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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THE AUDIONET STERN
It 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.
SPECIAL HIGHLIGHTS STERN
- Magnetically and capactively optimized circuit and device design without any ferro-magnetic materials.
- Floating Pane Design for optimal resistance against microphonic effects and temperature stability.
- The floating panels of the body are resonance-optimized by pads on an aluminum frame.
- Mounting and bolted assembly of transformers made of stainless steel.
- Double mono layout of circuitry and power supply for maximum channel separation.
- Air Flow Design circuit boards for an optimum of cooling and stable quiescent currents.
- Galvanic separation of all analog circuits by opto couplers.
- The input and output sections as well as the volume control are implemented using enhanced, discrete Audionet operational amplifier modules with state-of-the-art mica capacitors.
- Rhodium Cinch jacks by Furutech.
- Volume controller on a double ball-bearing axis and with magnetic ratchet and optical sensing.
- Volume controlled by electronic switches and real-time linearized precision resistor network.
- DC coupled with no sound diminishing capacitors or coils, shortest signal paths.
- One separate transformer per channel for the positive and negative half wave, leading to the perfect power supply.
- Four encapsulated and decoupled 50 VA toroid transformers.
- Main power supply capacitors 22,000 µF, optimized for very low impedance and made with silk dielectric.
- Total capacitance of 176,000 µF.
- Microprocessor control with separate power supply monitor and control of all functions, informing the user on a high resolution display.
- By-Pass mode for integration into home cinema systems.
- Audionet Link outputs for the remote control of further Audionet devices.
- User definable names for each input, input levels adjustable for each input.
- User selectable function to remove DC levels from signal sources.
- Rhodium fuse.
FEATURES
Function
Microprocessor controlled Ultimate Linear Preamplifier.
In- and Outputs
| Inputs: | 4 pair RCA line, Rhodium (Furutech) 2 pair XLR balanced, gold plated (Neutrik) 1 D Sub 9 serial port (control only) 1 SMA for WLAN (control only) |
| Outputs: | 2 pair Cinch line, Rhodium (Furutech) 1 pair Cinch inverted, Rhodium (Furutech) 2 pair XLR balanced, gold plated (Neutrik) 2 Audionet Link, optical 1 connector, gold plated, for additional earth connection |
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.
SPECIFICATIONS
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
REVIEWS & REFERENCES
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