Yamaha Ri8-D

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8 mic/line inputs, 44.1/48/88.2/96kHz Dante™ digital network remote input unit. Rotary dial and dip switches for easy Rio ID set up.
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Yamaha Pro Audio
Mac & Win
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R Series I/O racks employ Dante network audio protocol for exceptional flexibility and freedom in setup and placement, while delivering natural, musical sound that brings out the full sonic potential of mixing consoles and other system components. They also allow redundancy for the utmost reliability in any application. Four models accommodate a wide range of I/O requirements.


Sonic performance that brings out the best in any system

The “natural, musical sound” that was a key element of the CL Series design policy is carried on without compromise in the R Series. Mechanical construction, circuit board layout, power supply, grounding, and parts selection have all been executed with meticulous attention to detail and quality, combined with exhaustive performance and listening tests at each stage of development. The result is eminently natural, musical sound.

Dante network protocol contributes to greater system scalability and flexibility 

The Dante network audio protocol developed by Audinate offers outstanding system scalability and flexibility. The required number of audio inputs and outputs can be placed wherever they are needed most, and the ability to implement redundant connections makes it possible to design a system that will keep going in the face of technical problems. With CL Series components a complete daisy-chained system can be easily set up without the need for network switches. Dante Controller software running on a personal computer allows flexible patching of devices on the network.

Support for CL series consoles as well as other Dante based systems 

CL Series components are not the only Yamaha professional audio devices that will work with R Series I/O racks. With the Dante-MY16-AUD Mini-YGDAI card from Audinate installed, the M7CL, LS9, DME64N, and other compatible Yamaha pro audio gear can be used with Rio Series devices in capable and robust Dante network systems. The Rio3224-D, Rio1608-D, and Ri8-D head amplifiers can even be controlled directly from the interface of the M7CL, LS9, or other compatible console.

Automatic digital-stage compensation for analog gain changes (CL series only) 

When multiple consoles are connected to one I/O rack unit, analog gain adjustments made by the console operators can result in unexpected level changes. The Rio Series features a gain compensation function that works with CL consoles to automatically compensate for analog gain adjustments in the digital stage, so that the sound level transmitted from the R Series I/O unit to the network remains constant.

Four models flexibly accommodate any system requirements

In addition to the Rio3224-D and Rio1608-D models that were released together with the CL Series consoles, input-only Ri8-D and output-only Ro8-D models are now available, making up a four-model lineup that reinforces the underlying Rio Series concept: “the number of inputs and outputs you need, wherever you need them.” The Ri8-D can be used as a portable input rack, and the Ro8-D can be used for output in an amp room, for example. The possibilities are extensive, making it easy to optimally match systems of any size or complexity.



General specifications

Sampling frequency rateExternal 44.1kHz: +4.1667%, +0.1%, -0.1%, -4.0% (±200ppm) / 48kHz: +4.1667%, +0.1%, -0.1%, -4.0% (±200ppm) / 88.2kHz: +4.1667%, +0.1%, -0.1%, -4.0% (±200ppm) / 96kHz: +4.1667%, +0.1%, -0.1%, -4.0% (±200ppm)
Signal delay Less than 3ms INPUT to OUTPUT, connect with CL5 using Dante, Dante Receive Latency set to 0.25ms (one way), Fs=48kHz
Total harmonic distortion Less than 0.05% [email protected]+4dBu into 600Ω, Fs=44.1kHz, 48kHz / Less than 0.05% [email protected]+4dBu into 600Ω, Fs=88.2kHz, 96kHz INPUT to OUTPUT, Input Gain = Min.
Frequency response +0.5, -1.5dB 20Hz-20kHz, refer to +4dBu output @1kHz, INPUT to OUTPUT, Fs=44.1kHz, 48kHz / +0.5, -1.5dB 20Hz-40kHz, refer to +4dBu output @1kHz, INPUT to OUTPUT, Fs=88.2kHz, 96kHz
Dynamic range 108dB typ., INPUT to OUTPUT, Input Gain = Min
Hum & noise levelEquivalent input noise -128dBu typ., Equivalent Input Noise, Input Gain=Max
Residual output noise -88dBu Residual output noise, ST master off
Crosstalk -100dB, adjacent INPUT/OUTPUT channels, Input Gain = Min.
Power requirements US/Canada: 120V 60Hz, Japan: 100V 50/60Hz, China: 110-240V 50/60Hz, Korea: 220V 60Hz, Other: 110-240V 50/60Hz
Power consumption 35W
DimensionsW 480mm (18 7/8in)
H 44mm (1 3/4in)
D 362mm (14 1/4in)
Net weight 4.5kg (9.9lbs)
Others Temperature Range: Operating temperature range: 0 - 40℃, Storage temperature range: -20 - 60℃

Analog input characteristics

Input TerminalsGAINActual Load
For Use With
Input LevelConnector
NominalMax. before clip
1-32 (Rio3224-D)
1-16 (Rio1608-D)
1-8 (Ri8-D)
+66dB 7.5kΩ 50-600Ω Mics &
600Ω Lines
-62dBu (0.616mV) -42dBu (6.16mV) XLR-3-31 type (Balanced)*1
-6dB +10dBu (2.45V) +30dBu (24.5V)

*1. XLR-3-31 type connectors are balanced.(1=GND, 2=HOT, 3=COLD)
*2. In these specifications, 0dBu = 0.775 Vrms.
*3. All input AD converters are 24bit linear, 128times oversampling.
*4. +48V DC ( phantom power ) is supplied to INPUT XLR type connectors via each individual software controlled switch. *5. Rio3224-D only

Analog output characteristics

Output TerminalsActual Source
For Use With
Max.Output Level
Select SW*4
Output LevelConnector
NominalMax. before clip
1-16 (Rio3224-D)
1-8 (Rio1608-D, Ro8-D)
75Ω 600Ω Lines +24dB (default) +4dBu (1.23 V) +24dBu (12.3V) XLR-3-32 type (Balanced)*1
+18dB -2dBu (616mV) +18dBu (6.16V)

*1. XLR-3-32 type connectors are balanced.( 1=GND, 2=HOT, 3=COLD )
*2. In these specifications, 0dBu = 0.775 Vrms.
*3. All output DA converters are 24bit, 128times oversampling.
*4. There are switches inside the body to preset the maximum output level. *5. Rio3224-D only

Digital Input & Output Characteristics

TerminalFormatData lengthLevelAudioConnector
Primary/Secondary Dante 24bit or 32bit 1000Base-T 24ch Input/32ch Output (Rio3224-D)
8ch Input/16ch Output (Rio1608-D)
8ch Output (Ri8-D)
8ch Input (Ro8-D)
etherCON Cat5e (Rio3224-D, Rio1608-D)
RJ-45 (Ri8-D, Ro8-D)

Digital Output Characteristics

TerminalFormatData lengthLevelConnector
AES/EBU OUT 1/2 - 7/8 *1 AES/EBU Professional Use 24bit RS422 XLR-3-32 type (Balanced)*2
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