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Loudspeaker designer/manufacturer John DeVore shows reviewer Ken Micallef his system.

And quite a system in it is!

At one point John tells Ken that he searched for the best amplifier of each "type" he could find, to use in the development of his various model loudspeakers. John explains in great detail how his speakers interact with different types of amplifiers.

Amongst the rare, unique, rather expensive, and/or otherwise unusual amps he chose, two more common and affordable models stick out: The Parasound A21, and for medium-power push/pull tube amps the Music Reference RM-10. John didn’t call it out by model number, but as he described it as a push/pull design using EL84 tubes it can only be the RM-10 (the only amp matching that description that Roger Modjeski ever marketed).

Modjeski marketed three push/pull amps: the first was the general purpose RM-9 (four EL34’s for 125w/ch)---a favorite of former Stereophile reviewer Dick Olsher, the second the RM-200 (a single pair of KT88’s for 125w/ch), designed to work unusually well with low impedance loudspeakers---Michael Fremer’s reference "affordable" tube amp for many years, and lastly the cute little RM-10 (a pair of EL84’s for 35w/ch). Modjeski said the sound of the RM-10 was his favorite of the three.

 

https://youtu.be/i9WYbi7afGQ?si=qkf8AiUCF_9_z2cl

 

128x128bdp24
tomic601's avatar
tomic601
13,153 posts
 

and don’t forget RAM Tubes with fantastic computerized curve testing against many critical to in circuit test points…. flunking out some 90% of current production tubes… still in business and i recall operated by @clio

bdp24's avatar
bdp24 OP
10,073 posts
 

 

@tomic601: Right you are, pal o' mine!

 

cfarrow's avatar
cfarrow
107 posts
 

@jasonbourne71

Another comment just to post and stir the pot with no backup just opinion. I have heard all 3 of the RM amps listed as my close audio friends in my area have owned them and used as references in their systems in the past. They were all well built and a nice sound used with Devore 93 and 96 speaker systems at one location and the higher powered amps used with Quad 63 speakers used at another.

rpeluso
1,097 posts
 

There were also a few (maybe 20?) RM9SE amplifiers manufactured.

I have one of them, purchased right after Roger died, and was told this was one of the remaining 3.

audioman58's avatar
audioman58
4,258 posts
 

Jason Bourne 71 did you personally measure these specifications 

or even have these amps in your Audio system ? I see this a lot ,

if there is a topic about anything , this applies to Everyone from tweaks like Fuses to sound isolation, to speakers to amplifiers if you have not spent time comparing and listening to ,comparing 

then you speak out of totally ignorance. A opinion without Any basis is just babbling .maybe take up a 2nd hobby , 

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