Alan,
I had my MV45 since the mid '80s, driving a pair of Quads 57 with a PV6 as the line stage. I totally agree with you regarding its good sound. I guess it has something to do with the EL34's. Last year, I bought a pair of Quad 988s and felt the MV45 a little underpowered. So against all advices, I bought a Premier 140. My friends predicted that I would have to re-mylar my speakers in no time. But as it turned out, the 140 is quite a good match given the inefficiency of the Quads. The 140 is not as warm and sweet as the MV45, but just by a tiny bit. Its probably due to the 6550 output tubes it uses, its more open, dynamic and authorative. Overall, I think it sound much better than the MV45 and I highly recommend to look into the Premier 140.
I had my MV45 since the mid '80s, driving a pair of Quads 57 with a PV6 as the line stage. I totally agree with you regarding its good sound. I guess it has something to do with the EL34's. Last year, I bought a pair of Quad 988s and felt the MV45 a little underpowered. So against all advices, I bought a Premier 140. My friends predicted that I would have to re-mylar my speakers in no time. But as it turned out, the 140 is quite a good match given the inefficiency of the Quads. The 140 is not as warm and sweet as the MV45, but just by a tiny bit. Its probably due to the 6550 output tubes it uses, its more open, dynamic and authorative. Overall, I think it sound much better than the MV45 and I highly recommend to look into the Premier 140.