With what are you driving the Mikros 90?
Between the hybrid Bada PH-12 (w/1x GE 6SN7GTA & 2x Tung-Sol 6SN7GTB), the SS KMF Audio(run out of the EVS-modded Oppo DV and even the headphone out from the Linn Intek, what I am getting from the Mikros 90 partnered with the FiiO RC MH1 is FAR from dry.
Sounds like the Pipeline ET-4 should be to your liking, then.
In absolute terms, I think the ET-4 betters the MH1 in extension, clarity and speed--and maybe absolute resolution.
^ Welp if you must know.... for portable i use this set up.
... venturecraft amp with my 4th gen ipod nano and 5th gen ipod classic.
The 4th gen nano is more of the clean, tighter, more crisp sounding with a smaller soundstage while my 5th gen ipod classic has bigger staging, more 3D, but is softer more spacious sounding. The Logans sound best with my crappy beatup nano cuz the overall presentation has more focus, sounds more dynamic and snappier and is more engaging despite it is "leaner/thinner" in the bass department.
My desktop setup is all over the place. Have a Audinst MX1 amp/dac config ( my most neutral/ balanced rig), the FiiO E17 amp/dac hooked into my Sansa Clip + (kinda on the warm side but is powerful, not the most neutral/ transparent cuz even the venturecraft amp sounds better to me via my ipods), my cheapo ELE DAC (which is on the bright side with good overall balance but nothing to write home about), and my new Schiit Vali (so far it seems pretty uncolored for the most part for a tube amp, only slight hit of warmth and is pretty transparent).
The Logans sound best straight off of the MX1s without any additional amping, cuz tried it hooked up to the Vali last night and was alright sounding, but when the Vali is hooked to the FiiO E17 like i posted last night, makes these Logans sounds crazy musical with much better fullness/ weight than the FiiO MHC cable, but the bass despite increased in quantity quite a bit still sounds a bit boxy/dry to me. It just didn't have that lushness/ texture i got from my ATH WS99s BUT it is getting much closer so................ haven't tried it with the ELE DAC yet so.......
i still like the Logans best stock everything via my venturecraft amp/ nano config cuz it is just so clean, tight, snappy and engaging. DAT LOGAN MAGIC!!!
/setup rant