Having said that...
[COLOR=000000]My idea for the iTube PRO:[/COLOR]
The more I keep thinking about it, the more I imagine a bit more of what I know about the iFi vision, i.e.: an affordable (or relatively "affordable") product that spars, and beats the feathers out of similarly advertised products above its weight class, while at the same time offering the bells and whistles not found among the common fare.
Enter the Stereo 50 All-In-One Vacuum Tube Amplifier by iFi:
If I'm not mistaken, one of the things that seems apparent with iFi is that they have many irons in the fire, some of which are concurrent designs, pushing the boundaries a bit, while testing the waters with their customer base to see just how far they can take their product without breaking the bank and/or releasing an unmarketable product.
A very interesting bit of wing-spreading for iFi has been to release the
Stereo 50, which I believe will hit the US in February or March 2015.
This is that bit of kit that contains the iDSD micro, the iCAN, and the iPhono in one box, but all a bit modified, adding bass and treble tone control knobs, as well as a tube stage which counts in at 6 tubes! If that weren't enough, the package comes with two speakers, housed in very sound, and endearing, bamboo casings, which adds up to a homage to vintage gear. Coming in at $2000 USD for the complete
Stereo 50 package, this is designed for the computer audiophile who has an eye (and ear) for vinyl, as well. Just add your turntable, and you've got what appears to be a class act phono stage, totally surpassing their previous efforts in the iPhono, as well as the iTube.
See Below:

Note the tube stage: 2x ECF82s + 4xEL84X
Concurrent Design...?
In my opinion, one could hope! When I tell people about the iTube mico I ask them to search for a tube buffer stage out there which doesn't cost them an arm and a leg. Let's face it, many tube buffers are often pricier that full blown tube driven headphone amps! With the iTube micro, however, for a mere $299 you're getting not only a solid product, but also one that's as advertised: "musical rightness." You're not getting this huge tubey sound, or over the top coloration; because, let's face it, as iFi caters to all audiophiles, whether we're headphone enthusiasts or speaker jockeys, the key has always been a balanced sound, even though tons of digital music could benefit from more tube warmth. In the case of the
Stereo 50, most vinyl devotees agree, tubes = vinyl = warmth in the winter. I mean, try listening to a digital copy of The Beach Boys "Pet Sounds" in mono, on a solid state system using your HD800s. It sucks!
Enter the iTube PRO?
What the World Needs Now...
I'm not a designer nor an electrician, nor do I know much about circuits, and capacitors, and all that stuff which feeds our ear holes. But! I
do know that people like choices, and that's what iFi excels in!
As I mentioned in passing (a couple of posts above), I believe what we need now is a choice in tubes. Construct an all balanced box (hypothetically called the iTube PRO), where there are an array of tubes (see the abovementioned
Stereo 50), but this box allows us to configure our own tube settings to taste. I don't believe anything out there exists like that, where you can toggle switches which will run your gear from pure solid state, to one tube for two channels, then one tube for each channel (two tubes), all the way up to a 6 tube array, for the most tubey of tube sounds. You have your simple "musical rightness" all the way to making your Buddy Holly files sound like he's in your parlor.
Again, I must stress that I know very little about electrical design and how to contruct a box like this; nevertheless, I have in my possession a Mesa Boogie Mark V amplifier, running at about $2300 USD - a guitar amp - which houses many tubes, all of which are configurable, by different channels, different toggles. In fact, in one channel, alone, you've got three different tube configurations, three different EQs, and a "bright" and "normal" switch, along with your standard bass, treble, mids, knobs, with selectable wattage.
This amp has three channels of the same wide functionality!
Now, how much would you pay just for one of those channels, out of the $2300? How about a much simplified version of that. No knobs, no EQ, no "bright" or "Normal" switches, and no watt selection. Instead, the basic premise is now translated into a tube array, only, where even the loftiest of tube amp/buffer manufacturers are losing their kilts over a tube buffer that offers any user, no matter how much or how little they want their tube warmth, to chose their listening pleasure thusly.
I don't know; maybe it's just a pipe dream. The thought of such a product, though, send the proverbial chills into my tender moments.
What would you pay? $1000 USD? $1500 USD? Less? More?
We know the iDSD PRO will come in at $1500 USD, which is a fairly stiff price considering previous iFi gear. The ability to go all balanced is one thing, the 4 Burr-Brown DAC chips is another (TBD), while the integrated headphone amp promises to be...? Probably excellent! However, if it's $1500 worth of "excellent," why the need for an iCAN PRO?
I'm just playing devil's advocate here, really, concerning the iDSD PRO. I have no idea how swell this unit will be. What I do know is that as good as the iCAN micro is (and it
is damn good!) many people, including myself, have opted for external amps. Different strokes, right?
Personally, I'm thrilled with what iFi has given us so far. I can't wait for the future either!
How about something that doesn't exist? The iTube PRO.
* 1st toggle for tubes on and tubes off (that's a pass through for solid state, and by flipping the switch you are now in tube mode).
* 2nd toggle one tube, both channels (your basic iTube micro sound), then flip the toggle up and you've now got two tubes running, one for each channel.
* 3rd toggle, three positions, a.) off, b.) 3rd tube both channels, c.) fourth tube both channels.
*4th toggle, three positions, a.) off, b.) 5th tube both channels c.) 6th tube both channels
1st Button - Digital Antidote Plus on/off
2nd Button - 3D for speakers on/off
Balanced XLR ins/outs
Unbalanced RCA ins/outs
As you can see, we're looking he ability to start off with the first toggle, and then flip on and off any other tubes you wish (always allowing them all to first warm up properly before listening). One could have simply the 2nd toggle switched to dual tubes, for each channel, and then bypass the 3rd, 4th and 5th tubes, and go directly to the 6th tube, or any combination, thereof. How about not even touching the 2nd toggle, and only flipping the switch for the 4th tube, which feeds both channels? You can do that, too! 3rd and 5th only? Okay! 4th and 6th only? Yes! All on at once? Vinyl vultures, this is your dream (and quite a few headphone listeners, too). Competition? You've sunk my battleship, yo!
Hmmmm...how much money are we looking at again?
4th quarter of 2015. Make it happen.

I'll be glad to test drive it. :atsmile: