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TYPE:

MDR

MIXERS

PRODUCT 

DESCRIPTION

MDR1688 

16-CHANNEL MIXER WITH DSP

SERIES

  

CATEGORY

MDR MIXERS

 

MIXERS

maximum dynamic range and a transparent audio signal. 
Finally, durable construction ensures reliable performance 
from venue to venue and session to session. Optimized 
for recording, live sound reinforcement and commercial 
installations, the MDR1688 is an ideal mixer solution, 
offering big sound in a compact package.

FEATURES

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 16 Inputs: 8 mic/line plus 4 stereo line

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 4-bit Digital Effects Processor with 256 Presets

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 3-band EQ with sweepable mids on mic/line inputs

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 4-band EQ on stereo channels

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 60mm faders

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 Standard 19-inch rackmount kit included

ARCHITECT’S & ENGINEER’S SPECIFICATIONS

The Samson MDR1688 shall be a tabletop audio mixer. It 
shall be a 16-channel design with 8 channels having XLR 
mic inputs and 4 channels being stereo channels. The XLR 
Mic channels are equipped with 3 band EQ with sweepable 
mids, line input, insert point, mic/line trim control, 75Hz 
low cut filter, 1 aux send with pre/post switch, 1 aux send 
to the internal 24 bit DSP effects unit with 256 presets, 
pan, solo, 60mm fader and alt bus 3⁄4 routing switch. The 
stereo channels shall have 1⁄4 inch inputs with left mono 
capability, +4/-10 gain switch, 4 band fixed frequency EQ, 
1 aux send with pre/post switch, 1 aux send to the internal 
24 bit DSP effects unit with 256 presets, pan, solo, 60mm 
fader and alt bus 3⁄4 routing switch. The main section shall 
have 1⁄4 inch alt 3⁄4 outputs, 1⁄4 inch control room outputs, 
1⁄4 inch main mix outputs, balanced XLR outputs, 60mm 
mix left, mix right and control room faders. The control room 
shall get its signal from the main mix, alt 3⁄4 mix, and the 
2TK input via 3 switches. The main mix shall get its signal 
from the main mix bus, alt 3⁄4 bus and the 2TK input via 
the main mix bus and 2 switches. 12 segment metering shall 
be provided with switchable AFL/PFL modes. There shall 
also be LED indication for power and phantom power. There 
shall be a 2 TK inputs on RCA jacks with level control and 
outputs on RCA jacks. There shall be an aux 1 master send 
level and aux 1 stereo return on 1⁄4 inch jacks with level 
control. There shall be an aux 2 master send level and aux 2 
stereo return on 1⁄4 inch jacks with level control and switch 
to apply the aux 2 signal to the aux 1 mix. There shall be a 
stereo headphone output on 1⁄4 inch TRS jack. There shall 
be a 24 bit internal effects unit with 256 presets, peak LED, 
and DSP mute. The mixer shall have a power on/off switch 
and a phantom power switch on the rear panel. The mixer 
shall have an external power supply.

©2008 Samson v1.0 6/08

GENERAL DESCRIPTION

Ideal for live performance installations, the MDR1688 
delivers superior audio quality and excellent value, along 
with an impressive feature set. 
The MDR1688 is a true professional 16-channel stereo 
mixer. Connecting all your microphones and instruments 
to this mixer is simple, with eight mic/line inputs plus 
four additional stereo channels. There are also dedicated 
stereo effects returns for the on-board digital effects, 
which are both numerous and impressive. The MDR1688 
features 256 digital studio-quality effects including 
delays, chorus, flanging and lush reverbs, which can be 
added to your vocals or instruments using the built-in  
24-bit multi-effects processor.
The mic/line inputs feature a 3-band equalizer with 
sweepable midrange control and there is a four-band fixed 
equalizer on each of the stereo input channels. Each of 
the stereo and mono input channels have two aux sends 
for an onstage monitor mix, built-in or external effects, or 
headphone mixing. Plus, aux one can be configured as  
a pre or post fader send. 
The MDR1688’s master section includes two stereo aux 
returns and a two-track input and output for playing back 
stereo devices and for recording your mix. Clean, clear 
sound reproduction with sweet equalization and signal-
flexible routing ensure dependable and remarkable sound 
for every performance.
High-quality, discreet, low-noise mic preamps with  
48-volt phantom power and 60mm faders give users the 
best possible sound with the best possible feel. A 12-
segment LED meter with VU ballistics also displays the 
main mix output. And to make the MDR1688 even more 
versatile, we include a standard 19-inch rackmount kit.
As like all of Samson’s MDR mixers, the MDR1688 
features advanced circuit design using carefully selected 
components at each stage of the signal path, giving you 

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