is nice to be able to get that type of performance on the cheap. If you want to discuss a handful of issues some may unfortunaelty have encountered, why don't you start your own thread.  
Also, if you have all these other phono stages/SUT's/ head amps than can handle your MC 2000 and you clearly don't like the iPhono, why again, I ask  are you on this site asking if it can handle that cartridge? Everything about your delivery reads as disingenuous. 
I'm going to correct myself. At 72dB with a 200mv output the iPhono 2 should be able to handle a .05mv cart. I sometimes revert back to my old passive pre (MFA Reference) days and forget I'm running an active gain stage these days. That is plenty of oomph, so for those who TRULY have an interest in this phono stage, I would say that a cart of .05mv shouldn't be an issue. I thought about this last night as I was spinning records with my iPhono 2 doing to duty and listening to digital. Even in a passive system, if one has a more sensitive amps like my Graafs, (2) GM200's or my Modena it should drive them. I think my initial answer was a bit hasty as I was a bit  agrivated by senseless posts. 
So back to the topic lf my thread, how many have actually used a linear power supply with your iPhono 2 and what are your thoughts? I was listening to an album I recently purchased "Hans Zimmerman Live in Prague", it was spectacular!

I've considered trying other linear supplies but the Pyramid has been outstanding. My O' Scope just came back from the shop this weekend so I may experiment with my own linear regulated supply which I designed a few years back. 
James1969:

Absolutely, the iPower is a very good supply especially for a SMPS, but it does not compete with the 20 something pound linear regulated pyramid supply which uses an EI transformer. Due to the air gap in their design, EI tranformers are inherently better at blocking noise than toroidal but they also radiate more magnetic flux so move it away from your phono stage (I have 3 of the pyramids and I have never found them to be offenders from a magnetic coupling standpoint, probably due to their heavy steel case construction).

 The Sound will be more relaxed and fleshed out while offering a deeper soundstage and overall a more engaging listening session.  Long story short, it makes it sound much much more costly than it is. I know cost does not mean everything but it can buy you great sound if you know what you're doing. The best I can say is it sounds like you have just the correct amount of tube magic added to your system with no slowness, or syrupy colorations, just the best parts of what tubes do.

Without the LPS, I don't think it would fare as well as it did with the B-Lab. The B-Lab was $10k until relatively recent, the dropping Euro has brought that retail cost down somewhat. The B-Lab is an awesome phono stage and I was considering purchasing it (had it on extended audition). The iPhono 2 was so good and competitive I just could not make a sound case for it. I won't lie, I loved the look and feel of the B-Lab and really wanted it to better the IPhono LOL. It was not to be and my bank account is the better for it. I am not taking anything away from the B-Lab, it is still one of the best phono stages I've heard.
I will check out Interstellar. I also have "Hans Zimmer - The Classics" and some of the theme music from Interstellar is on this album. 

You're in for a surprise, shock when and if you add a LPS.
rauliruegas:

Let me chime in here and speak on my own behalf. I am probably going to regret this.

rauliruegas you wrote:
"That’s why I posted is a " tricky " design. It’s not a true SS design and certainly not a full bipolar one."

The iPhono is solid state end of story. There is not a valve device to be found in it. The iPhono does NOT differentiate from the RIAA curve (provided of the 6 available that is the one you have selected) so I don’t understand your posting of " they manipulated the signal to achieve a " signature ". They did not let it " goes " the design with out " touched " with out changed.".

If you are conflating the use of differing SS devices such as mosfet’s combined with bipolars or Jfets with "manipulating a signal" while still maintaining the RIAA curve I would humbly suggest you are in error.

Based on your argument, any and all devices, that are arranged in such a way as to present a certain set of characteristics, say the CCIR curve, would portend manipulation of that curve if they did not use one specific type of device throughout the circuit. Lets say that someone built a CCIR EQ circuit using all octals and then another person built a circuit with the exact same transfer function but using octals and 9 pin miniatures and lets throw in a jfet for the fun of it. If that EQ curve measures the same, they did NOT manipulate that signal. The Strain Gauge system (the older version more so than his latest efforts) could be said to manipulate the RIAA curve because if I am not mistaken is does not adhere to the RIAA curve (and I am NOT picking on that system, just highlighting a fact for demonstration purposes).

As an example my AMR PH 77 has a unique in-house designed curve for DMM records. That IS a manipulation of the RIAA curve. I believe your terminology is incorrect. If you are writing about signatures, then sure. Most manufacturers go for a certain signature, hence a "house-sound".

