I am also looking at amps (and somewhat, DACs as I find it hard to tell how good my current one is) in this price region.
My key criteria is very good performance at low volume (i.e. *no* channel imbalance, nice prat and good dynamics) which I assume would be helped by adjustable gain. The cheapest option would obviously be to simply lower gain on my NG98 so that I can actually use it as amp
I don't think I care to deal with tube hunting etc so I will go solid state. My current favorites are
* KICAS (could not yet figure out how much it would cost shipped to Switzerland, assuming something like 400USD, could not yet figure out what PSU it needs)
* Matrix M-Stage (shipped 270USD) very good review from project86 plus I can switch gain roll opamps and Jeffrey is very good to deal with
* Audio GD C2C (something like 340USD shipped)
Edit: Also add Sheer Audio HA-006 (Dynalo build) for approx 300USD
And then there's the E9 who nobody knows when it will come or how good it will be but potentially a game changer in the sub 200USD bracket.
DAC/Amps
* Audio GD FUN (thoroughly confusing me, plus I already have an USB DAC Amp limited to 48khz)
* Matrix Mini-I, I don't like the soldered opamp and it currently is also limited to 48khz on USB - would probably wait for the MKII said to allow 96khz later this year.
This will be using to drive a D2000 with J$ Pads (whenever the package gets here, soon hopefully) and perhaps a HD600 or HD650 down the line.