In the meantime, interest in the Kaluga monos was rising, perhaps even boosted by the fact that they were so hard to get – if at all. See just one reader letter including Srajan’s response to it: "Henk & Marja's 2012 introduction to the Mola Mola line of products was about as exciting as it can get for audio hardware reviewing. On the strength of that article, I traveled to a hifi show where the Mola Mola amplifiers and preamp were being demonstrated; and I sat for too long in the local distributor's room. I heard enough to place them on a very short list of future auditions. I also visited other dealers and listened to class D amplifiers that were priced between $3'500 and $12'000 Australian. On some occasions, I could listen to these amplifiers at home. In each case my interest and the possibility of purchase were genuine. After all, this mode of amplification had gone through a breakthrough where new levels of performance had supposedly been obtained. When the dynamics of a musical passage were low, listening to some of these amplifiers was acceptable. However, when the dynamic demands increased, I found dynamic range to be so distorted as to be unlistenable. This loss of  basic quality (listenability) did not occur with the Mola Mola demonstration." - Ian Lobb