This manufacturer "matched" pair of Mullard tubes speak for themselves. Built on Amperex equipment in Great Britain, they are unused to the best of my knowledge. The tubes have been removed for the original boxes for photography purposes only. According to Joe's Tube Lore they "owe a lot to the Amperex family for sound quality. This guy's got good bass, nice mids, and a wet, ambient sound stage." Known for precise imaging and ruggedness. I am rating 9/10 so as not to disappoint. As you know they are used as input tubes in the best equipment and they do make a difference!I haven't been on (new) A'gon for awhile but I have an excellent ratings record for many years - buy with confidence. I will have more tubes for sale in the 6922 and ECL86 families! Note: I will ship world wide based on actual cost. Based on the vagaries of shipment tubes are not returnable. I do use an excellent packer/shipper; I use his shipping recommendation internationally. Oh, please add 3.0% PP fee - I will waive it if you use Buy It Now!