Vac and Reference 3a is a great combination. I'm currently driving the Dulcet mini-monitors with the now-discontinued VAC Auricle Musiblocs. They put out 75W per channel. The new Phi Alpha 160 has even more power and should have adequate reserve to drive the Grand Veenas assuming you don't have a room the size of a gymnasium. I would imagine that you'd be happy with the combination. If I had the discretionary income handy, I'd personally spring for that combo in a heartbeat.