Roger Alan Modjeski (RAM) 1951 - 2019

 Never told anyone what I paid for the Mono-Blocks except Chad, just meant no one would believe IF I told them.
I don't think there will ever be a direct-drive for my Soundlabs without Roger. Not enough money in that venture, so only Roger would have built and tested it properly and for the right price.  
Impossible to compare Music Reference products with others, there is nothing comparable for sound, value and reliability. 
I do hope that the current MR products stay in production, for all those audiophiles who can't afford the reliable Atma-Sphere or Pass Labs offerings.

Wow, my good friend also named Roger who passed away five years ago had one of the RM9 MKII amps (he loved that amp), and that sound pulled me back into audio and got me excited about amplifiers and music all over again. Condolences to the family of one of the greats in the industry who's had a truly positive impact on people and audiophiles too.  

We have an RM9 Mk2 in the family as well and it’s mostly been reliable but it has suffered the odd quirk over 22 years, and not just tubes. The time the fuse blew at a home audio club event was not only frustrating, it showed the amp to have some physical design flaws, notably the location of the HT fuse underneath, inside the amp. It should be on the top panel somewhere in a safety fuse holder. The input stage and circuit board construction needs updating as well. Roger did know about these things but decided not to keep the RM9 in production, instead opting to make the excellent RM200.It would be good if the RM9 was put back into production, being a powerful all-tube circuit of classic Roger design. He wanted his amps to be as reliable as possible. To that end I’d probably refine and simplify the input stage to have no user adjustments, add automatic output stage biasing (not the same as cathode bias!) to bring it into the 21st century and bring the circuit board construction up to date, to keep his essential design but make it even more reliable. It could be the Mk3 version.

Come to think of it, I recall Roger made a special version of the RM9 with 6 input tubes, the extra one being a better driver tube (6BQ7, like the RM200) circuit for the output stage. He also added the self balancing input stage to eliminate needing to adjust it manually, and constructed it with no circuit board. That would be the ultimate amp, and have the best reliability along for the ride! I remember talking with him in the 90s about hard wired construction as being good but labour-intensive to build, and thus expensive. All my own amps have been hard wired to date and it’s good to see Roger did it too! The RM10 is hard wired, a good move.

That would be the RM9 SE. It does use 6 x 6BQ7 for the driver tubes. Like the MkII the amp had the fuses mounted on the top plate with LED indicators that lit up and indicated which output tube triggered the fuse to blow. There were also a number of test points on the amp to allow one to see the status of the tubes, but you needed to be comfortable using a voltmeter to run the tests. There was also a bias and balance adjustment. Roger made 20 of these amps and only 3 remain including his personal RM9 SE (Roger kept one piece of every amp he made).

What most people know about the RM9 is the amp can be used with EL34, KT66, 77, 88, and 6550 tubes. What most people don't know is Roger made a one off that used the 6L6 which pushed the power output past 250 watts per channel (stock RM9s cannot use this tube). It also featured a gloss piano black frame. Sadly it has sat in its box in the shop for quite some time.