MCM Electronics

Stereo Line Level Amplifier Adjustable 0 ~ 15dB GainMCM Part #: 50-14820  |  MCM Custom Audio Part #: 50-14820

Stereo Line Level Amplifier Adjustable 0 ~ 15dB Gain 4.8 stars from 2 reviews.
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Stereo Line-Level Boost Amplifier

Based on the LM-833N op-amp circuit, these amplifiers provide up to 15dB of exceptionally quiet gain. Intended for line-level correction, whether you are dealing with a long wire-run, or just have a piece of equipment with a low output, these line-level preamps will give you just the boost you need.

Product Description

    Features:
    • RCA female stereo inputs and outputs
    • Frequency response from 20Hz to 20kHz
    • 0-15dB adjustable gain
    • Input impedance 47K Ohms
    • Output impedance 100K Ohms
    • THD > 0.002%
    • S/N Ration of 85 dB
    • 12V DC power (adapter included)
    • Size (LxWxH) 4.29" x 2.87" x 1.69"

Product Reviews

  • "Win." by calraith on 2/22/2014
    Overall: 5 out of 5
    Value:
    Quality:

    Splitting the subwoofer output of my receiver into my subwoofer and my kinetic transducer amp also splits the LFE preamp signal, effectively halving the line voltage between the two destinations. The trouble is that my sub is apparently much more efficient than my bass shakers. In order to balance my system properly without a line driver, I was having to turn my subwoofer gain down to 25% and my bass shaker amp up to 100%. Of course, this resulted in high distortion. Even though the bass shakers aren't audible, low distortion is still preferable. Otherwise, I might as well just park my lawn mower in here and use that instead, for all the unfocused rumbling apathy my bass shakers were exhibiting toward my music even at low volume.

    Employing this stereo line driver between the split and the bass shaker amp allows me to set the amp's gain a lot more responsibly, resulting in the near eradication of distortion. With this line driver set to 10dB boost and the amp now also at about 2 o'clock, kick drums are a lot more staccato now. 808 style synth bass is much more focused. And even for jazz music, the Ralph Sharon Trio's doghouse bass is much more controlled now.

    As a side note, I was pleased that the wall wort for this line driver is in a horizontal orientation so it doesn't hog much real estate on a power strip. It's tiny, about the size of a Zippo lighter.

    If you're using a splitter on your RCA lines, you NEED this.

  • "Very clear audio preamplification ..." by psotirelis on 1/18/2014
    Overall: 4.5 out of 5
    Value:
    Quality:

    I use the digital optical output on my TV to send its audio signal to my amplifier. So I have using an inexpensive DAC (DAC FiiO D3). This DAC's line-out was too low in comparison to the other audio sources coming into my amplifier. So I needed some kind of low distortion pre-amplification. This product, the 50-14820 stereo line level amplifier, is providing exactly the pre-amplification that I required (but no more). I can't hear any distortion and it costs less than any other solution.

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Package Specifications & Dimensions
Weight:0.6 lbs.
Hazardous:No
RoHS Comp:Yes
Warranty:90 days
Need to Return?
Length:7 in.
Width:4.25 in.
Height:2 in.
Shipping Information
Extra Shipping Charge:No
Drop Ship:No
Catalog Pages
Catalog/Page:

MCM Cat 57, Page 298

PDF Reference

Requires Adobe Acrobat Reader.

Mfr. Info

MCM Custom Audio Logo
Mfr. Name:MCM Custom Audio
Mfr. Part Number:50-14820