-40%
Audio Research LS-3B Preamplifier *AS-IS* (Read Description)
Audio Research LS-3B Preamplifier *AS-IS* (Read Description)
Audio Research LS-3B Preamplifier *AS-IS* (Read Description)
Audio Research LS-3B Preamplifier *AS-IS* (Read Description)

Audio Research LS-3B Preamplifier *AS-IS* (Read Description)

$ 161.04

Availability: 58 in stock
  • Type: Preamplifier
  • Number of Channels: 2
  • Supported Modes: Not Applicable
  • Audio Inputs: Stereo L/R RCA
  • Number of Inputs: 7
  • Power: Not Applicable
  • Audio Outputs: Stereo L/R RCA
  • Number of Outputs: 4
  • Color: Silver
  • Model: LS-3B
  • All returns accepted: ReturnsNotAccepted
  • Brand: Audio Research
  • Receiver Combo Features: Not Applicable
  • Surround Sound Formats: Not Applicable
  • Condition: 8/10 condition with no noticeable signs of damage or abuse. *NOTE* This unit will output sound, but the power switch is not functioning properly and needs to be replaced. No output through both unbalanced Main Out 1, unbalanced Main Out 2, and balanced XLR Out. All the inputs including Tape, Aux 1, Aux 2, CD, Video, Tuner, and Direct are passing audio through Tape Out. Tape Out passes clean audio through front left and right speaker channels. Input knob is functioning properly. Volume knob is not functioning due to defective Main Outs and XLR Out. This unit has not been further diagnosed, or repaired. It is being sold "as-is" and final.
  • Features: Analog

    Description

    About this product:
    FREQUENCY RESPONSE
    ±.5 dB, 2.0 Hz to 100 kHz. -3dB points below 1 Hz and above 200 kHz
    DISTORTION (THD)
    Less than .01% at 2V RMS output. (Typically less than .005% in midband)
    NOISE & HUM
    18 µV RMS maximum IHF weighted noise at main output with gain control minimum (more than 100 dB below 2V RMS output, or 4V balanced output (LS3B))
    GAIN
    Main output: 18 dB (optional 10 dB gain reduction) Tape output: 0 dB Balanced output (LS3B): 24 dB
    INPUT IMPEDANCE
    50 kOhms (100 kOhms Direct)
    OUTPUT IMPEDANCE
    250 Ohms main output. 500 Ohms balanced (LS3B). Recommended load 60K Ohms and 100 pF (20K ohms minimum and 1000 pF maximum)
    OUTPUT POLARITY
    -
    MAXIMUM INPUTS
    20V maximum
    RATED OUTPUTS
    2V RMS 2 Hz to 100 kHz, all outputs, 60K ohm load (maximum output 35V RMS (70V RMS balanced) (LS3B) at 1/2% THD at 1 kHz into 100K ohms)
    POWER SUPPLIES
    Electronically-regulated low and high voltage supplies. Line regulation better than .01%.
    POWER REQUIREMENTS
    100-135VAC 60 Hz (200-270VAC 50/60 Hz) 25 Watts maximum (35 Watts maximum LS3B)
    DIMENSIONS
    19" (48 cm) W x 5 ¼" (13.4 cm) H (standard rack panel) x 10 ¼" (26 cm) D. Handles extend 1 ⅝" (4.1 cm) forward of front panel. Rear chassis fittings extend ½" (1.3 cm)
    WEIGHT
    LS3: 11 lbs. (5.0 kg) Net; 20 lbs.(9.0 kg) Shipping. LS3B: 12 lbs. (5.5 kg) Net; 21 lbs.(9.5 kg) Shipping.
    SKU:
    UTRA1495679A
    Warranty:
    None
    What's Included:
    Factory packing, manual, power cord.
    Notes:
    8/10 condition with no noticeable signs of damage or abuse.  *NOTE* This unit will output sound, but the power switch is not functioning properly and needs to be replaced.  No output through both unbalanced Main Out 1, unbalanced Main Out 2, and balanced XLR Out.  All the inputs including Tape, Aux 1, Aux 2, CD, Video, Tuner, and Direct are passing audio through Tape Out.  Tape Out passes clean audio through front left and right speaker channels.  Input knob is functioning properly.  Volume knob is not functioning due to defective Main Outs and XLR Out.  This unit has not been further diagnosed, or repaired.  It is being sold "as-is" and final.
    Shipping Policy:
    If you require shipping to Alaska, Hawaii, or Puerto Rico, please contact us first before making an offer.
    Tax Information:
    Music Direct collects applicable sales tax on items shipping to the following states:  IL*, NV*, TN*, CO*, NY, CA, WI, NJ, IN, MI, CT, NC, MD, WA, MN, GA, IA, MA, TX, KY, PA, LA, SC, AZ, KS, OH, VA When required, Music Direct will also collect sales tax in other states. In other states where we don't currently collect sales tax, it may be the customer's responsibility to assure that all appropriate state use taxes are paid. * denotes states in which Music Direct has a physical nexus and is required to collect based on the nexus presence and location, these tax rates are not based on recipient/destination location of the customer within these states. For more information please see the following: South Dakota Vs. Wayfair.