hd PREAMP

PURE EMOTION

Almost 20 years after the release of the mythical preamplifier Nagra PL-P in 1998, Nagra is releasing the one of the most ambitious projects of its history, the HD PREAMP.

 

The Nagra R&D Department, served by ten skilled and specialized audio engineers, worked on this project for the past three years with the goal of creating the most revealing and engaging preamplifier in the world. The Audio engineers spared no expense or limitation developing electronics, mechanics, power supply and 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 just reshape the expectation you may have of what a preamplifier will add to your whole set-up, sources and amplifiers…

The 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.

 

The HDPREAMP has the best specifications ever achieved by any tube preamplifier, more than 160 dB of signal to noise and 5 Hz to 200kHz 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 you can drive any amplifier on the market.

 

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

 

And the sound !

 

The HDPREAMP reproduces music with natural impression, with 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 !

technical Specifications

Input impedance

 

Output impedance

 

 

Frequency Response

 

 

Dynamic range

 

Input level for 0 dB (on modulometer)

 

 

 

Harmonic Distorsion

(THD + N)

 

Crosstalk

 

 

Tubes

 

 

Dimensions

 

Weight

>  50 K Ohms

 

<  0.2 Ohms   Volume on -15 dB

<  40  Ohms   Volume on 0 dB

 

10 Hz - 100 kHz   +0.1 /-0.1 dB

10 Hz - 200 kHz   +1.5/ -0.2 dB

 

> 150 dB  Volume at -15 dB

 

Low: 1.0 V rms   Volume at  0 dB

High: 2.0 V rms   Volume at  0 dB

Studio: 10 V rms   Volume at  0 dB

 

See graphics FFT THD+N

@ 1 kHz, 1 V out, no load on the output

 

> -130 dB   1V rms     1 kHz

> -110 dB   1V rms  20 kHz

 

2 x E88CC New Old Stock

Selected and tested by Nagra

 

438 x 396 x 121 mm / 17.3 x 15.6 x 4.8 inches

 

30 kg / 66 lbs preamp and power supply

 

Note: these measures may change without notice as we constantly work on improving our equipment.

© AUDIO TECHNOLOGY SWITZERLAND

PURE EMOTION

Input impedance

 

Output impedance

 

 

Frequency Response

 

 

Dynamic range

 

Input level for 0 dB

(on modulometer)

 

 

Harmonic Distorsion

(THD + N)

 

 

Crosstalk

 

 

Tubes

 

 

Dimensions

 

 

Weight

>  50 K Ohms

 

<  0.2 Ohms   Volume on -15 dB

<  40  Ohms   Volume on 0 dB

 

10 Hz - 100 kHz   +0.1 /-0.1 dB

10 Hz - 200 kHz   +1.5/ -0.2 dB

 

> 150 dB  Volume at -15 dB

 

Low: 1.0 V rms   Volume at  0 dB

High: 2.0 V rms   Volume at  0 dB

Studio: 10 V rms   Volume at  0 dB

 

See graphics FFT THD+N

@ 1 kHz, 1 V out,

no load on the output

 

> -130 dB   1V rms     1 kHz

> -110 dB   1V rms  20 kHz

 

2 x E88CC New Old Stock

Selected and tested by Nagra

 

438 x 396 x 121 mm

17.3 x 15.6 x 4.8 inches

 

30 kg / 66 lbs

preamp and power supply

Input impedance

 

Output impedance

 

 

 

 

Frequency Response

 

 

 

Dynamic range

 

 

Input level for 0 dB

(on modulometer)

 

 

 

 

 

Harmonic Distorsion

(THD + N)

 

 

Crosstalk

 

 

 

 

Tubes

 

 

 

 

Dimensions

 

 

Weight

>  50 K Ohms

 

<  0.2 Ohms

Volume on -15 dB

<  40  Ohms

Volume on 0 dB

 

10 Hz - 100 kHz   +0.1 /-0.1 dB

10 Hz - 200 kHz

+1.5/ -0.2 dB

 

> 150 dB

Volume at -15 dB

 

Low: 1.0 V rms

Volume at  0 dB

High: 2.0 V rms   Volume at  0 dB

Studio: 10 V rms   Volume at  0 dB

 

See graphics

FFT THD+N

@ 1 kHz, 1 V out,

no load on the output

 

> -130 dB

1V rms     1 kHz

> -110 dB

1V rms  20 kHz

 

2 x E88CC

New Old Stock

Selected and tested

by Nagra

 

438 x 396 x 121 mm 17.3 x 15.6 x 4.8 inches

 

30 kg / 66 lbs preamp and power supply