Specifications
Section 4
4
97
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FAX
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97
Order Toll Free
1-800-543-4330
Fax
1-800-765-6960
CleanBOX Balanced/
Unbalanced Convertor
Two–way, stereo convertor provides total 
flexibility when interfacing consumer and professional
audio equipment. Perfect when using tape decks, MP3
players, computer sound cards with mixing consoles,
sound processors, professional preamplifiers and
amplifiers. Two stereo channels simultaneously match
balanced to unbalanced, and unbalanced to balanced
equipment. Stereo Channel 1: L/R unbalanced RCA
female inputs to L/R balanced male XLR outputs
Stereo Channel 2: L/R balanced female XLR inputs
to L/R unbalanced RCA female outputs. Each stereo
channel has its own level adjustment to compensate
for line level differences between pro and consumer
gear. Specifications: •Max output level: +18dB 
balanced, +12dB unbalanced •Max input level: +22dB
balanced and unbalanced •Input gain: -8dB balanced,
+20dB unbalanced •Power requirements: 12VDC, 
AC adaptor included •Dimensions: 4.625" (H) x 
5.625" (W) x 1.75" (D)
Order # (ea.)
555-2705 $49.95
MicroMIX Microphone
Preamplifier
Ideal when a 
line level input
on a mixing 
console, powered
monitor, computer
sound card or 
consumer home theater
component, is to be used
with a microphone. This 
preamplifier accepts balanced XLR, or unbalanced 
1
⁄4"
input, and provides balanced and unbalanced output.
The unit also provides switchable phantom power to
the microphone. Specifications: •Input impedance:
10Kohm •Max input level: +4dBV (XLR), +10dBV
(
1
⁄4") •Maximum gain: 50dB (XLR), 44dB (
1
⁄4") •IMD:
<0.01% •Frequency response: 20Hz~20KHz, with
less than 10% phase shift •Phantom power output:
36V •Power requirements: 12VDC, AC adaptor
included •Dimensions: 4.5" (H) x 
2.875" (W) x 1.5" (D)
Order # (ea.)
555-2730 $49.95
HeadAMP-V 
Five Channel Headphone Mixer/Amplifier
Versatile amplifier mixes multiple sources and 
provides five individually adjustable headphone 
outputs. The unique “Link” connection allows two
units to be interconnected, doubling the input and
output capability. Features: •Five 
1
⁄4" headphone 
outputs, each with its own level control •
1
⁄4" TRS
insert jacks on channels 1 and 2 for adding effects
•L/R RCA line level inputs •L/R 
1
⁄4" line level inputs,
the left input will also accept a mono connector and
mono mix •
1
⁄4" TRS link jack permits interconnecting
two HeadAMP Vs for 10 headphone channels, four
with inserts, and a total of four input sources
Specifications: •Input impedance: 10Kohm •Max
input level: +18dBV •Maximum gain: 26dB/channel
•Max output power 300mW/channel •Output 
impedance: 10ohm •S/N ratio: <90dB •THD:
<0.008% •Frequency response: 20Hz~20KHz
•Power requirements: 12VDC, AC adaptor included
•Dimensions: 1.25" (H) x 7.5" (W) x 4.75" (D), half rack
Order # (ea.)
555-2785 $89.00
CleanBOX II
Ground Loop
Isolator 
Ground loop
problems 
commonly
occur when
multiple 
audio 
components
are interconnected, with differing ground sources.
Normally, this problem manifests itself as 60Hz hum
(or some higher harmonic) in the audio system. The
CleanBOX II is a passive device, which features 
two independent channels, with transformer 
isolation between the inputs and outputs, for 
virtually no signal degradation. In/output 
connections are 
1
⁄4" TRS, and will accept balanced 
or unbalanced signals. Specifications: •Frequency
response: 10Hz~50KHz •THD: 0.01% typical
•Insertion loss: 4dB (100Kohm load) •Dimensions:
2.9" (H) x 4.5" (W) x 1.5" (D)
Order # (ea.)
