I usually don't do reviews, but am so impressed with the M-125's, plus the information I gleaned from this board that helped me make my decision, that I feel compelled to say how pleased I am. I love how the amplifiers look, I love the sound, and I am more than impressed with Bob Latino who helped me when I made stupid mistakes. Bob has the patience of Job, and never once asked me why I did something crazy. It must be that 40 years of teaching experience that gave him such tolerance. I can't say enough good things about Bob and his assistance. Once when I had no sound after completing the second amp, I sent a picture of the underside to Bob and within a few minutes he sent a message back saying I had left off a jumper wire.
I have to mention the packaging of the kits. My wife prides herself in packing, and she was more than impressed with how small a package and well put together it all was. The UPS guy carried the 80 pound package upstairs and inside for me. I tipped him well. The instructions on how to assemble the kits were great. The first kit went fine, it was the second that caused me problems. I didn't seem to read the instructions as well, as I already knew what to do, ha, ha.
The amps are driving 1965 Bozak B-313 speakers (used with the McIntosh). They sound better than they ever did. Did I tell you I am impressed? I am hearing sounds I haven't heard before. Amps have 4-KT120's in each plus Weber WZ68 copper caps, Golden Dragon 12AU7A in front of driver board with Golden Dragon 12BH7A in rear (both from the McIntosh 240). I had to change out one of the front tubes with another because of noise - thanks to Bob & the board leading me in the right direction.
After the amps were completed, I was getting a pretty consistent hum from both speakers, louder than from the McIntosh. It didn't matter whether the volume was high or low. All this time I had been blaming the aging McIntosh, but turned out that when I disconnected the Comcast cable to the cable box (which was connected to the pre-amp) the humming disappeared. It took me too long to figure this out. I tried a new ground from the Comcast cable to the existing ground for all in the house, but to no avail. I believe it was only grounded at somewhere outside of my yard. A Jensen TV Ground Isolator (VRD-1FF @$50) has been ordered and hopefully that will solve the problem. I read many good reviews of the Jensen. Meanwhile, the Comcast cable is not connected when listening to music and these amps are DEAD silent.
But there is more. The monoblocks that weigh ~38 lb. each are much easier to move around than the 53 lb. McIntosh. The nearly 50 year old McIntosh chassis is rusting in spots. I love stainless steel. Just completed a deck using only stainless steel hardware. Soldering and putting the kits together turned out to be very relaxing. I'm giving the Dynaco M-125's a 5 out of 5 for Looks (much thanks to that stainless steel chassis); 5 for Packaging; 5 for Quality of Parts; 5 for Assembly Instructions; 5 for the UPS Delivery; 5 for Sound; 5 for Enjoyment of Assembly; 5 for Bob's Kind Soul; and 5 for most importantly, my enjoyment of the entire package.
Thanks to all,