RM9 vs Audio Research Corporation VT100 MkIII
The VT100 MkIII's power @ 4ω is 110W against the RM9's 103W and its thd 0.300% against 0.500%. Both share power @ 8ω (100W) and class (Tube).
Both turn up in the same documented systems.
AI-generated product photo — not official manufacturer imagery.
AmplifiersPower AmplifiersTube AmplifiersDiscontinued
Estimated price (community-sourced)
$2,200
Around — community and catalog average, updates slowly
About the RM9
The Music Reference RM-9 is a high-output vintage tube stereo power amplifier manufactured in the early 1990s, with MkII versions produced into the early 2000s. It uses eight EL34 power tubes and four 6922 driver tubes, praised for its musicality, low THD (<0.05% in audio band), and stable power delivery across impedances. Reviewed positively by Stereophile (Class B), it is now a collectible item no longer in production, available primarily on the used market. Tested units often show ~90-100W output, with adjustable bias and excellent build quality. Variants include RM-9, RM-9 MkI, and RM-9 MkII, with minor schematic differences.
Specifications
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 100W @ 8Ω
- Power @ 4Ω
- 103W @ 4Ω
- Amplifier Class
- tube
- Minimum Impedance
- 2Ω
- Input Sensitivity
- 1.1V RMS
- Input Impedance
- 100000Ω
Analog Output
Analog signal output specifications
- THD
- 0.500%
- Output Impedance
- 0.3Ω
Connectivity
Input and output connections
- Bluetooth
- No
- Wi-Fi
- No
- Ethernet
- No
- Analog Inputs
- RCA
- Analog Outputs
- binding posts
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 451 × 165 × 298 mm (W × H × D)
- Weight
- 27.5 kg (61 lbs)
Key Specifications
Power: 100W
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions