Actually Dynaudio and Dynaco are different companies. Dynaco gear was sold under both the Dynaco and Dynakit names. Most of their gear was sold in both kit and pre built form. Since they came as kits (same with Eico) you should be able to dig up a manual which will have step by step instructions to put the thing together (along with all the necessary precautionary warnings). I forgot about Fisher, they also had several models that still get very favorable reviews over at the vintage asylum
Some specific Dynaco amps to look for:
Stereo 70 -- 35 WPC EL34 based stereo amp
Mark IV -- 40 WPC EL34 based mono block
Mark III -- 60? WPC KT88/6550 based mono block
Mark II -- 50? WPC EL34 based mono block
Stereo 35 -- 17.5 WPC EL84 based stereo amp
Dynaco Pre:
PAS2 or PAS 3 -- the PAS2 and PAS3 were the same internals with a different face plate, the 2x and 3x variations had special trebble and bass pots that took themselves out of the circuit when put at the 12 o'clock position. This is a 4x 12AX7 (Dynaco used telefunken tubes, run at 11V so they're almost always good as new, and worth some dough)
Eico:
HF-87 -- 4xEL34 stereo amp, comparable design to the dynaco, supposedly good iron was used, haven't heard one though
HF-85 -- 5x12AX7 stereo preamp -- very nice sounding
HF-81 -- EL84 with 12AX7 based integrated amp -- gets favorable reviews
Lemmie know if you do end up picking something up, I should be able to point you in the right direction for some info. Also, if you do pick something up, don't just plug it in and flip it on (as tempting as it may be). You should bring it up slowly (or replace some key capacitors straight away) to avoid frying tubes or trannies, old caps don't always behave correctly once they have dried out and or leaked. One other thing to note, older tube amps don't have load resisitors in there, so they cannot be run without speakers (or some other X ohm load) attached without potentially damaging the amp.