If you need assistance with your order, this website, or any of our products, please call us at 1-800-262-4675.


    Your Cart is Empty

  • AHB2 Power Amplifier Black

    Power Amplifier

  • HPA4 Headphone Amplifier Silver

    Headphone Amplifier

  • LA4 Line Amplifier Silver

    Line Amplifier

  • DAC3 Digital to Analog Converter Silver

    Digital to Analog Converters

  • 500-06203-447

    Benchmark NL4-XLR4 Headphone Adapter Cable for AHB2 Power Amplifier

    5 items left

    This adapter cable turns the AHB2 power amplifier into the ultimate headphone amplifier for driving headphones that require a high drive voltage. The AHB2 will deliver a drive voltage that is 9 to 10 dB higher than that of the very-capable HPA4 headphone amplifier.

    The AHB2 power amplifier is designed to drive 100 watts per channel into a pair of 8-ohm loudspeakers and for this reason, it delivers 28.28 Vrms on each channel at full output. This is more than enough voltage to let the smoke out of ordinary headphones, not to mention the associated hearing damage. This cable should only be used with headphones similar to those listed below. These headphone all have a voltage sensitivity that is less than 100 dB SPL at 1 V. Do not confuse voltage sensitivity with power sensitivity which is expressed relative to 1 mW instead of relative to 1 V.

    Use caution when connecting headphones to a power amplifier. Start with the volume control low and make sure your upstream electronics don't produce loud transients when switching on and off. Lack of caution can damage your headphones and your hearing.

    Recommended Headphone Applications

    We recommend this cable for the following headphones when driving them from an AHB2 power amplifier. We assume no responsibility for damage to your headphones or hearing (see the caution above). All of these headphones can be cleanly driven to very loud levels with the HPA4 headphone amplifier and this provides a safer solution than the AHB2. Both amplifiers will provide identical performance, but the AHB2 will have the ability to play louder. This cable is not required for the HPA4 and cannot be used with the HPA4.

    The peak SPL for each headphone-amplifier combination is shown below:

    HiFiMAN HE6 - (96.5 dB SPL at 1V), peak SPL with AHB2 is 125.5 dB, peak SPL with HPA4 is 117.3 dB


    HiFiMAN HE-6 Headphones

    HiFiMAN HE6se - (96.5 dB SPL at 1V), peak SPL with AHB2 is 125.5 dB, peak SPL with HPA4 is 117.3 dB

    HiFiMAN HE-6se

     HiFiMAN Susvara - (95.2 dB at 1V), peak SPL with AHB2 is 124.2 dB, peak SPL with HPA4 is 116.0 dB

    HiFiMAN Susvara

     Sennheiser HD 800 S - (93.0 dB at 1V), peak SPL with AHB2 is 122.0 dB, peak SPL with HPA4 is 114.2 dB

     Sennheiser HD 800 S

    ROHS and Pop 65 Statement Page