PMA vs Plinius SA-250 mkIV
The SA-250 mkIV's power @ 8ω is 250W against the PMA's 200W, its signal-to-noise 100 dB against 104 dB, and its thd 0.050% against 0.090%. Both share class (AB).
AI-generated product photo — not official manufacturer imagery.
AmplifiersPower AmplifiersDiscontinued
Estimated price (community-sourced)
About the PMA
The Nagra PMA is a pair of mono-block, floor-standing pyramid-shaped solid-state Class AB power amplifiers manufactured from 2005 to 2009. Each monoblock delivers 200 W RMS into 8 ohms with a bandwidth of 10 Hz to 70 kHz (+0 / -3 dB) and typically 104 dB signal-to-noise ratio. Derived from the MPA family, the PMA uses a custom switching power supply with power factor correction to stabilize mains loading and improve power delivery, and it incorporates automatic power-saving/auto on-off control plus comprehensive protection circuits against over-temperature, DC offset, and clipping. Connectivity includes balanced XLR and unbalanced RCA inputs with selectable input sensitivity (1 V or 2 V) and high-quality WBT speaker terminals, while the sonic design goal is natural transparency and clarity in a compact 38 x 38 x 30 cm, 10 kg pyramid chassis per monoblock. Now discontinued, it is listed by Nagra among its historical products.
Specifications
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 200W @ 8Ω
- Amplifier Class
- AB
- Input Impedance
- 100000Ω
Analog Output
Analog signal output specifications
- THD
- 0.090%
- SNR
- 104 dB
Connectivity
Input and output connections
- Analog Inputs
- XLR, RCA
- Analog Outputs
- Speaker terminals
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 380 × 300 × 380 mm (W × H × D)
- Weight
- 10 kg (22 lbs)
Key Specifications
Power: 200W
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions