Rolls Bellari HA543 Stereo Headphone Amplifier

Rolls Bellari HA543 Stereo Headphone Amplifier

Rolls Bellari HA543 Stereo Headphone Amplifier

B&H # ROHA543 MFR # HA543
Rolls Bellari HA543 Stereo Headphone Amplifier

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Product Highlights

  • Stereo XLR & RCA Inputs
  • 3.5mm & 1/4" Stereo Headphone Outputs
  • Stereo RCA Pass-Thru Jacks
  • Low Distortion & Phase Shift
  • Enhance EQ Function
  • Adjustable Headphone Volume
  • Selectable Mute
  • Power Switch with LED Indicator
  • Includes Power Supply
  • Made in the USA
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Rolls HA543 overview

  • 1Description

The USA-made Rolls Bellari HA543 is a stereo headphone amplifier offering low-distortion amplification with minimal phase shift for musicians, producers, and engineers in home and project studios. It accepts a stereo source via balanced XLR or unbalanced RCA input jacks, and drives 3.5mm and 1/4" stereo headphone outputs. The stereo RCA output serves as a pass-thru, allowing the input to be connected to a monitor controller, home receiver, or audio recorder.

A single knob provides up to 20 dB of gain for the headphone jacks, which can be disabled via the mute switch. The Enhance function changes the tone sent to the headphone outputs while leaving the RCA output flat. The HA543 is powered via the included 15 VDC power supply, and features a power switch with an LED indicator.

Dual headphone outputs and stereo RCA pass-thru jacks
Balanced XLR and unbalanced RCA line-level input jacks
Adjustable volume with up to 20 dB of gain
Selectable mute function
Enhance function applies EQ designed to improve your listening experience when using low-quality headphones
Power switch with LED indicator
UPC: 675889005431
In the Box
Rolls Bellari HA543 Stereo Headphone Amplifier
  • PS27s 15 VDC 100-240 VAC Wall Power Adapter
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description

    Rolls HA543 specs

    Number of Channels 2
    Input Connections 2 x XLR 3-pin female jacks (one stereo pair, balanced)
    2 x RCA coaxial jacks (one stereo pair, unbalanced)
    Output Connectors 2 x RCA coaxial jacks (one stereo pair, unbalanced)
    1 x 1/4" TRS stereo headphone output (unbalanced)
    1 x 1/8" / 3.5 mm TRS stereo headphone output (unbalanced)
    Input Impedance Balanced: 20 kOhms
    Unbalanced: 10 kOhms
    Headphone Impedance 8 to 600 Ohms
    Maximum Input Level +14 dBV
    Maximum Gain 20 dB
    Output Power 326 mW per side, 652 mW per channel (62 Ohms)
    Frequency Response 3 Hz to 59 kHz ( 3 dB)
    Signal-to-Noise Ratio (SNR) 92 dB
    THD < 0.008%
    IMD < 0.008%
    Phase Shift < 10° (input to output)
    Slew Rate 2 V per microsecond
    Crosstalk -75 dB
    Function Controls Power, mute, and enhance switches
    Volume knob
    Display None
    Power Requirement 9 to 15 VDC via external power supply (included)
    Dimensions (W x H x D) 4.5 x 1.5 x 3.0" / 11.4 x 3.8 x 7.6 cm
    Weight 1.0 lb / 0.5 kg
    Packaging Info
    Package Weight 1.1 lb
    Box Dimensions (LxWxH) 7.7 x 4.5 x 3.0"

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