Audionet STERN Preamplifier
The Audionet Stern preamplifier has rightfully earned its reputation as the best preamplifier in the world, offering an unmatched combination of engineering prowess and sonic excellence. Meticulously crafted with precision and attention to detail, it serves as the ultimate reference point for audio purity and refinement. The Stern's exquisite analog circuitry and proprietary technologies provide an unparalleled level of transparency, ensuring that every musical nuance is faithfully reproduced. Its dynamic range, tonal balance, and imaging capabilities redefine the boundaries of what's possible in high-end audio, making it the preamplifier of choice for discerning audiophiles and professionals seeking an audio experience that transcends expectation and redefines the meaning of sonic perfection.Designed by German design legend Hartmut Esslinger of Cupertino fame, our new über-performance preamp STERN combines Audionet’s unique electronics, stratosphere version, with a design quality that has not been seen in the realms of highenddom before.
The patented FLOATING PANE DESIGN encorporates the ultimate audiophile qualities.
One amp to rule them all – STERN rises high above anything, anywhere – even our serial show winner PRE G2 (2015 “best sound” at RMAF, AXPONA, T.H.E.SHOW and HIGHEND).
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Audionet's circuit and device design prioritize magnetic and capacitive optimization, eliminating the use of ferro-magnetic materials. The Floating Pane Design enhances resistance against microphonic effects and ensures temperature stability, while the body's floating panels are resonance-optimized through pads on an aluminum frame.
Transformers, constructed from stainless steel, are mounted and assembled with bolts with a double mono layout of circuitry and power supply maximizes channel separation. Air Flow Design circuit boards facilitate efficient cooling and stable quiescent currents while galvanic separation using opto couplers isolates all analog circuits.
The input, output, and volume control sections feature enhanced, discrete Audionet operational amplifier modules with cutting-edge mica capacitors. Finally, Rhodium Cinch jacks by Furutech and a volume controller on a double ball-bearing axis, equipped with a magnetic ratchet and optical sensing, contribute to unheard-of precision.
Technical Data
- Frequency response: 0–2,200,000 Hz (-3 dB), DC coupled
0.3–2,200,000 Hz (-3 dB), AC coupled - THD+N (Total Harmonic Distortion + Noise): < -104 dB @ 20 kHz, < -116 dB @ 1 kHz
- SNR (Signal-to-Noise Ratio): > 123 dB, 4 VRMS
- Channel separation: > 144 dB, 20–20,000 Hz
- Output impedance: 24 Ω real (Cinch line), 48 Ω real (XLR)
- Output current: max. 60 mA
- Power consumption: < 0.5 W stand by, typ. 100 W
- Mains: 220..240 V or 110..120 V, 50..60 Hz, Rhodium (Furutech)
- Dimensions (Vertical): Width 270 mm, Height 500 mm, Depth 505 mm
- Dimensions (Horizontal): Width 450 mm, Height 320 mm, Depth 505 mm
- Weight: 38 kg
The Audionet STERN boasts a DC-coupled configuration, ensuring an uninterrupted signal flow with no sound diminishing capacitors or coils and featuring the shortest possible signal paths. Each channel is equipped with a dedicated transformer for the positive and negative half waves, contributing to an optimal power supply setup.
The system includes four encapsulated and decoupled 50 VA toroid transformers, alongside main power supply capacitors totaling 22,000 µF and designed for minimal impedance, utilizing a silk dielectric. A high-resolution display, powered by a microprocessor control system with a separate power supply monitor, provides users with comprehensive control and feedback.
Additional features include a By-Pass mode for seamless integration into home cinema systems, Audionet Link outputs for remote control of compatible devices, user-definable names for each input, adjustable input levels, and a user-selectable function to eliminate DC levels from signal sources. The system also incorporates a Rhodium fuse for enhanced performance and reliability.
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