PREAMP II-S & Compact PSU

POWER SUPPLY ARCHITECTURE
The PREAMP II-S is delivered as standard with the Nagra Compact PSU. Providing 12 V / 2 A, it supplies the preamplifier with an exceptionally clean and stable power source.
Alternatively, the preamplifier can be ordered without a power supply for owners of a Nagra MPS or Classic PSU. The 12 V DC input uses the traditional LEMO connector, a hallmark of Nagra professional products for decades.
GAIN STAGE PHILOSOPHY
Two selectable gain settings allow optimal system matching while preserving signal integrity. Most systems will benefit from operating the PREAMP II-S at 0dB gain, where it behaves almost like a passive preamplifier while maintaining an exceptionally low output impedance of 9 ohms. This ensures precise control over any power amplifier. When additional gain is required, +6dB can be engaged via a front-panel toggle switch.

SILENCE AS A DESIGN PRINCIPLE
Nagra products are renowned for their exceptional measured performance, particularly in terms of noise. Decades of experience designing ultra-silent professional recorders are directly  eflected in the PREAMP II-S. With a dynamic range of 125 dB, it offers an extraordinarily quiet background, allowing music to emerge with maximum contrast and realism.