BENCHMARK LA4 Balanced Preamplifier Silver

3/4 front view of BENCHMARK LA4 New
The Benchmark LA4 is a high-end, low-noise, low-distortion preamplifier. It incorporates relays for gain/volume control, mute functionality and input selection. Its amplification circuitry is entirely analog. Gain control features 256 levels of 0.5dB each, for a high level of precision.

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Reference : 18804
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2 900,00 € tax excl.
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BENCHMARK LA4 Balanced Preamplifier Silver

Photo of BENCHMARK LA4 preamplifier

The Benchmark LA4 is a high-end, low-noise, low-distortion preamplifier. It incorporates relays for gain/volume control, mute functionality and input selection. Its amplification circuitry is entirely analog. Gain/volume control features 256 levels of 0.5dB each, for a high level of precision. In all, no less than 40 gold-contact relays are used to switch resistor networks and ensure the LA4 preamplifier's operation. A remote control and touch-screen display provide easy access to the LA4's various settings. Connections include 2 balanced XLR and 2 RCA inputs, as well as a stereo RCA output and a stereo XLR output. There's also a bridged mono output on an XLR connector and two 3.5mm trigger 12V jack connectors. The LA4 is the perfect complement to the brand's AHB2 power amplifier.

BENCHMARK LA4: all-analog circuitry

The benchmark LA4's all-analog circuitry provides an optimum sound signal path for much lower noise and distortion than other devices on the market. The LA4 is specially designed for use with a high-end DAC and power amplifier. It can bridge the gap between a high-output DAC and a low-input power amplifier, and vice-versa.

BENCHMARK LA4: an exceptional level of precision

The LA4 preamplifier boasts a bandwidth extending from 0.1hZ to over 500KHz. This ensures extremely precise sound reproduction, with clear, natural harmonics.

BENCHMARK LA4: sophisticated aesthetics and ergonomics

The L4A's front panel touchscreen provides easy access to settings such as balance control, input level offsets, input names, screen brightness and function lock. A volume control knob features a high-quality optical encoder and 256 volume levels with 0.5dB/step resolution. A remote control enhances the user experience. Also, an "audio dim" setting is accessible via the display, allowing you to instantly reduce the volume level by 20dB. This facilitates the transition between normal listening and background levels.

Benchmark LA4 preamplifier overview

BENCHMARK LA4 connector diagram
12x XLR balanced stereo input
22x RCA stereo input
3RCA stereo output
42x Trigger 12V jack 3.5mm
5Mono bridged output
6XLR balanced stereo output
7Power IEC / Fuse slot

Technical characteristics

Specifications
Product typePreamplifier
Inputs2x RCA stereo input
2x XLR balanced stereo input
Outputs1x RCA stereo output
1x XLR balanced stereo output
1x Mono bridged output on XLR connector
Bandwidth0.1Hz-500kHz
SNR> 135 dB
THD< 125 dB (0.00006%)
ScreenTouchscreen
Trigger2x trigger 12V jack 3.5mm
Remote control
BALANCED OUTPUT MEASUREMENT (BALANCED INPUT, +24DBU)
THD< -125 dB (0.00006%)
SNR> 135 dB, unweighted, 20-20 kHz
> 137 dB, A-weighted
Frequency response-0.003dB to 10Hz, -0.001dB to 20kHz
Bandwidth-3dB exceeds 0.1Hz à 500kHz
Output impedance60 Ohms
Output noise < 1.9 à gain unitaire, 20-20 kHz
Maximum input and output voltage20Vrms (+28dBu)
Crosstalk< -133dB @ 1kHz, -116dB @ 10kHz
General
Alimentation100-240V AC 50/60Hz
Power consumption12W (Typ.)
17W (Max.)
Standby power consumption0.33W
Dimensions220 x 985.5 x 211.5mm
Weight8kg
ColorSilver
Package1x Benchmark LA4 preamplifier
1x Remote control
1x Power supply cable
 
Data sheet
InputXLR
InputRCA
OutputXLR
OutputRCA
ColorSilver
ClassN/A
Remote ControlYes
 
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BENCHMARK LA4 Balanced Preamplifier Silver
The Benchmark LA4 is a high-end, low-noise, low-distortion preamplifier. It incorporates relays for gain/volume control, mute functionality and...

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