"Ah, you toy with my Soul! Life has not been the same since hearing your system. SPECTACULAR! These idle promises of hearing something better (not possible, really) are driving me crazy. Truly Russ, after what I heard, there is no way I could wait for the commercial version. I need some alternative until the ZUS magic is available. I don't think you really understand how incredibly bad my sound system sounds to me."

"Hi Russ, I remembered the first time that I listened to your ZUS prototype which is probably 4-5 years ago. At the time, my feeling was that for such a small system, the sound was very impressive. Especially, at the time, it was a prototype and the look of the system was really marginal. After all that time, when I heard your system again, it was quite a quantum leap from your first prototype. I started listening to your system hooked to your small $50 speaker with very cheap wire. If you blind folded me then and told me that I was listening to a pair $1,000 dollar speakers, I would have believed you. Then the real listening began when your ZUS amplifier was hooked up to my Wadia CD player and my ProAc Response 3 speakers using my Transparent cable for the speaker. The effect was amazing, especially on the sound stage. From a sound quality standpoint, I think my $10,000 J***** Vacuum Tube Amplifier can somehow match it (of course this is very subjective). However, as from a sound stage standpoint, ZUS was much better. The separation of different instruments is great, the depth of the sound feels like more than double of what my J***** system can do. The vocals sounded very “real” but still a little bit harsh, However, my J***** system has basically the same issue. Later on when you hooked up the PS Audio UltraLink D/A converter to the CD player, the vocal sound much more pleasing and rounded. That tells me both our systems are OK and the key was with the D/A converter. I also liked the sound of the piano; it was very “Hi-Fi”. I understand that there are 2 types of sound that is very difficult for an audio system to reproduce. One is applause (clapping) and the other is piano. I listened later to a track that contains applause. It sounded very “real” but I still think the piano sounded better! Later on, my wife told me that she was impressed by two things. First of all, she was upstairs and she heard a male vocalist singing. She asked me who the singer was but I forgot. Anyway, her comment was that it was very nice. She also listened to a piece from a Chinese orchestra which she likes. Later on, she told me that she could really feel that there was a whole orchestra in front of her where as in the past that she never heard that, no matter how I tried to guide her to the listening of the music. Probably I was still busy in terms of catching up with my work, so I had not hooked up my J***** system after you left. I think the major reason is that I will probably not listen to it for a while until I get your ZUS unit. In the past, I was told, and I kind of agreed, that the speakers were the most important element of a Hi-Fi system. If I was going to spend $10,000 on the system, probably, I would spend $4,000 - $5,000 on the speaker and the rest on the amplifier and the source. After listening to ZUS, I changed my mind. I now believe that the amplifier is the most important ingredient in the whole system."