Avalon Acoustics is an idealistic group of musicians, artists, craftsmen, and engineers ISIS represents the ultimate acheivement in pinpoint accuracy from a full. AVALON ACOUSTICS ISIS Speakers. ISIS represents the ultimate achievement in pinpoint accuracy from a full range high energy transducer. Audio terms. Luidsprekers: 1 x 1" concave diamond diaphragm tweeter 1 x 7" concave ceramic midrange 2 x 13" Nomex-Kevlar composite woofers. Gevoeligheid: 90dB. Send me a personal email so we can look into doing this. Robert View Profile View Forum Posts View Blog Entries View Articles. ISIS represents the ultimate acheivement in pinpoint accuracy from a full range high energy transducer. Trcnet View Profile View Forum Posts View Blog Entries View Articles. I appreciate your offer to go on a tour of you and your friends systems in Toronto, and I may just take you up on it. How does one describe the indescribable? As for the Isis vs the Diamond it is a whole different world,It does everthing better. Good point,first off my room is 15x25 and the Isis throws a soundstage about twice as wide and twice as deep as a diamond. No Spectral mono blocks???? For now amplification will be from Bat. For over 25 years our world renowned designs have set the ultimate reference standard for audio reproduction. IMHO Isis is a much, much better speaker then Eidolon Diamond. By Pierre in forum Speakers. More extended at bottom the Isis and more accurate down there as well IMHO , with more dynamic ease and shadings. I also noticed your involvement in the "Game Over" thread in the digital forum. Given that I can't do an evaluation first hand, the best I can do is increase the likelihood of making a sound and reasoned judgement for myself. Digital front end or the Es. My blood has thinned out living in South Florida and I may not survive the winter visit to Toronto Each of our Musical Masterpieces is a work of art in itself, entirely handcrafted in the foothills of the Colorado Rocky Mountains. The d and MBL s on the other hand used in different pairings like my Dunlavy V and Zanden front end, can produce ' believable' life like sound. I take it your friend that is waiting for the Wilson MK2's to come out, is waiting for the Alexandria II's?