These amps have three selectable inputs-single ended, balanced, and current injection. The later requires the use of either the BMC DAC1 or the BMC PureDac, of which the latter is IMHO clearly the best. I have used these amps and used all three inputs. As l like vinyl, most of the time I have used only the first two inputs and had non-BMC preamps.
These amps don't sound like either a tube amp or a solid state amp. They are very neutral, clean, and transparent. And they are very powerful. And at 88 pounds each, they are very heavy. Were I to have only one home and to be able to leave them be in position in my listening room, I would be keeping them, but shipping or carrying them between homes is very difficult and expensive. Also I should add that I am now a dedicated user of High Fidelity Cables and on Star Sound Tech Rhythm racks and platform. I use their best cables which are expensive; so having a stereo amplifier rather than monoblocks saves me much money.
All of this is to say that I still highly value the B.M.C. M2s, but desire to sell them.
The Audio Beat review has a very lucid discussion of the innovations in these amps. See: http://www.theaudiobeat.com/equipment/bmc_system.htm. Mickelson concludes: "B.M.C. has put together a puzzle that for high-end audio had previously not been completed: mixing inspired design and Chinese manufacturing to produce electronics that compete on the highest levels at prices that don't. The makers of solid-state electronics, especially ones at the uppermost end of the price spectrum (they know who they are), should be concerned about B.M.C. -- very concerned."
The weight shown below is the combined weight of both amps in their shipping boxes.
If PayPal use "friends and family' or add 3% if "goods."
