Mackie PORTABLE RECORDING PREAMP Manuel D’Utilisation

Owner’

s Manual

This is a 1/4" TS connector that accepts an unbalanced 

instrument-level input signal from a high-impedance 
instrument like a guitar.

These 1/4" TRS jacks provide a send and return point 

for channels 1-2. Use the INSERT jacks to connect serial 
effects devices such as compressors, equalizers, de-essers, 
or filters to each individual channel.

The INSERT points are after the GAIN controls, and 

just before the analog-to-digital converters. The send 
(tip) is low-impedance, capable of driving any device. 
The return (ring) is high-impedance and can be driven 
by almost any device.

Tip: Since the inserts are before the 
A/D converters, it’s a good place to 
strap a compressor on an unruly sing-
er to avoid overloading the A/D con-
verter without having to turn down 
the GAIN control a whole bunch.

Special insert cables are available, specially designed 

for this kind of insert jack. They are wired as follows:

 

Tip = Send (output to effects device) 

 

Ring = Return ( input from effects device) 

 

Sleeve = Common ground (connect shield to all  

 

three sleeves)

This is a female XLR connector, which accept bal-

anced microphone inputs from almost any type of 
microphone. The microphone preamps feature our new 
Onyx design, with higher fidelity and headroom rivaling 
any standalone mic preamp on the market today.

The XLR inputs are wired as follows: 

 

Pin 1 = Shield or ground 

 

Pin 2 = Positive (+ or hot) 

 

Pin 3 = Negative (– or cold)

This is a 1/4" TRS connector, which accepts a balanced or 

unbalanced line-level input signal from almost any source.

When connecting a balanced signal to the LINE 

inputs, wire them as follows:

 

Tip = Positive (+ or hot) 

 

Ring = Negative (– or cold) 

 

Sleeve = Shield or ground

When connecting an unbalanced signal, wire them 

as follows:

 

Tip = Positive (+ or hot) 

 

Sleeve = Shield or ground

This is a 1/4" TRS connector, which provides a second 

line-level input for each channel. It works the same as 
the LINE 1 input.

(TIP=SEND

RING=RETURN)

1

LINE

LINE

INSERT

ON

YX MIC PRE

 

4

3

2

1

6

5

(BAL/UNBAL)

LINE

LINE

INSERT

ON

YX MIC PRE

 

2/R

1/L

2/R

1/L

(TIP=SEND

RING=RETURN)

2