I've decided to try out the bi-amp facility of the Yamaha RX-V0267. I have a 5.1 setup and I also have front presence speakers. I would like to keep the front presence speakers in use, but the only way to do this whilst also bi-amping the two main front speakers is to use an external amp in conjunction with the Yamaha's pre-outs. So, as getting equipped with 4 channels' worth of power amp kit for bi-amping the two front is pretty pricey (the fronts are Quad 21ls), I'm wondering about using a small external amp for just the two front presence speakers (which is doable according to the manual). My question is, what would be a suitable external amp to power two Quad l-ites (100w rms, 6 ohms)? Quad recommend amp power of between 30w - 120w for these speakers, but as they're only used for front presence effects, what could I get away with? A remote on/off function that works with the Yamaha's trigger function would be handy, but not essential as I understand external modules can be used for this. Has anyone tried this?