User Manual

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HARDWARE CONTROLS - FRONT PANEL
1. HI-Z Input
The front panel 1⁄4” input provides an active discrete DI circuit, which sends the
instrument’s signal through the entire preamp circuit, including the input transformer,
discrete opamp (operational amplifier) and output transformer. The thorough layout
of the HI-Z’s signal path ensures that instruments are subject to the same robust
preamplification as microphones. You can connect a variety of instruments via the
Hi-Z input on the front panel of the WA12 MKII , including: acoustic (with pickup)
guitars, electric guitars, bass guitars, keyboards, samplers, synth modules, and
drum machines.
2. HI-Z Switch
This feature engages the front panel 1⁄4” input and turns off the back panel
XLR input.
3. +48 Volt Phantom Power
The WA12 MKII has +48V phantom power available. This assures optimum
performance of your condenser microphones that require phantom power.
4. -20dB PAD Switch
Engaging this feature applies -20db to the incoming signal. This is a very useful
feature for reducing the level coming into the WA12 MKII and thus preventing the
signal from clipping or distorting. Use this feature when receiving a high output level
from a microphone or other device. Padding the input serves to provide increased
“headroom” for the operator and lessens the likelihood of signal overload.
5. POL Switch
This feature inverts the polarity of the microphone input signal. This can be useful in
aligning the phase of ‘opposing’ microphones in some recording scenarios, such as
microphones placed on the top and bottom of a snare drum, microphones in front
of and behind the speaker in an open-back guitar cabinet, etc.
CHAPTER 3: TECHNICAL SPECS
1
2 3
4
5
CHAPTER 4: HOOKUP DIAGRAMS
In this diagram, the WA12 MKII is used as a mic preamp to capture a
microphone signal and bring the signal into a recording interface.
Note: it is important to use a line level input on your recording device
as opposed to a microphone or instrument level input.
WA-2A
Recording interface
WA12 MKII