PM94 vs Yamaha A-S1000
The A-S1000's power @ 8ω is 90W against the PM94's 140W, its signal-to-noise 98 dB against 92 dB, its damping factor >100 against >200, and its thd 0.015% against 0.010%.
AI-generated product photo — not official manufacturer imagery.
AmplifiersIntegrated AmplifiersDiscontinued
Estimated price (community-sourced)
$650
Around — community and catalog average, updates slowly
About the PM94
The Marantz PM-94 is a classic integrated amplifier produced from 1985 to 1991 in Japan. It features Marantz's unique 'Quarter A' operation, running in pure Class A up to about a quarter of its rated power, then switching to Class AB for higher output levels. This design provides 35 watts per channel in pure Class A and 140 watts per channel in Class AB into 8 ohms. The amplifier uses a triple push-pull MOS-FET output stage with four separate power supplies to reduce hum and crosstalk. It has a copper-plated chassis, oxygen-free copper wiring, and gold-plated connectors for superior signal integrity. The PM-94 includes separate bass and treble controls for each channel and allows bypassing tone controls for direct CD and phono inputs. The phono section supports MM and MC cartridges with a high-quality MC transformer. It weighs approximately 23 kg and measures 465 x 146 x 410 mm. The amplifier is known for its warm, detailed sound and robust build quality, making it a sought-after vintage high-fidelity component.
Specifications
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 140W @ 8Ω
- Amplifier Class
- AB
- Damping Factor
- >200
- Input Sensitivity
- 2.5V RMS
Analog Output
Analog signal output specifications
- THD
- 0.010%
- SNR
- 92 dB
- Output Voltage
- 0.5V RMS
- Max Output Voltage
- 1.5V RMS
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 465 × 146 × 410 mm (W × H × D)
- Weight
- 23 kg (51 lbs)
Key Specifications
Power: 140W
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions