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When you build what you believe to be the world's best pre-amp, you put a lot of time and effort into getting it right! With the NAC 552 Naim explored many designs and features before buildind the final model, it was then fine tuned following many hours of listening tests. fully suspended sub-chassis mounted circuit boards are used in the Naim NAC 552. This method of suspension maximises isolation, hence minimizing the effect of vibration on the highly sensitive electronic components. Carefully selected precision rotary potentiometers with precious metal wipers are used to preserve music integrity and ensure long-term stability.

Six inputs on the NAC 552 can be selected directly from either the front panel or the remote control. In addition to the usual DIN inputs, preferred for their superior earthing and impedance matching, the NAC 552 owner can configure two of the inputs for use with the more common RCA phono type connectors, enabling the use of alternative components with pre-owned interconnects. Each of the six inputs has separate listen and record facilities. A dedicated unity gain input is provided for use with the Naim AV2 processor or similar.

By adding the 555PS DR the NAC 555 is further improved. Originally designed to power the CD555, the 555PS features a massive transformer, for smooth delivery of instant power as required. Now, after a 2 year research project, the the 555PS DR has been introduced, Starting with the 555PS and improving it by introducing a new discrete regulator, improved transformer mountings, new wire gauges and cable routing, and a host of other improvements, such as new reservoir capacitors and mechanical decoupling, all these improvements significantly raise the performance of the 555PS DR and make the music even more enjoyable.

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