If you can get them at a great price, DO IT!
I have the ppp45's (no longer in production), which are the little brothers (50 wpc) to the Avalon (75 wpc) (still made). The ppp45's sound amazing; the Avalons are bigger, more powerful, and include cool LED's next to each tube that tells you when a given tube needs to be replaced. They are auto-biasing and require almost no maintenance. Don't quote me on this but the Avalons may also include balanced inputs.
Don't hesitate; these are outstanding amps that unfortunately don't get as much publicity as many other amps.
Michael
I have the ppp45's (no longer in production), which are the little brothers (50 wpc) to the Avalon (75 wpc) (still made). The ppp45's sound amazing; the Avalons are bigger, more powerful, and include cool LED's next to each tube that tells you when a given tube needs to be replaced. They are auto-biasing and require almost no maintenance. Don't quote me on this but the Avalons may also include balanced inputs.
Don't hesitate; these are outstanding amps that unfortunately don't get as much publicity as many other amps.
Michael