I previously had the Apex (with Galileo MPC) and Precision Reference i/c's.
Now am running in a Copper-Tungsten-Silver from my CD player and Tungsten from pre to power.
I have noticed a clear step up in the holographic staging where everything has it's own place and it just makes it so clear as to what is playing from where, without overlap of instruments/vocals.
Additionally, the bass impact and dynamics are very good indeed - along with the fine details coming through, that really allows me to follow along with what's going on in the mix.
There is a difference in the treble presentation - but I am not yet sure if it's too much of a good thing. To be fair, this has tamed somewhat during running in and I only have 100 odd hours done so far and despite the website saying that 100 hours is enough, Ted informs me that 200-300 is ideal, so I am withholding judgement just yet. I am running them 'passively' rather than using the MPC's due to Moon telling me that I should not use the active shielding with my P8/W8 amps.
They do appear a bit less musically involving and lacking in a touch of warmth [via the grey tuning bullets] but this is still improving, so I hope they will come good in that respect. It's just a slightly more "matter-of-fact" presentation thus far.
They are SO good in many ways, I will be happy if the touch of warmth and musicality comes on song in the remainder of run-in time, so fingers crossed there!!
Nig