I am interested in this amp. Joined this forum to get an idea of what people who have the amp think. I would also like a few answers to my questions. 1. Can I connect a phonograph? Has anyone used this amp with S400 speakers? What do you think of the pairing with the S400. What are similar amps to the I150. I am looking for pure sound and not intense base. love my S400, but not thrilled with the pairing of the Roksan K3. I am new to this forum so no insults. Some science would be nice, but more interested in hearing about some comparisons before I order these for a try. Is this amp worth a try.