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Rolls SLC19 - Passive Stereo Level Attenuator

B&H # ROSLC19 Mfr # SLC19
In Stock
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You Pay: $49.95

The SLC19 from Rolls is a passive, stereo level control, designed to attenuate audio signal levels. Since the unit is passive, it can be used anywhere in a line level signal path, and won't change the audio quality of the source, as can happen with active electronics. The unit provides balanced XLR and 1/4" inputs and outputs, controls volume via a single rotary control and also provides an overall muting switch.

Applications for the SLC19 include controlling the outputs of keyboards, microphone preamps, audio levels from mixers to powered speakers, computers to desktop speakers and much more. The unit can also be used to attenuate high-output levels from certain condenser microphones, since the SLC19 maintains balanced operation, while passing through phantom power.

Passive, line level control with multiple applications
Placed before analog-to-digital converters for instance, the SLC19 can control the input level to the converters, thus preventing clipping
Can be used at the output of one piece of equipment to prevent overload on the next signal device, such as a hot microphone preamp output into a sensitive compressor input
Level control and mute switch for a pair of powered monitors
Passive line level control for extension speakers
Can be used for a high-output condenser microphone to tame its output, while still being able to receive passed-through phantom power
Inputs 2 x XLR
2 x 1/4" TRS phone
Outputs 2 x XLR
2 x 1/4" TRS phone
Controls and Indicators 1 x Rotary Control
1 x Mute Switch
Power Supply Passive device, not required
Dimensions (WxDxH) Desktop enclosure
Rolls SLC19 - Passive Stereo Level Attenuator
  • One (1) Year Warranty

    by PowerReviews
    RollsSLC19 Stereo Level Attenuator

    (based on 1 review)

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    Reviewed by 1 customer

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    A very simple solution

    By Rieka

    from SF, CA

    About Me Experienced

    Verified Buyer


    • Durable
    • Easy To Use
    • Low Cost
    • Low Distortion
    • Phantom power passthrough
    • Versatile


    • No phantom power block

    Best Uses

    • Events
    • Performances
    • Professional Recording

    Comments about Rolls SLC19 Stereo Level Attenuator:

    It's just a pad - but that is a good thing. This is a Swiss Army knife of pads. XLR and 1/4" trs i/o and totally passive attenuation makes it possible to tame overly hot condenser microphones, reduce line levels from a foreign sound feed (like a press box) to something your recorder can handle and much more.

    A consideration with any resistive level control is that it may be noisy - always a potential problem with continuous potentiometers, but step attenuators are much more expensive.

    One very useful addition would be the ability to switch from phantom power passthrough to blocking.

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