Recommendations please for good, affordable pre-amp for system?


Hi All, 

I'm configuring my first system, and have so far acquired the speakers (Thiel 3.6) and amp (Bryston 4B SST). I believe I need a preamp to complete this (and I believe only a preamp, right?). And I'm hoping you can give me some leads, information, and recommendations.  It's a 2-channel setup, and while it would be nice to add some HT capability in the future, I'm seeking as pure a sound as possible.

Some things I've looked at are Theta Casablanca, Bryston 0.5B, and perhaps for future upgrades, model Rotel RSP-1582 and Marantz AVR8802 -- although I'm concerned that those latter two, while brining nice features, will work to molest the signal.

Prime listening will be CD, with some lossless Network-attached storage, and Airplay with Tidal or otherwise Internet radio.

Thanks for your recommendations!
donzi
Sorry. Newbie in all of this. I actually don't know. Budget is perhaps $500 on down for real quality, and I would like a lot cheaper than that. And yes, on a search, I found some for $18k, which is what sent me here. 

My amp is solid state, so I would presume the preamp should be as well, right? I've been recommended to seek something with "HT passthrough/ HT bypass", as I ultimately might like to hook up an HT system (while still keeping the quality of sound on the fronts for CD, and Network Storage, etc. Can you combine tubes and SS? Remote is not so important on this unit as it will be, ultimately on the future HT. Those features would be nice, to turn on home sound from app and the like. But meanwhile, I'll plan to get up and push buttons. Though perhaps, on that day, if this has some sort of power on that can be controlled by another unit, that would be bonus. Thanks!
Sorry, I am not very familiar with either of these pre's. However both companies are highly respectable. 
Perhaps another member that has some experience with either of these products will chime in.
Good luck on your journey.
Would you like to try passive pre amplifier.
They are available on Ebay, tube and SS version.
The guy is from Poland and he is using high quality parts
3 inputs and 2 outputs. Totally neutral,
-------------------------------------------------------------------------------------------
Number of steps: 48
Contact material: Hard gold
Polished wiper and contact pins
Extremely short signal path
Channel matching: +/-0.1 dB
Resistance: 10, 20, 50 or 100 kOhm (other values on request)
Resistors: INPUT - Caddock MK132; GND - military Vishay/Dale RN55 1% 100ppm , 1/10W, low noise, non-inductive, metal film

Upgrade options:
Remote control - $200
Vishay Zfoil series resistor - $60
Takman REX shunt resistors - $70



Topten, what is the difference between active and passive? And can tube be used with a SS amp? What would be the info, or link for this one?