Hello,
I was using The VAC Standard Preamplifier and also the Audio Research Reference 1 Preamplifier. The Reference 1 did a nicer job but I changed the Bryston amp to the Audio Research Vt 100 MK II. That made the nicest difference. The Bryston has some harshness especially to the vocals and no matter which preamp was being used the vocals did not sound smooth. The Bryston has more than enough power but I am very happy with the 100 watt VT 100 instead.
I was using The VAC Standard Preamplifier and also the Audio Research Reference 1 Preamplifier. The Reference 1 did a nicer job but I changed the Bryston amp to the Audio Research Vt 100 MK II. That made the nicest difference. The Bryston has some harshness especially to the vocals and no matter which preamp was being used the vocals did not sound smooth. The Bryston has more than enough power but I am very happy with the 100 watt VT 100 instead.