The model(s) you are looking for are the Tokyo Hy-Power HL-100BDX (10W in for 100W out) and the HL-200BDX (10W in for 200W out). Both are small, solid state amps. Build quality is excellent. I've heard nothing but excellent reports about them. I have the older HL-100B and HL-750 amps and also owned the HL-50B. All are excellent.
Info can be found at: http://www.thp.co.jp/thp%20hp%20Eng/amateur_eng/hf_eng.htm
In addition there is a mailing list on Yahoo! Groups for Tokyo Hy-Power with somewhere around 115 members. See http://groups.yahoo.com/group/tokyohypower
Also, note the spelling of the company name. It's Hy- not Hi.