New thread as I did not want to trespass on La Toilette's threat in DIY. I'm using Quad ESL63s and Gradient SE63s. For various reasons I'd like to try replacing the Gradient actve crossover with another. There seem to be plenty of Behringers on flea bay and this prompts a couple of questions - The Behringers seem relatively cheap, but are they any good? The Gradient crossover tends to rob the ESL63s of some of their magic, so I'd like something that does not. - Most of the active crossovers I've seen have balanced socketry, whereas my some of my kit has only RCA connectors. Is this an insuperable; problem or can one simply use a coverter. I'd be grateful for any thoughts/comments.