Benchmark Media Systems
LA4
Best reference level preamplifier for critical audio listening.
The Benchmark LA4 is a compact, analog line-level preamplifier designed for exceptional sonic performance. It offers two balanced (XLR) and two single-ended (RCA) stereo inputs, along with balanced and single-ended stereo outputs, and a mono summed balanced output. The LA4 features a high-quality volume control using precision resistors and gold-contact relays, ensuring precise control and avoiding potentiometer-related issues. Its reported specifications include an extremely wide frequency response, vanishingly low total harmonic distortion (THD), and a high signal-to-noise ratio (SNR), placing artifacts well below audibility. The preamp's professional audio-inspired maximum output is designed to drive low-gain power amplifiers for the lowest overall system noise, while maintaining remarkable cleanliness at lower output levels. Setup is made simple via a color touchscreen, allowing for custom input naming, level offsets, and screen dimming. Benchmark's bidirectional 12-volt trigger jacks offer control over other equipment. Designed, fabricated, and tested in the USA, the LA4 comes with a five-year warranty.
$2950.00
Owner Satisfaction
4.8
/ 5
Category Rank
10
/ 895
#10 in Phono Preamps
Price vs Category Average
-57%
Below average
Who it's for
- Critical listeners prioritizing signal purity above all else
- Audiophiles demanding exact channel matching and consistent listening levels
- Discerning buyers seeking durable, high-performance audio components
Who should skip it
- Budget-conscious consumers or those new to high-end audio
- Users desiring an all-in-one solution or integrated digital/analog conversion
- Design-focused individuals who prioritize visual appeal in their audio gear
Performance breakdown
Signal Transparency
Virtually zero coloration ensures the original recording remains completely untouched.
Noise Floor
Blacker backgrounds reveal subtle micro-details often lost in lesser preamps.
Dynamic Range
Effortlessly handles massive swings from quiet passages to explosive crescendos.
Input Versatility
Comprehensive connectivity options accommodate even the most complex high-end audio systems.
Build Integrity
Industrial-grade construction designed for decades of reliable, daily studio use.
Control Precision
Relay-controlled volume provides perfect channel matching at every single level.
Know before you buy
No, the LA4 is a line-level preamplifier, not a phono preamp. It is designed to manage line-level sources like DACs, streamers, or CD players, and does not include the necessary gain stages or RIAA equalization required for a turntable.
The LA4 uses a relay-controlled gain stage to ensure perfect channel balance and virtually zero distortion at any volume level. Unlike traditional potentiometers, this design eliminates tracking errors, meaning the left and right channels remain perfectly matched even at very low listening volumes.
No, the LA4 is a dedicated analog preamplifier. It is designed to be paired with a high-quality external DAC, such as Benchmark’s own DAC3, to provide a transparent and neutral signal path to your power amplifier.
Yes, the LA4 features both balanced XLR and unbalanced RCA inputs and outputs. It is designed to handle both formats seamlessly, making it highly compatible with a wide range of professional and consumer audio gear.
The LA4 is designed to be sonically transparent, meaning it aims to add no coloration or character of its own to the signal. It is intended for listeners who want to hear their source material exactly as it was recorded, without any added warmth or artificial emphasis.
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$2950