Common Source Devices
Studio Monitor Controller
In addition to being able to drive a wide variety of headphones without sacricing performance, the RNHP is also capable of
receiving a wide array of signals with its 3 separately calibrated inputs. Here are some common examples:
“A” +4dBu Line (XLR or TRS) Devices “B” RCA Devices “C” 3.5mm Stereo Devices
Studio Audio Interfaces (Line or Monitor Out)
Headphone Mixers (Line Output or send low level HP out)
Mixing Consoles (Line or Monitor Out)
Professional Turntable Mixers (Line or Monitor)
Professional Stereo Digital to Analogue Converter
Professional Cameras
CD Players / DVD Players
Stereo Tuners
Preamplied Turntables
Prosumer Recording Devices / Cameras
Phones
Mobile Music Players
Computers
DSLR Cameras
Handheld Recording Devices
Any 3.5mm headphone output
Maximum Input Levels
XLR I/P: +22.8 dBu @1kHz, RCA I/P: +14.7dBu @1kHz, 3.5mm I/P: +3.3dBu @1kHz
Output Power:
As measured with headphones, Z=44 Ω: 3.617 VAC RMS @1kHz = 300mW RMS
Total Harmonic Distortion
0.002% Typical , .005% Worst Case with minimum load and maximum output
Output Impedance
.08 Ω @ 1KHz, 16-150 Ω load, 0dBu input
Frequency Response
+/- .2dB from 10Hz to 120KHz
Noise
With typical headphones, Z=44 Ω, BW 22Hz – 22kHz
XLR Input: -101.9dBV, RCA Input: -100.9dBVdBu, 3.5mm Input: -88.8dBV
Power Supply Requirements
24VDC @ 0.25Amp (6 watt) minimum. Use with supplied power adapter, as this has been carefully selected for best output
power and noise performance
RNHP:
Precision Headphone Amplifier
User Guide
User Guide p/n 775-00024 Rev B
RNHP: Precision Headphone Amplifier
Thank you for your purchase of the RNHP: Precision Headphone Amplier. Everyone at Rupert Neve Designs hopes you enjoy
using this tool as much as we have enjoyed designing and building it.
Front / Back Panel
Selects between inputs
A= +4dBu Combo Jack
Rupert Neve Designs
Near zero output impedance
headphones; Min. headphone
Heaphone Output
1/4” stereo output for
impedance: 16 Ohm
Input Select
B= -10dBV RCA
C= 3.5mm Stereo
A B C
Volume
High precision, highly-damped
continuously variable
stereo potentiometer for
amplifier volume control
RNHP Precision
Headphone Amplier
MIN
MAX
VOLUMEHEADPHONE INPUT SELECT
Rupert Neve Designs
Line input
Combo jack XLR
& TRS callibarated for
+4dBu, balanced signals
RCA input jack
calibrated for unbalanced
-10dBV signals
RIGHTLEFT
A
Model RNHP
RCA Input
B
R
L
Made in USA
3.5mm Input
3.5mm stereo input
designed for signals
from mobile devices
Power
Switches on the
headphone amplifier. On
each power up, the input
select defaults to “A”
POWER
1 0
C
24VDC
Power Input
24VDC, 0.25A Min (6 watt)
Use with supplied power
adapter for best performance
RNHP Overview
The RNHP is designed to deliver precise, extremely reliable amplication to any pair of headphones. Based on the headphone
amplier in our model 5060 Centerpiece, the RNHP is a dedicated 24V, reference-quality headphone amplier with calibrated
+4dBu Line, RCA and 3.5mm stereo inputs, housed in a rugged, VESA mountable steel chassis. With effortless, wide-open sonic
performance and the ability to drive any pair of headphones without compromise, the RNHP allows you to perform, mix and
enjoy your music with a new level of clarity.
Usage Notes
We recommend powering up the RNHP with the headphones disconnected to remove the load on the amplier during the
power on cycle.
Performance Monitoring and Unconscious Adaptation: One of the most critical roles for the RNHP is for encouraging the
very best performances from musicians. With many integrated headphone ampliers, non-linear frequency response, noise,
distortion and lack of headroom can be quite problematic when actual headphones are connected. While to many, these
ampliers may seem “good enough”, this overlooks the power of unconscious response. To understand why, one needs to
realize that the human brain and hearing system are interconnected both consciously and unconsciously. While the conscious
mind says “that sounds good enough”, the unconscious mind reacts to the cues fed back to it in ways that even experienced
artists can’t overcome. A prime example of this power can be observed with speech jamming applications, which make people
unable to speak uidly due to slightly delayed feedback of the voice (download one yourself to experience it). Although the
effects on a performer of a skewed frequency response or running out of headroom are subtle by comparison, a collection of
subtle emotional nuances in a performance can be what separates a good performance from a sensational performance. As
music lovers and music creators, our goal is to empower artists to perform and react to those nuanced emotions whenever
possible.
The Challenge of Reliable Performance with Headphones: Unlike static loads, the reactive load impedance that headphones
present can vary greatly depending on frequency, far more so than even loudspeakers. The result of this reactivity is that
the frequency response, noise and distortion of many ampliers will suffer when compared to the same amp with an ideal
resistive load. When using headphones for critical listening, mixing or deciding how to place microphones in the studio, these
shifts can provide a false account of the source material. The RNHP is designed with a near Zero Ohm output impedance to
minimize these issues in both individual headphones and when comparing multiple pairs of headphones. This performance is
imperative for those who need to trust the decisions they make with headphones.
VESA Mount: The RNHP may be mounted with any VESA 100 compatible mount. This may include pole mounts, wall mounts,
table mounts, or articulating arm mounts. These mounts can help to ensure the RNHP is always in the perfect position.
Multiple Line Feed: In some situations where you only have one pair of outputs but need to feed the RNHP and another device
such as speakers, a second headphone amplier, or a 2-track recorder, we recommend using a splitter cable from the Left and
Right line outputs to feed both devices from the same stereo pair.
High Power Headphone Amplication & Hearing Loss: The RNHP is designed with an abundance of headroom and power so
that it can perform comfortably during tracking sessions with high dynamic range and loud ambient volumes. This is to say that
the RNHP can make your headphones very loud if it is turned up too high, and that could cause permanent hearing damage.
Please be kind to your ears when using the RNHP.
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