Nagra

MSA

MSRP not recorded

The Nagra MSA is a stereo amplifier manufactured by Nagra from 2010 to 2014. It uses Class AB amplification, delivers 60 watts RMS per channel into 8 ohms, and can be bridged for 120 watts RMS into 4 ohms; its output stages use a pair of MOSFET transistors in push-pull, common-source configuration, with an active-feedback switching-mode power supply incorporating PFC. The amplifier has a brushed-aluminium chassis, a 3 kg solid-aluminium-block-milled heat sink, XLR inputs, binding-post speaker terminals, a 10 Hz–75 kHz bandwidth, and a weight of 9.5 kg.

MSRP

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Original list price not on record.

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Specifications

Power: 60 watts RMS stereo 8Ω input 1 or 2 V 120 watts RMS bridged into 4Ω
Bandwidth: 10 Hz – 75 kHz +0/-0.3 dB
Monitoring: Front LED blinks if output current >9 A
Weight: 9.5 kg (20.9 lbs)
Mains power: 100 V, 120 V, 230 V at 50/60 Hz
Dimensions: 280 x 230 x 118 mm (11 x 9 x 4.6 inches) L x D x H"
Amplifier class: AB
Automatic start: Input signal >10 mV
Input impedance: 50 kΩ
Input connectors: XLR (Symmetrical)
Power consumption: Max 232 W, in stand-by (auto position) 1 W
Security circuits: Disconnect power stages if temperature >60°C (140°F) D.C. Speaker protection if DC >2.5 V
Channel separation: Typically 70 dB at 10 kHz
Harmonic distortion: <0.1%
Loudspeaker terminals: Binding posts (Cables up to 4.2mm, banana plugs 4 mm, spade 6.35 mm)
Signal to noise ratio: 109 dB ASA-A weighted