Unless you can produce a frequency plot or a circuit diagram that details a gross deviation from the RIAA specification within the iPhono 2 your words are at best reckless.

Now if someone doesn’t like the unit, so what. I don’t like most gear that the reviewers and many people rave about especially when it comes to dacs and phono stages.

I was shopping recently for my 4th phono stage and I compared the Pass Labs XP25, Sim Audio 810P, SPL Phonos and a few others in the same system. Based on magazine reviews and various sites and the psycho babble nuts who show up from time to time to tell us we only hear what we want to hear and that the most expensive units influence us, I should have chosen the Pass. I love Pass gear and at one time had the AWESOME Aleph 1.2 amps which by the way I should have kept, I still regret not hanging on to that amplifier, sigh. Ok, back to the point, the XP 25 was probably the one I liked least of all. I found it thin, sterile and detached from the music but it was airy. The best by FAR was the SPL Phonos and I bought it. Is it better than my iPhono 2 on a linear supply? Yes it is. It is the first phono stage other than my PH 77 that I have preferred to the iPhono 2 but it is noisier than the iPhono 2. The noise is not an issue unless you really have to go high into gain or volume which in my case I do not. The Sim was about $9K, Pass was $10.6K and the SPL is $2.5K. The point is that the iPhono 2 is a serious piece of gear and while it has vanquished many very expensive phono stages, I did find one (albeit 5 times the cost) that I prefer.

All of the above because you (Raul) wrote in another post "There is no way that tubes can compete with a good SS design if what we want is to be truer to the recording. ". I can tell you as the owner of a fully sorted R2R deck with R2R Safety Master of Jacintha "Here’’s to Ben" and "Jacintha is her Name" and the 45’s of both albums including the newly released 1 Plate Master limited edition of "Jacintha’s Here’s to Ben" my SP10 MK3 Kuzma/Anna/PH77 sounds closer to the R2R than any other phono stage I have heard. This tube vs SS nonsense needs to stop.
I have said for years the better my gear gets i.e. the better the individual pieces are the more they sound alike REGARDLESS of the underlying topology. This should make sense to anyone who understands what we are going after.

My Graaf Modena OTL sounds very very much like my Acoustic Reality Thaumaturges. If you a listen to live unamplified music or visit the Opera, etc. and your goal is an attempt at the recreation of that live sound AND if you go after gear that REALLY sounds truer to life and not what some on-the-take reviewer says is the best this month you should notice that more and more of your gear sounds very very similar regardless of its design.

If, I sounded preachy that was not my intent and apologize. Just busy and wanted to get that all out there while I had a few moments to pull away from the computer :) It is after all about listening to great music on great systems.
rauliruegas:

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

you listed the very link (a few messages back in this thread) to one of your previous posts: https://forum.audiogon.com/discussions/review-iphono-2/post?postid=1415693#1415693

where you wrote:
"It’s not a true SS design and certainly not a full bipolar one. No single Ifi product is."

TubeState is a trademarked name designed to indicate a unique cricuit. Again, going after a signature sound is not what you described. You wrote: " They did not let it " goes " the design with out " touched " with out changed." I responded by mentioning that the RIAA curve was not touched.

Please please show me a circuit ANY circuit SS or tubed or hybrid where the electrons go through it "untouched". I want to see that circuit. What circuit are you using for your litmus test that has absolutely NO signature in order to compare and determine that the iFi is in your words "manipulating" the signal. This circuit adds no EQ’ing other than the RIAA curve (or one of the other 5 curves).

You are conflating a marketing term to denote a circuit which a designer identified as sounding "musical, or pleasant" with manipulaton akin to noise shaping in some dacs.

When Krell produced the Cast Transmission system which some thought sounded better than voltage amplification, did they manipulate the signal. No, same levels, no added EQ’ing but current amplification can sound differecnt than voltage amplification in the same way that components can measure the same and sound completely different.

dougolsen:

The unit  does run hot. It'll be fine, heat is a necessary evil of class A. I leave mine on 24/7 and I've been doing so for over a year, no issues at all :)

The fuse is of the larger variety 6x32mm.

and yes, I think I already regret it 😏
dougolsen and glennewdick:

its going to to keep getting better up to about 700hrs but that is actually with a signal run through it. Simply being plugged into the socket wil help to some degree. I bought an inexspensiv FM tuner on this site specifically to break devices in and especially phonostages as it can take a long time just playing records, especially if you listen to multiple sources as I do.

