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Audio Research LS28SE Line-Stage - 13606

Audio Research LS28SE Line-Stage - 13606

by Audio Research
SKU 13606
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$12,000.00
$12,000.00 - $12,000.00
$12,000.00
$11,280.99
$11,280.99 - $11,280.99
$11,280.99

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Audio Research LS28SE Line-Stage - 13606

The LS28SE line stage is a flexible and intuitive preamplifier. Four balanced and four single-ended inputs, and two sets of both balanced and single-ended outputs, allow maximum connectivity. The straightforward menu allows control of numerous parameters, including input naming, tube hours, auto shutdown, and home theater passthrough. Phase invert and mono are also standard functions. At the heart of the LS28SE are four 6H30 vacuum tubes in the analog circuit. While the LS28SE is the perfect match for any Audio Research amplifier, it has been designed to work with nearly any amplifier on the market today.

The improvements in the LS28SE stem from what was learned during the creation of Audio Research’s Reference 160-series amplifiers. Very similar to the wire and parts changes incorporated in the REF6SE and REF PH3SE, the LS28SE also includes upgrading to the same proprietary gold coupling caps used in the REF6SE. These numerous and costly component upgrades elevate the LS28SE’s performance to an entirely new level. The improved clarity, resolution, transient snap, sense of space, and a relaxed purity are instantly noticeable and will inspire extended listening sessions.

Since 1970, High Definition has been more than our trademark; it has been our guiding principle for all products. The Foundation Series continues this passion and philosophy, offering the listener stunning playback, great value, and unparalleled long-term support.

Frequency Response +0-3dB, 0.4Hz to 200kHz at rated output (Balanced, 200k ohms load)
THD + Noise Less than 0.007% at 2V RMS BAL output
Noise Less than -100dBv at max volume (103)
Dynamic Range 122dB (AES17)
Crosstalk -105dB
Gain Main output: 18.5dB balanced; 12.5dB SE output. Record output: 0dB
Input Impedance 100K ohms Balanced, 50K ohms SE; 8 Inputs – 4 balanced, 4 single-ended
Output Impedance 600 ohms Balanced, 300 ohms SE Main (2); 20K ohms minimum load and 2000pF maximum capacitance
Outputs 3 outputs: 2 Main, 1 Record (XLR and RCA connectors)
Output Polarity Non-inverting
Maximum Input 16V RMS BAL, 8V RMS SE
Rated Outputs 2V RMS (1V RMS SE) into 200K ohm balanced load; Max balanced output: 17V RMS at <0.5% THD at 1kHz
Controls Rotary volume selector (103 steps), Rotary input selector, Push buttons: Power, Menu, Enter, Mono, Invert, Mute
Power Supplies Electronically regulated low and high voltage; Automatic 45 sec warm-up/brown-out mute; Line regulation better than 0.01%
Tube Complement (4) 6H30P dual triode
Power Requirements 105-125VAC 60Hz (200-250VAC 50/60Hz), 130 watts maximum
Standby Power 2 watts

 

Width: 19” (48 cm)
Height: 6.5” (13.7 cm)
Depth: 13.7” (34.8 cm)
Handles extend 1.6” (4 cm) forward of the front panel.
Weight: 16.0 lbs. (7.2 kg) Net; 24 lbs. (10.9 kg)
 
 

Audio Research LS28SE Line-Stage - 13606

The LS28SE line stage is a flexible and intuitive preamplifier. Four balanced and four single-ended inputs, and two sets of both balanced and single-ended outputs, allow maximum connectivity. The straightforward menu allows control of numerous parameters, including input naming, tube hours, auto shutdown, and home theater passthrough. Phase invert and mono are also standard functions. At the heart of the LS28SE are four 6H30 vacuum tubes in the analog circuit. While the LS28SE is the perfect match for any Audio Research amplifier, it has been designed to work with nearly any amplifier on the market today.

The improvements in the LS28SE stem from what was learned during the creation of Audio Research’s Reference 160-series amplifiers. Very similar to the wire and parts changes incorporated in the REF6SE and REF PH3SE, the LS28SE also includes upgrading to the same proprietary gold coupling caps used in the REF6SE. These numerous and costly component upgrades elevate the LS28SE’s performance to an entirely new level. The improved clarity, resolution, transient snap, sense of space, and a relaxed purity are instantly noticeable and will inspire extended listening sessions.

Since 1970, High Definition has been more than our trademark; it has been our guiding principle for all products. The Foundation Series continues this passion and philosophy, offering the listener stunning playback, great value, and unparalleled long-term support.

Frequency Response +0-3dB, 0.4Hz to 200kHz at rated output (Balanced, 200k ohms load)
THD + Noise Less than 0.007% at 2V RMS BAL output
Noise Less than -100dBv at max volume (103)
Dynamic Range 122dB (AES17)
Crosstalk -105dB
Gain Main output: 18.5dB balanced; 12.5dB SE output. Record output: 0dB
Input Impedance 100K ohms Balanced, 50K ohms SE; 8 Inputs – 4 balanced, 4 single-ended
Output Impedance 600 ohms Balanced, 300 ohms SE Main (2); 20K ohms minimum load and 2000pF maximum capacitance
Outputs 3 outputs: 2 Main, 1 Record (XLR and RCA connectors)
Output Polarity Non-inverting
Maximum Input 16V RMS BAL, 8V RMS SE
Rated Outputs 2V RMS (1V RMS SE) into 200K ohm balanced load; Max balanced output: 17V RMS at <0.5% THD at 1kHz
Controls Rotary volume selector (103 steps), Rotary input selector, Push buttons: Power, Menu, Enter, Mono, Invert, Mute
Power Supplies Electronically regulated low and high voltage; Automatic 45 sec warm-up/brown-out mute; Line regulation better than 0.01%
Tube Complement (4) 6H30P dual triode
Power Requirements 105-125VAC 60Hz (200-250VAC 50/60Hz), 130 watts maximum
Standby Power 2 watts

 

Width: 19” (48 cm)
Height: 6.5” (13.7 cm)
Depth: 13.7” (34.8 cm)
Handles extend 1.6” (4 cm) forward of the front panel.
Weight: 16.0 lbs. (7.2 kg) Net; 24 lbs. (10.9 kg)