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Radial Engineering H-AMP Headphone Driver

B&H # RAHAMP Mfr # R800 8020
Usually ships in 7-14 business days

Availability Details


This is a special order item and is non-cancelable and non-returnable. Est. arrival at B&H is 7-14 business days (subject to availability). Your order will be charged at time of shipment.

International Orders*
For international orders, credit cards will be charged at time you place your order.

Free Shipping (USA)
You Pay: $199.99
Product Highlights
  • Connect to Amplifier or Speaker
  • Passive Design, No Power Required
  • Speakon Connections
  • One 1/4" TRS Headphone Output
  • One 1/4" or 1/8" TRS Headphone Output
  • Low, Mid, and High Fixed-Cut EQ Filters
  • High-Wattage Ceramic Potentiometers
  • Connect Up To Four H-AMPS Together
  • Neoprene No-Slip Pad
  • Steel Construction

The Radial Engineering H-AMP Passive Headphone Driver is a device that converts the high-level output of a power amplifier or amplified speaker into a signal that is suitable for headphones. It is useful for situations when you want to set up one or more separate headphone mixes from a PA system, such as from active powered speakers, passive speakers connected to an amplifier, or straight from an amplifier.

For connecting headphones to the interface, the unit includes two headphone outputs, one with a 1/4" TRS connector, the other with a selectable 1/4" TRS or 1/8" TRS connector. This allows you to use both large over-the-ear headphones and smaller in-ear monitors or ear buds. Both headphone outputs have a Level control and LED indicators to display signal presence and peak level. For connecting the PA system to the headphone interface, the device includes a Neutrik Speakon 4-pole input connector and a Neutrik Speakon 4-pole pass Thru. The pass Thru enables you to connect up to four H-AMP headphone interfaces together to expand the number of available headphones.

The unit also includes Low, Mid, and High fixed-cut frequency filters for adjusting the signal to suit different types of headphones and mixes. A Phone-2 Bypass button on the side allows you to assign the EQ filter to only the second headphone output. This is useful when you want to provide two separate sets of headphones with two separate mixes from one H-AMP headphone interface.

Discrete Construction
For optimal signal transfer and clarity, the device is built with 100% hand-inserted parts
EQ Filter
The fixed Low, Mid, or High EQ filter can be assigned to one or both of the headphone outputs
For controls, the device includes high-temperature custom-made ceramic potentiometers, capable of withstanding up to 200 W of power
Double-Sided Circuit Board
To reduce the amount of radio-frequency interference, the headphone-interface circuit is built with a full-ground plane to exacting military-grade standards of reliability
Steel Construction
For durability, the device is constructed of 14-gauge I-beam steel
Bookend Exterior Design
To protect the switches, knobs, and connectors, the device includes a bookend-style 14-gauge steel perimeter
No-Slip Neoprene Pad
So that it will not slip, the bottom of the device includes a neoprene pad
Circuit Passive, mono with variable level control
Input 1 x Speakon NL4FC - full-range speaker level
Pin +1 = speaker positive
Pin -1 = speaker negative
Maximum Input 400 watts RMS
Maximum Source Impedance 80 Ω typical minimum
Headphone Outputs 2 x 1/4" (6.35 mm) TRS
1 x 1/8" (3.5 mm) TRS
Mono with variable level control
Output Impedance 8 to 600 Ω headphones
Attenuation -28 dB with 40 Ω headphones
LED INDICATORS Signal present and peak overload
Filter High-, Mid-, and Low-cut frequency filters
Power Requirements No power required
Construction 14-gauge steel chassis with baked enamel finish outer shell
Dimensions (WxLxD) 3.3 x 5.0 x 2" (84 x 127 x 48 mm)
Weight 1.55 lb (720 g)
Radial Engineering H-AMP Headphone Driver
  • Limited Transferrable 3-Year Warranty
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