Audio Research LS15 Tube Preamplifier - Complete Package Set

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Audio Research preamps are clearly our best selling preamps. I'm guessing it's because of their build quality, simplicity, and ability to extract the most from common tubes.

The LS15 is just that - everything you need with no extra fluff.

Best of all this is a complete kit including the rare and optional remote, the owner's manual, and the box! We even have the screwdriver that was originally included to remove the top and install the tubes.

On the back you'll find a plethora of inputs and outputs in both XLR and single ended RCA's.

This preamp has been tested in our lab where it performed flawlessly.

Audio Research LS15 Tube Preamplifier - Owner's Manual

Click below to add our recommended matching cables from Kimber Kable, all brand new as SkyFi is an official Kimber dealer.

Kimber Kable - RCA Interconnects

Kimber Kable - XLR Interconnects

Kimber Kable - Power Cords

More from Audio Research:
The LS15 is an all-new line-level preamplifier which replaces the LS2/2BMKII series. It features all-tube gain (12 dB standard) using four 6922 twin triode tubes in a Class A, fully differential zero feedback (balanced) circuit with electronically regulated high and low-voltage supplies. The LS15 includes handheld IR remote control of all essential front-panel functions. An onboard microprocessor controls a 70-step electronic relay attenuator and 5-position input selector. An additional Direct input (balanced) provides a highest-signal-purity path for your favorite music source. A total of two balanced and five single-ended (including tape) dedicated inputs are included.

Main outputs are balanced and single-ended, with one pair of single-ended tape outputs. Spring-activated toggle switches activate electronic relays to control key functions with minimal signal degradation. Factory-set gain of 18 dB is optional at no charge. The anodized front panel is available in natural aluminum or black, cabinet style or with rack-mount holes.

Technical Specifications:
Tube stereo line stage

INTRODUCED
1996

OPTIONS
Platinum grey faceplate

MSRP (US NEW RETAIL)
$2,995 ($5k in 2021)

FREQUENCY RESPONSE
± .5dB, 2Hz to 30kHz at rated output
-3dB points below 0.3Hz and above 80kHz

DISTORTION (THD)
Less than .01% at 2V RMS balanced output

NOISE & HUM
25µV RMS residual IHF weighted balanced noise output with gain control at minimum, 98dB below 2V RMS output

GAIN
Main output: 12.5dB Balanced, 6.5dB SE
Tape output: 0dB

INPUT IMPEDANCE
200K ohms balanced, 100K ohms SE

OUTPUT IMPEDANCE
600 ohms Balanced, 300 ohms SE Main (2), 40K ohms minimum load and 1000pF maximum capacitance.

MAXIMUM INPUTS
14V RMS maximum balanced, 7V RMS SE.

RATED OUTPUTS
2V RMS (1V RMS SE) into 200K ohm Balanced load (maximum Balanced output capability is 30V RMS at less than 1% THD at 1kHz

POWER SUPPLIES
Electronically regulated low and high voltage supplies
Automatic 30 second warmup mute
Automatic brown-out mute

TUBE COMPLEMENT
(4) 6922/E88CC

POWER REQUIREMENTS
100-135VAC 60Hz (200-270VAC 50/60Hz)
35 watts maximum

OTHER
Vacuum tube audio circuit, solid-state power supply
Inputs: SE1, SE2, SE3, SE4, Bal, Direct (Bal) and Monitor (SE)
Outputs: 2 Main Bal, 1 Main SE, 1 Record SE

DIMENSIONS
19" (48 cm) W x 5 ¼" (13.3 cm) H (standard rack panel) x 10½" (26.7 cm) D. Handles extend 1½" (3.8 cm) forward of the front panel.

WEIGHT
11.6 lbs. (5.3 kg) Net
20 lbs.(9.1 kg) Shipping