iFi Audio micro iTube2

Add the sweet sound of tubes to any system, and / or have a one input line-stage preamp with  iFi Audio's amazing micro iTube2!  Not only does this unit sound absolutely spectacular, it is an incredibly versatile Tube Buffer and single analog input Line Stage Preamp all rolled into one.  I have been driving a pair of Clones Audio PM25 mono blocks and a pair of Gallo Acoustics Strada's with the micro iTube2, with simply sublime results.  I am upgrading to a full function preamp / DAC in this system, but will miss the beautiful sounds, the simplicity, and the form factor friendly size of this little work of audio art.  It's a perfect fit for any desktop hi-fi system!
Bass boost, 3D effect, and tube signature settings all work to perfection to custom tailor your sound!  Very helpful to use different settings with various recordings, speaker choices, or in different system settings.   

Only 5 months in use!  All original factory packaging, documentation, and accessories are included. Original owner who has babied this beauty in a smoke free environment. It is in pristine condition.     

Many excellent reviews on the web to Google for the iFi Audio micro iTube2 
Here is some information and marketing spin from iFi's website:
Love music on your stereo but crave something to kick some life into your tunes? It doesn’t matter if you’re listening to vinyl, CD or a digital stream…
The micro iTube2 adds depth, bass and tons of personality to your playlist.
The sound you want, all of the time.  The micro iTube2 is a tubed output stage, preamp, buffer and impedance matching device rolled into one.
In other words, it replaces flat sounding recordings with studio-quality sound.  This is high-end audio as it was meant to be heard.
Music is power.  The micro iTube2 separates and emphasises each vocal and instrument. It adds warmth, removes harshness and kicks your speakers into action.
More spec for your tech.  But there’s more…the micro iTube2 is loaded with the latest technology, including:

• XBass+ To clean up and restore a rich, deeper bass line
• 3D+ To recreate live stage atmosphere, and
• Whatever your music system, your favorite bands just started sounding even better!

The micro iTUBE2 rocks… Why?
Because you can listen in three key sonic signatures:

• Single-Ended Triode
• Push-Pull Tube
• Classic Tube

Want to know which sounds best?  Try it yourself. You’ll figure out the one that’s right for you.
Choose the 'magic' of SET, Push-Pull or Classic Tube sound - three different sonic signatures. There is no right or wrong, it's whatever you prefer!
Only the best tube for our products. The GE5670 made by General Electric. Nothing comes close for quality.
Our 3D+ Holographic® dual-analogue matrices create a more immersive, deeper soundstage that puts the artist with you in the room, not just in your headphones.
XBass+® analogue bass correction system corrects headphone/speaker bass response to deliver a deep, tight and prodigious bass.
DirectDrive® means no output coupling capacitors – this direct signal path is without peer and is the reason why the sound is so ‘true’. The sonic transparency is second to none and is there for all to hear.
Amazon.com Review:  
Must Have!
Will enhance your sound stage experience on any gear. you will be amazed! Give 2 weeks break in period before any critical listening and playing with settings. Instruments had their own space, rock solid images. Get up and walk around them. Of course for that effect your gear probably needs good synergy!