PA-1 vs Acurus A125x5
The A125x5's power @ 8ω is 125W against the PA-1's 100W, its thd 0.060% against 0.100%, and its weight 19.05 kg (42 lbs) against 21.8 kg (48 lbs). Both share class (AB).
AI-generated product photo — not official manufacturer imagery.
AmplifiersPower AmplifiersMultichannel AmplifiersDiscontinued
About the PA-1
The Nakamichi PA-1 is a Japan-built 5-channel home-theater power amplifier rated at 100 W per channel into 8 ohms with all five channels driven, intended for A/V and surround sound applications. It provides RCA inputs for front left/right, center (mono), and rear left/right channels, speaker binding posts that accept bare wire or banana plugs, a 12V remote trigger input and output for power control, and a standard IEC power inlet. The design is based on Nakamichi's Harmonic Time Alignment amplifier topology used in this series, offering wideband, low-distortion performance tailored to multi-channel use. Enthusiast teardowns report a robust internal build with a large R-core power transformer and approximately 60,000 uF of total filter capacitance, supporting high current delivery and stable operation across all channels, although these figures are from expert-derived sources rather than original consumer-facing literature. The PA-1 is known among users for clean, dynamic sound in 5.1 home-theater systems.
Specifications
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 100W @ 8Ω
- Amplifier Class
- AB
Analog Output
Analog signal output specifications
- THD
- 0.100%
Connectivity
Input and output connections
- Bluetooth
- No
- Wi-Fi
- No
- Ethernet
- No
- Analog Inputs
- RCA
- Analog Outputs
- speaker binding posts
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 432 × 216 × 419 mm (W × H × D)
- Weight
- 21.8 kg (48 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