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User Guide (English)
Introduction
Thanks for purchasing the Marantz Professional RHA6! RHA6 is a universal, multi-purpose mixer and
headphone amplifier for rehearsal, studio, or stage. Perfect for headphones, in-ear monitors, or
personal monitor mixing, RHA6 features six independent high-power stereo amplifiers in one
compact rack unit that delivers maximum audio quality, even at very high or very low volume levels;
RHA6 has a minimized circuitry path which means there's less stuff for your signal to pass through,
keeping your sound clear and crisp.
- Manufactured under QS9000 certified quality system
- Six independent high-powered headphone amplifiers in a compact, 1RU size
- Supplies six fully independent mixes for up to 18 pairs of headphones
- Stereo Aux Input on each channel with level adjustments
- Additional Direct Input on front panel to mix in additional sources
- Four-segment LED on each channel for easy visual monitoring
- Mono and Left/Right Mutes per channel for two mono mixes per channel
- High-quality components and exceptionally rugged construction
- Servo-balanced, gold-plated XLR and 1/4" TRS connectors
Box Contents
RHA6
Power Cable
User Guide
Safety & Warranty Manual
Support
For the latest information about this product (system requirements, compatibility information, etc.)
and product registration, visit marantzpro.com.
Sound Level
Permanent hearing loss may be caused by
exposure to extremely high noise levels. The
U.S. Occupational Safety and Health
Administration (OSHA) has specified permissible
exposures to certain noise levels. According to
OSHA, exposure to high sound pressure levels
(SPL) in excess of these limits may result in
hearing loss. When using equipment capable of
generating high SPL, use hearing protection
while such equipment is under operation.
Hours per da y SPL (dB) Example
8 90 Small gig
6 92 Train
4 95 Subway train
3 97 High-level desktop monitors
2 100 Classical music concert
1.5 102 Riveting machine
1 105 Machine factory
0.5 110 Airport
0.25 or less 115 Rock concert
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Features
Front Panel
1. Direct Input: Feeds an external audio source directly into
the main signal path.
2. Input Gain Control: Controls the signal level going to the
Main Inputs.
3. Input Level Meter: Displays the signal level coming from
Main Inputs. For the best quality of input signal, the LED
should range from 0 to +6 dBu. If the Clip LED (in the
Output Level Meter) is always on, reduce the input level
using the Input Gain Control.
4. Aux Input: Provides a separate stereo input signal which
can be mixed with the Main Input signal.
5. L Mute Switch: Mutes the left input signal.
6. R Mute Switch: Mutes the right input signal.
7. Mode Switch: Switches the operational mode between mono and stereo.
8. Mono LED: This LED lights up when the unit is in mono mode. When the LED is off, the unit is in stereo
mode.
9. Headphone Output: 1/4 TRS phone jack used to output the signal of the individual channel. There are
also 12 additional headphone outputs (two for each channel) on the rear panel.
10. Balance Control: Sets the amount of the signal coming from the Aux Input and Main Input. When a
signal is fed into the Aux Input, the balance control will regulate the ratio of the Main Input and the Aux
Input signals.
11. Output Gain Control:
Adjusts the output level of the individual channel.
12. Output Level Meter: Displays the output signal level. If the Clip LED lights up, turn down the input gain
control and/or the individual output gain control to avoid distortion.
Rear Panel
13. Power Connector: Use the included power cable to connect this connector to a power source. Please
check the voltage accepted by the unit and the voltage available from your power source before
connecting it.
14. Fuse Holder: If the fuse blows, replace it with a fuse of the same type.
15. Main Input Connectors: Balanced 1/4 TRS and XLR connectors used to input the stereo signal.
16. Main Output Connectors: Balanced 1/4 TRS and XLR connectors used to output the main signal. Use
these connectors to link several headphone amplifiers together.
17. Headphone Out (1-12): These are 12 additional headphone outputs (two for every channel) wired in
parallel with the output available on the front panel.
3 5 6
10
11
12
1 2 4
7
8 9
14
13
15 16
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