NAGRA HD PREAMP

Design and DevelopmentThe Nagra R&D Department, served by ten skilled and specialized audio engineers, worked on this project for three years with the goal of creating the most revealing and engaging preamplifier in the world. The audio engineers spared no expense and accepted no limitation in developing electronics, mechanics, power supply or in addressing thermal and vibration issues. Each stage of the design also included extensive listening sessions. The result is a striking product in terms of appearance, specification and performance. It will reshape the expectation you may have of what a preamplifier will add to your whole set-up, sources and amplifiers.

DevelopmentThe Nagra HD PHONO follows the introduction of the Reference Turntable and Nagra MC-4 moving-coil cartridge. Both the Reference Turntable and MC-4 Cartridge are state of the art contenders in their own rights and proved to be major assets in the finalization and fine-tuning of the HD PHONO.

Diamond Revision HDMI: A Year of DevelopmentDiamond Revision HDMI took Purist over a year of research and development, aimed at three things at once: better audio, better video, and a cable flexible enough to route behind equipment without fighting it.

The conductor is an alloy of copper, silver and gold, 32 AWG to 26 AWG depending on length, under triple shielding - and, as with everything Purist build, treated with the Triple (3x) Cryomag process.

TechnologyThe volume control is a patent-pending technology that allows perfect level matching with a much more transparent sound compared to potentiometers and switch resistor technology, because there is no attenuation of the input signal, just an automatic selection of a tap on the Nagra custom output transformer.

The newly developed SuperCapacitor power supply is a new technology which combines the very low noise of a battery with the high current capability of the best linear power supplies.

The audio engineers created a super vibration-free stand to lower the microphonic resonances to a new level.

GaN Systems TechnologyAt the heart of the Harmony GaNM lies a technology that represents a genuine leap forward in amplifier design. GaN transistors switch at speeds that traditional silicon simply cannot match. Where conventional silicon-based amplifiers struggle with switching losses and the distortion that accompanies them, GaN FETs operate with lower losses, significantly reduced distortion, lower thermal stress and a faster transient response.

For a Class D monoblock amplifier, this matters profoundly. Faster switching translates directly into cleaner transients, deeper bass, and more refined detail, especially at low-level passages where precision matters most.

Modular Technology and iTRONAll the electronics are housed in easily replaceable technology modules connected via a High Performance Multi Contact Connector. So you can easily expand or upgrade your system even after many years - and a semi-active TRIO can be upgraded to the fully active iTRON version at any time.

iTRON is our patented Game Changer technology, where we directly control the acceleration of the diaphragms through a perfectly orchestrated current flow rather than a voltage. The iTRON module delivers 3 x 100 watts in a fully balanced, single-ended, zero-feedback circuit.

Performance and SoundThe HD PREAMP has the best specifications ever achieved by any tube preamplifier, a floor noise lower than -160 dB and 5 Hz to 200 kHz frequency response with perfect phase integrity. The impedance input is 50 k Ohm and the output impedance is as low as 0.2 Ohm so that you can drive any amplifier on the market.

The HD PREAMP is able to accurately reproduce a square wave at 16 Hz.

And the sound! The HD PREAMP reproduces music giving a natural impression, full spectrum bandwidth and extreme stability.

It also produces a precise 3D holographic soundstage. It is very difficult to express the impact of this design as we didn’t think it was possible to achieve such an unbelievable result. Pure emotion!

Revolutionary Volume ControlThe volume control, the object of a new patent, allows perfect level matching with a much more transparent sound compared to pots and switch resistor technology, because there is no attenuation of the input signal, just an automatic selection of a tap on the Nagra custom output transformer. In addition, left and right levels are identical.