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Rolls RA163 Distribution Amplifier

B&H # RORA163 Mfr # RA163
In Stock
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You Pay: $151.00
Product Highlights
  • Stereo Input x 4 Output
  • Mono Input x 8 Output
  • Balanced XLR Female Inputs
  • Balanced XLR Male Outputs
  • Individual Output Level Control
  • Single-Space 19" Rack Mountable

The Rolls RA163 Distribution Amplifier features 2 balanced inputs and 8 balanced outputs over XLR connectors. The RA163 will split a stereo input signal into 4 stereo outputs, or a mono input signal into 8 mono outputs. The unit can be used for high-end audio applications such as fixed-installations, sound reinforcement and more. Each output features individual level control dials and the chassis easily occupies a single space of a 19" rack enclosure.

Mono or Stereo Operation - mono input to eight outputs, or stereo inputs to four stereo outputs
+20dB Gain switch
All XLR jack inputs and outputs
Connectors Inputs: XLR Female x2
Outputs: XLR Male x8
Input Impedance 100k Ohm Balanced
Output Impedance 50 Ohm Balanced
Maximum Input Level +24 dBV
Maximum Output Level +24dB
Max Input/Output Gain 20dB
Signal-to-Noise Ratio >90dB
Frequency Response 10Hz - 40kHz, +/- 1dB
THD < .008%
Power 120VAC 50-60Hz, 15VA
Dimensions 19 x 1.75 x 6.5" (48 x 4.5 x 17cm)
Weight 7lb (3kg)
Rolls RA163 Distribution Amplifier
  • 1 Year Warranty

    by PowerReviews
    RollsRA163 Distribution Amplifier

    (based on 3 reviews)

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    Reviewed by 3 customers

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    works well

    By BR

    from WI

    Comments about Rolls RA163 Distribution Amplifier:

    working as promised..

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    (2 of 2 customers found this review helpful)


    Bass rolloff with 600 ohm loads

    By HDTVguy

    from Tahoe National Forest

    About Me Experienced

    Verified Buyer


    • Easy To Use
    • Low Power Consumption
    • Schematic Supplied
    • Small


    • Bass Rolloff At 600 Ohms

    Best Uses

    • Home Studio
    • Professional Recording

    Comments about Rolls RA163 Distribution Amplifier:

    This is a good distribution amplifier and for most users will not cause any problems. One excellent thing is that a manual is provided which includes a schematic diagram! Sadly very few manufacturers provide schematics anymore. Looking at the schematic, I discovered that the output coupling capacitors are only 10 microfarads. If the load you are driving is bridging high impedance (such as 10K ohms) the small capacitors won't be a problem. But if you have a 600 ohm load, then response will be down 3 dB at 45 Hertz. This will produce an audible deep bass rolloff. For a bridging 10k ohm load the -3dB point is 3 Hz. So the first thing I did with mine was to boldly void the warranty, tear into it, and replace all of the 10 microfarad output coupling capacitors with 100 microfarad nonpolarized capacitors. My modified unit will now drive 600 ohm loads without bass rolloff. My advice to users would be to set jumpers to remove any 600 ohm terminations (on devices driven by this DA). Keep your loads high impedance bridging. My advice to Rolls would be to increase the output coupling capacitor size or use DC coupling.

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    (0 of 1 customers found this review helpful)


    working as expected

    By Todd the User

    from Ann Arbor, MI

    Verified Buyer

    Comments about Rolls RA163 Distribution Amplifier:

    working as expected

    Share this review

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