PM-KI Ruby vs Accuphase E-307
The E-307's signal-to-noise is 104 dB against the PM-KI Ruby's 107 dB and its power @ 4ω 140W against 200W. Both share power @ 8ω (100W) and thd (0.010%).
AI-generated product photo — not official manufacturer imagery.
AmplifiersIntegrated AmplifiersPhono Pre-AmpsHeadphone AmplifiersDiscontinued
Estimated price (community-sourced)
$2,399
Around — community and catalog average, updates slowly
About the PM-KI Ruby
The Marantz PM-KI Ruby is a premium integrated amplifier celebrating Ken Ishiwata's 40-year career. It offers 100W x 2 channels into 8 ohms, with a fully discrete two-stage design and separate power supplies. The amplifier includes a phono stage compatible with moving coil and moving magnet cartridges, a headphone amplifier, and multiple analog inputs. It is designed for audiophiles seeking exceptional sound quality and versatility.
Specifications
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 100W @ 8Ω
- Power @ 4Ω
- 200W @ 4Ω
- Damping Factor
- >500
- Minimum Impedance
- 4Ω
Analog Output
Analog signal output specifications
- THD
- 0.010%
- SNR
- 107 dB
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 440 × 127 × 453 mm (W × H × D)
- Weight
- 15.7 kg (35 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