LS-3 Solid State Preamplifier By Audio Research
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Product Summary:
The LS-3 solid-state line stage features balanced dual-mono architecture, Class-A output stages, ultra-low noise performance, touchscreen controls, and a precision aluminum chassis, delivering rich tonal balance, spacious imaging, and dynamic, high-resolution sound reproduction.
Click To Read MoreTrial Period
90 Days (Exchange)
Countries Shipped
USA
Burn-In Time
200 Hours
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Price:
Audio Research, Preamplifiers, Solid State Linestages
LS-3 Solid State Preamplifier By Audio Research
$7,450
The LS-3 solid-state line stage features balanced dual-mono architecture, Class-A output stages, ultra-low noise performance, touchscreen controls, and a precision aluminum chassis, delivering rich tonal balance, spacious imaging, and dynamic, high-resolution sound reproduction.
Click To Read MoreProduct Description
Inspired by the acclaimed LS3 line stage first introduced in 1992, the current LS-3 combines classic audio engineering principles with modern solid-state performance. Its sophisticated design features a fully balanced differential JFET input stage, a bipolar transistor-based voltage amplifier, and pure Class-A output stages for exceptional sonic accuracy.
A true dual-mono architecture with separate power transformers, precision voltage references, and linear power supplies helps deliver ultra-low noise, impressive dynamics, and outstanding channel separation.
The elegantly crafted all-aluminum chassis blends contemporary styling with a timeless high-end audio aesthetic. A modern touchscreen interface offers convenient control over input naming, display brightness, color customization, and additional system settings, while maintaining a refined visual presentation inspired by the brand’s iconic meter design language.
Sonically, the LS-3 delivers a rich and engaging presentation with excellent speed, clarity, and dynamic impact. Music is reproduced with spacious imaging, impressive focus, and a natural sense of depth that enhances the listening experience.
Sharing the same precision-engineered aluminum enclosure as the LS-2, the chassis is designed for superior rigidity and stability, helping isolate sensitive circuitry for optimum audio performance.
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Specifications
- Frequency Response: +/-0dB 10Hz to 40kHz at rated output (Balanced, 100k ohms load)
- THD+Noise: Less than .007% at 2V RMS BAL output
- Noise” -75dBV at Max Volume (99)
- Crosstalk: -82dB
- Gain:
- 20 dB Balanced Output
- 20 dB SE Output
- Input Impedance:
- 25K ohms BAL and SE
- Output Impedance: 10 ohms BAL, 25 ohms SE
- Output Polarity:
- Balanced: Non-inverting
- SE: Inverting
- Power Requirements: 120VAC 60Hz 35W Maximum
- Standby: 4.2W
- Dimensions:
- Width 19″ (48.26 cm)
- Height 7″ (17.78 cm)
- Depth 17.5″ (44.45 cm)
- Weight: 33lbs (15kg) Net, 48lbs (21.8kg) Shipping
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Product Description
Lehmann Black Cube SE II – Precision Phono Stage for True Audiophiles
The Black Cube SE II builds on the acclaimed SE circuit, upgraded with superior sockets and an adjustable bass filter, allowing you to fine-tune your system to your personal listening preferences. Designed for maximum musical engagement, it delivers the sensation that your favorite recordings were crafted just for you, bringing instruments and vocals closer than ever.
Tailored for Every System
Compatible with nearly all MM and MC cartridges, the Black Cube SE II includes solder-free slots for custom impedance adjustments, plus an extra hardwired plug-in location for immediate flexibility. Optional matching resistors can be provided with your order at no extra cost, making it easy to optimize the phono stage for your system.
Audiophile-Grade Audio Circuitry
At its core, a high-precision passive RIAA filter network sits between two linear gain stages, built with surge-proof, narrow-tolerance polypropylene capacitors. This design preserves transients, dynamics, and timbres with exceptional clarity. Professional-grade input stages reduce noise while enhancing precision and power. Additional modules handle hum, high-frequency interference, and random voltage suppression, and the double-sided audio board ensures a low-interference signal path.
Dependable PWX Power Supply
The external PWX power supply features a custom toroidal transformer with static shielding, providing stable, safe, and powerful operation. Gold-plated Neutrik XLR connectors maintain secure connections, while shielded cables and mechanically damped aluminum housings minimize vibrations and interference.
Elegant Design
With a choice of silver, black, or chrome-plated front panels, the Black Cube SE II combines audiophile-grade performance with a refined aesthetic that looks as good in your HiFi rack as it sounds in your system.
Professional Endorsement
Known for its neutral, natural sound, Lehmann equipment is trusted by professional recording studios and music experts worldwide. The Black Cube SE II offers a high-fidelity listening experience that reveals every nuance in your favorite recordings.
Note: The sonic profile of Lehmann gear is perhaps the most neutral we can find. This brand is quite popular with our professional music/recording studio clients.
Reviews
AUDIO
“Upgraded to the SE version by the PWX, it was definitely poking the fire again like almost no other phono pre in its price range. Merciless heavy rock by Vanilla Fudge or massive bigband attacks by Count Basie were just about to blaze through the listening room. Pimped in such a hot manner, the Lehmann Black Cube SE II is state-of-the-art.”
https://jaguaraudio.com/wp-content/uploads/2021/06/EN-2020_01-AUDIO-Black_Cube_II.pdf
Hifi News
“This is a true audiophile phono stage and, partnered with equipment of equal quality, the results are remarkable. Indeed, the SE II is difficult to fault even compared to the competition in a much higher price bracket. The exceptionally low background noise allied to a fabulous rhythmic and tonal rendition makes it worthy of consideration for those seeking the most detail from their vinyl without having to make a hyperspace price jump.”
https://jaguaraudio.com/wp-content/uploads/2021/06/EN_review_Hifi_News_02_2010_SEII_screen.pdf
Hifi News
“To ?nd more depth and detail in music I know so well was a remarkable experience and I warmed to this little gem of a phono stage all over again.”
Specifications
The impressing technical details of the Black Cube SE II.
Sensitivity for output level 775 mV/ 0 dB (with activated high gain switch): MM: 3.8 mV/1 kHz; MC: 0.38 mV/1 kHz
Gain 1 kHz: MM: 46 dB; MC: 66 dB
Maximum input level 1 kHz: MM: 45 mV; MC: 4,5 mV
Signal to noise ratio (RMS unweighted): MM: 71 dB; MC: 63 dB
Gain: 36 dB, 46 dB, 56 dB, 66 dB
Channel separation: > 80 dB at 10 kHz
Input impedance: 47 kohms, 1 kohm, 100 ohms, 1 x custom load, 1 x hardwire slot
Output impedance: 47 ohms
Input capacitance: 100 pF
Channel mismatch: typ. 0.5 dB
Bass filter: 16 settings between 7 Hz and app. 90 Hz
Power consumption: < 3 W
Outer dimensions W x D x H:
Audio section: 114 mm x 124 mm 50 mm
PWX power supply: 93 mm x 233 mm x 45 mm
Weight:
Audio section: 0.6 kg netto
PWX power supply: 1.0 kg netto
Reviews
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