Using these speaker stands is easy. Just place your A5+, P4, HD4, HD6 or similar - sized speakers on top of the stands. Make sure they are centered and stable. As for the angle, adjust it to your preference for the best sound. When it comes to maintenance, a gentle wipe with a dry cloth every once in a while will keep them looking good. Avoid placing heavy objects on them as this could damage the stands. If you're moving them, handle with care to prevent any breakage.