After listening to my updated VTSP-3A (from VTSP-3) for a few weeks I would like to add a few comments.
Much more detail and dynamics with greater bass heft are the main plusses. Also increased soundstage width and depth are more apparent with greater stereo separation.
I bi-amp using 4 Herron Audio M-1 monoblocks. Before the upgrade I used to listen at about 48 on the pre. Since the upgrade it is down to 38. Anything above 42-45 got a bit harsh for me. This is due in part because of prolonged break in and, I think more importantly, the fact that Keith Herrron has reprogrammed the volume contour so it gets a good deal louder after about 35. What I have done (as Keith suggested) is drop down from full gain to half gain on the pre. This was a good move I believe as it enables me to use a greater range of volume. It has also reduced the harshness I was experiencing to almost none and I'm sure it will go right away with full break in. A big thanks to Keith Herron!
Much more detail and dynamics with greater bass heft are the main plusses. Also increased soundstage width and depth are more apparent with greater stereo separation.
I bi-amp using 4 Herron Audio M-1 monoblocks. Before the upgrade I used to listen at about 48 on the pre. Since the upgrade it is down to 38. Anything above 42-45 got a bit harsh for me. This is due in part because of prolonged break in and, I think more importantly, the fact that Keith Herrron has reprogrammed the volume contour so it gets a good deal louder after about 35. What I have done (as Keith suggested) is drop down from full gain to half gain on the pre. This was a good move I believe as it enables me to use a greater range of volume. It has also reduced the harshness I was experiencing to almost none and I'm sure it will go right away with full break in. A big thanks to Keith Herron!