Make ups some dummy loads with about 33k ohms and get yourself an  attenuated reverse RIAA cable or box. Hagermann makes a burn in box phono stages, another option is a CD specifically enigineered to break in phonostages.
Kalali:

it will sound good out of the box, better at 100 hours. I gave you the amount of time where I noticed no more gains. I would listen to the unit but during working hours, I would burn it in or during times I was away from home. I break a lot of things in using that method.

This is just my observations in my system.
clearthink:

Do yourself a favor and ignore certain noise that is on this thread. This "noise" seems to have an agenda against iFi and infects this thread I created to share my experiences with an exceptional device at a down to earth price.

I think it is "shill" side-band noise :)

kalali:

No problem at all. I actually make many many recordings of devices at 24/96 when I am comparing items especially when it comes to cartridges on my turntables where the down time would be far too long to make a serious judgement/decision.
Raul:
Man your going to burst a blood vessel. 
Wrong again, the PH77 was $12k and with my Bendix and MU 6900 tubes more like $14k. I'm going to listen to my shame of a phono stage :) get some help

dougolsen:

i have not not seen that behavior. I'd take them up on the offer if you see this behavior again. 
dougolsen:

just a thought. I've never made configurtion changes with the unit powered up. Not saying you did, but if you did I don't know how the stage would behave. 
dougolsen:

When you get your unit back and all is good, you may eventually want to try a Sbooster BOTW P&P ECO for a nice increase in performance. I aslo have the Sbooster Ultra attachment which connects to the split-current module. I have found the ultra attachment (an additional in-line noise filter) to cause the sound to become dulled or too polite. I actually don't use my ultra attachment. I would suggest changing the fuse inside the Sbooster to something a little better than the glass fuse it ships with. I have an AMR Mk2 fuse. 
dougolsen:

It is a 6A fuse, sorry about the delay getting back to you, slammed busy.
dougolsen:

You are on the right track. Cut off the cable from the old supply (I know I don't have to say this but better safe than sorry) with the wall-wart unplugged. You a DMM (digital multimeter) or a continuity test with probesl to determine which wire of the barrel connector is hot. The outer barrel will be your return (ground) and the center of the barrel connector (stick the probe into the opening of the barrel connector) is your hot. The hot will go to the red binding post of the power supply.
Raul:

Please understand that unless you are writing for the benefit of others or just to hear your fingers clack the kbd, you should stop addressing anything to my attention. I promise as God lives I did not read your last post. I just saw your name and wrote this in response. I am not interested in anything you have to write and therefore will not read any of your rantings.

I am in this for the fun and enjoyment of my system, not to read the ravings of someone I don’t know. I could not care less about your thoughts as they relate to audio or anything else.

Sorry if my message is curt but I wanted to be clear and concise.
dougolsen:

No problem. The modicum of brightness that I attribute to the iPhono 2 is due solely and entirely to the SMPS. Anyone who has read my posts knows I am not a fan of SMPS's as I have never heard a SMPS perform at the level of a competently designed LPS. 

My my system is resolving and sensitive enough that I can hear the deleterious effects of a SMPS simply by plugging one in near the vicinity of my rig.

Glad to hear the unit is performing and sound good, it will continue to get better as it burns in.
Racedoc:

Hi, you are welcome.

I have no experience with the Tidal gear, but it is beautiful and I would hope that it betters many phono stages based on the pricing differential alone. Obviously I have no opinion as I have not had the pleasure of hearing the Tidal gear, perhaps one day :)

I have heard the DS and we definitely differ. The DS was probably the single worse phono stage I have ever heard. I found it to be very phasey with respect to surface noise artifacts. The surface noise was separate and distinctly out of phase from the rest of the music. The surface noise was always left of center and out front, it was really weird. The sound was thin and anemic, just plain bad. I have suspected and I hope that the unit was faulty because I am not exaggerating, it was terrible. I really have to believe that unit was not operating correctly, especially in light of your listening impressions.

I have not heard the Trichord, sounds interesting.

Thanks for your insights, they are appreciated.
Mantis-toboggan:

I’m just seeing this as I grew tired of some of the foolishness. I appreciate your words, thank you. My whole goal was just to share my experience with a superior and affordable phono stage.

I appreciated the intelligence of how you and racedoc presented your impressions regardless of whether or not I agree with those impressions.  At the end of the day we all have our likes and dislikes.

You have probably cost me money :) because now I have to buy some of the SR Black fuses and compare them to the AMR mk2 fuses. If the SR Blacks are better, in they go :)

I’m really glad you are enjoying your unit and more importantly, your music!
pbraverman:

Read your trial, sorry you had to go through that. It's never fun when these sorts of things drag out. I thought you handled it well and I especially liked your balanced and intelligent response to one of the less enlightened posters to your thread.