As far as your question of the 502 vs. 302:
The 302 uses EL34 tubes and has the gorgeous midrange magic these tubes are known for.
The 502 uses 6550 which is more dynamic w/ a bit tighter control, but you will loose the magical lushness.
I had the 302 in a 2 channel HT system, from Jolida's owner, Mike's recommendation. There was a 3D human quality to music and movies that will simply stunning. As far as HT as you will use it dialogue in movies was absolutely inteligable at any volume level and music in movies was like being at a concert., and sound effect surounded you w/o 5.1. It was amazing!
The 302 uses EL34 tubes and has the gorgeous midrange magic these tubes are known for.
The 502 uses 6550 which is more dynamic w/ a bit tighter control, but you will loose the magical lushness.
I had the 302 in a 2 channel HT system, from Jolida's owner, Mike's recommendation. There was a 3D human quality to music and movies that will simply stunning. As far as HT as you will use it dialogue in movies was absolutely inteligable at any volume level and music in movies was like being at a concert., and sound effect surounded you w/o 5.1. It was amazing!