I am interested in buying a plate amp for a DIY subwoofer project. It must have at least 200 watts power into 4 ohms. It must have a rumble filter(it will be used with a ported design). I would be very interested in a used, but in good shape, AVA 250 amp or one of the PE 250 watt amps. A Canadian seller would be ideal, I am looking to spend less than $250 Canadian.