The Nagra CLASSIC AMP was designed for extremely high quality installations, which require high power while maintaining a perfect musical delivery of the Watts. The unit operates in pure class A over a very large power band and beyond in class AB. Each of the output stages is based on tandem MOSFET transistors of exceptional characteristics.

• Generally, assembly of an equivalent output stage requires several pairs of transistors, which is difficult to achieve precisely. The simplicity of the CLASSIC AMP’s design is the key to its musicality.
• The input and driver stages also contribute equally to the overall performance and precision.
• The Nagra CLASSIC AMP is characterised by its stability, irrespective of the loads placed upon it.
• The power circuits drew particular care in the design stage.
• They are based upon an innovative concept: An overdimensioned transformer and a diode bridge are placed upstream of the PFC decoupling stage, used to actively correct the power factor.
• The filtering is achieved with a bank of capacitors, totalling 300 000 μF.
• This supply concept, which ensures efficient energy transfer, allows immediate reaction on even the most abrupt transients.
• The Nagra CLASSIC AMP is fitted with a traditional Nagra Modulometer on the front panel, showing the power of each output channel.
• An LED is also fitted to indicate saturations, excessive temperature and Mute.
• The amplifier is equipped with balanced and unbalanced inputs and in IN/OUT trigger function. It can be used in a bridged configuration, giving 1x 200 W into 8 Ω, and can also be used in a bi-amplification configuration if desired.