First amp was a Total Airhead (the old 3AAA version), for $200. I really regret that purchase because my portable players actually sounded better *without* it. Couldn't even use it with standalone sources because of the clipping and distortion problems.
First amp I was really thrilled with was a Gilmore V2. My current RKV Mk II is the second and latest amp to thrill me
I've also owned a Little, Perreax SXH-1, and a Gilmore v2-se.
My first amp was a Grado RA-1. I paired the with some RS-1's and I was literally in music heaven for a long time. I have no regrets in getting that amp. Unfortunately, I fell victim to upgraditis as we all seem to do so I sold it to help raise money for it's replacement. I've heard the RS-1's with a few amps and I don't think that there is an amp out there that matches them better than the RA-1. Truly sublime !
Young-ins tisk. Koss something or other and a (brand new, for the first time, Magnavox portabable stereo) 50 LBS. lightweight, but then on to (5yrs. later) a Sansaui 100 watt monster. Then to an Advent 15 watt reciever. and so on . Excuse me, but from Woodstock (bin-there and the worlds finest POT), it's been kinda a blure till about 1990. I used to get high on SDS and now it's a headphone amp. Or was that LDS, or may-be LSD.
My only regret is at the time I bought it I didn't realize how strong the Upgraditis affliction was. Had I known, I would have just bought a better/more expensive amp right off. I'm happy now with my Meier HA-2 MKII SE.