Benchmark USA
Benchmark LA4
Best line-level preamplifier for audiophiles seeking absolute signal transparency and purity.
The Benchmark LA4 is a sophisticated line-level preamplifier engineered to deliver an uncompromised audio signal path. It masterfully connects high-quality DACs to power amplifiers, meticulously avoiding the noise and distortion often introduced by conventional preamps. Its innovative relay-controlled analog design ensures exceptional purity, offering precise volume control and input switching without sacrificing fidelity. Experience a transparent, neutral sound that reveals every nuance of your recordings, providing an immersive listening experience with accurate imaging and true timbres.
$3050.00
Owner Satisfaction
4.8
/ 5
Category Rank
19
/ 92
#19 in Signal Processors
Price vs Category Average
-79%
Below average
THD
1250.00006
/ < - dB (%)
Who it's for
- Users preferring streamlined, modern touchscreen controls over physical buttons
- Audiophiles demanding absolute signal purity and zero coloration
- Listeners requiring perfect channel balance at every volume level
Who should skip it
- Owners needing integrated digital-to-analog conversion or phono stages
- Decor-focused buyers seeking an aesthetically striking centerpiece
- Budget-conscious shoppers prioritizing value over reference-grade performance
Performance breakdown
Signal Transparency
Virtually invisible in the signal path for absolute sonic neutrality.
Noise Floor
Industry-leading specs ensure your music emerges from a silent background.
Volume Precision
Relay-controlled steps provide perfect channel balance at any listening level.
Channel Separation
Dual mono architecture delivers a wide, stable, and immersive soundstage.
System Integration
Versatile output options and trigger support simplify complex high-end setups.
Build Integrity
Compact, robust engineering designed for long-term reliability and performance.
Key Specs
THD
< -125 dB (0.00006%)
SNR
> 135 dB, unweighted
Frequency Response
-0.003 dB at 10 Hz
Bandwidth
exceeds 0.1 Hz to 500 kHz
Output Impedance
60 Ohms
Output Noise
< 1.9 uV at Unity Gain
Max Input/Output Voltage
20 Vrms (+28 dBu)
Dimensions
8.65" W x 3.88" H x 8.33" D
Features
- Ultra-low noise and distortion for pristine audio
- Exceptionally revealing and accurate sound
- Neutral sound signature for musicality
- Precise 256-step relay-controlled volume
- Wide bandwidth for accuracy
- Dual Mono design for channel separation
- Multiple output options
- 12V trigger for system integration
What customers say
Users consistently highlight the Benchmark LA4's outstanding build quality and remarkable transparency. The precision of its relay controlled volume adjustment is frequently appreciated, offering a reliable and satisfying user experience. Its clean, professional design integrates beautifully into premium audio systems. Owners value the LA4 for delivering a pure, uncolored signal, free from added noise. This dedication to sonic integrity makes it a trusted choice for those desiring an honest and dependable listening experience.
Know before you buy
Unlike traditional potentiometers that can introduce noise or channel imbalance over time, the LA4 uses a 256-step relay-controlled system. This ensures perfect channel tracking and absolute transparency, as the signal path remains free of the mechanical degradation common in standard volume knobs.
No, the LA4 is designed to be completely neutral. Its primary goal is to act as a transparent bridge between your DAC and power amplifier, preserving the original character of your recordings without adding any coloration or distortion.
Yes, the unit features a 12V trigger that allows it to automatically power on or off in sync with your other connected components, making it easy to incorporate into a larger, automated audio setup.
The dual mono design physically and electrically separates the left and right channels. This configuration minimizes crosstalk and interference, resulting in superior stereo imaging and a more precise soundstage.
With a bandwidth extending from 0.1 Hz to 500 kHz, the LA4 is more than capable of handling the demands of high-resolution audio. It ensures that the subtle transients and wide dynamic ranges present in high-fidelity recordings are reproduced with extreme accuracy.
Absolutely. Given its ultra-low noise floor, high output voltage capacity, and exceptional signal-to-noise ratio, the LA4 is well-suited for critical listening tasks where transparency and precision are required.
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$3050