70 watts won't cut it!
These are great little floor standers that love power and can be hard to drive. My experiences with them left me with wanting a little more bass and softer in the highs. These are very "accurate" and a bright amp may not work well.
If I had to choose for your money, I'd look for an Aragon or a similar Class A rated solid state amp with "warmer" sound and built to withstand the speakers needs.
These are great little floor standers that love power and can be hard to drive. My experiences with them left me with wanting a little more bass and softer in the highs. These are very "accurate" and a bright amp may not work well.
If I had to choose for your money, I'd look for an Aragon or a similar Class A rated solid state amp with "warmer" sound and built to withstand the speakers needs.