The Funk Firm Houdini has added focus, lowered distortion, improved dynamics slightly but, most importantly, the music now floats out of the speakers in a way digital never really manages. This is in quite a high-end front end. Without exaggerating, I would compare the effects to a successful £2000 upgrade or 25% improvement in my set-up and I have had over 40 years of experience in getting the best out of systems. What is particularly interesting about Houdini is that I can’t think of an upgrade in any part of the Hi-Fi chain where quite that same improvement in space and perspective within the soundstage is achieved. The music sounds closer to the real event rather than just different.