RM9

About the RM9

The Music Reference RM9 is a stereo push-pull tube power amplifier designed by Roger Modjeski. The original version uses four EL34 output tubes per channel and is rated at approximately 100 watts per channel; later RM-9 MkII models increased the rating to 125 watts per channel and incorporated design and convenience changes including a wood frame, upgraded binding posts, and top-mounted output-tube fuses. KT88/6550 output tubes were also available or supported in some versions. The amplifier is known for its substantial output-transformer design, adjustable input sensitivity, and powerful, musically engaging presentation. Specifications and features vary between the original RM9, RM9 MkII, and Collector’s Edition versions, so they should not be treated as a single identical model.