555-2707 $34.95
ProMIX 
Three Channel 
Mic Mixer
Perfect when
up to three
microphones
must be used, and
only one mic input
is unavailable. The
unit features three 
balanced XLR female
mic inputs, each with independent level control,
switchable phantom power and switchable 3dB cut 
at 100Hz. Transformer balanced output is provided
via an XLR make connector. An isolated headphone
output is also provided for local monitoring. Requires
18VDC; Two alkaline 9V batteries (#292-035), not
included, or supplied 18V adaptor. Specifications:
•Phantom power output: 12VDC •In/output 
impedance: 600ohm •THD: <0.02% •Max 
output level: +14dB •Max input level: -14dB 
•Maximum gain: +60dB •Dimensions: 
5.625" (H) x 3.75" (W) x 1.75" (D)
Order # (ea.)
555-2770 $75.00
PowerMIX II 
Two Channel
Personal
Mixer
This personal
mixer accepts the
signal from two
mono line level
sources, and provides 
a line level output.
Additionally, a headphone
output is provided for local monitoring. It is ideally
suited for taking a line level signal from a piece 
of consumer electronics, such as a tape deck or 
CD player, and combining it with an electronic
instrument or wireless mic receiver output. 
Input #1 is a female 
1
⁄
4" jack. Input #2 is dual female
RCA (combined mono). Outputs are dual RCA
female jacks, plus a 
1
⁄4" female with may be used as a
headphone or line level. Each input channel has an
independent level control. Specifications: •Input
impedance: 10Kohm (CH1), 20Kohm (CH2) •Gain:
32dB max (CH1), 20dB max (CH2) •Power 
requirements: 12VDC, AC adaptor supplied
•Dimensions: 3.75" (H) x 2.75" (W) x 1.5" (D)
Order # (ea.)
555-2760 $35.00
PowerMIX III 
Three Channel
Personal
Mixer
This 
personal
mixer accepts 
signals from up
to three individual
stereo line level
sources, and provides 
a single, stereo output.
Additionally, two stereo headphone outputs are 
provided for local monitoring. Each input consists of
separate left and right 
1
⁄4" jacks. Each channel has an
independent level control, plus a L/R pan control if
mono inputs are used. Master level control controls
the mixed output level, and a single control sets the
level for both headphone outputs. Specifications:
•Input impedance: 10Kohm •Output impedance:
100ohm •Max gain: +27dB •Max input level: +30dB
•THD: <0.005% •Power requirements: 12VDC, 
AC adaptor supplied •Dimensions: 
5.625" (H) x 3.75" (W) x 1.75" (D)
Order # (ea.)
555-2765 $69.00
SplitCOM Mic
Splitter/Combiner
Ideal when 
a single 
microphone
must be run to
two inputs, such
as a mixing 
console and powered
monitor. Unit consists
of a female XLR input,
male XLR parallel output,
and second XLR output. Transformer isolation and
ground lift switch eliminate potential hum problems
and maintain proper impedance at both inputs.
Passive device requires no power source. Phantom
power will pass from input to the parallel output.
Dimensions: 3.75" (H) x 2.875" (W) x 1.75" (D)
Order # (ea.)
555-2775 $25.00
MacroMIX
Four
Channel
Personal
Mixer
Compact personal
mixer combines up to
four line level sources,
and provides both stereo
headphone and stereo line level output. Input one
and two each accept stereo L/R sources via RCA type
female connectors. Input three accepts a mono 
signal, from either a single 
1
⁄4" jack, or two paralleled
RCA type female connectors. Input four accepts a
mono signal from a single 
1
⁄4" jack. Each input has 
its own independent level control. Headphone output
is a stereo 
1
⁄4" jack, line outputs are stereo L/R RCA
type female. Specifications: •Input impedance:
10Kohm •Max gain: 32dB (input one), 26dB 
(all others) •S/N ratio: >90dB •THD: 0.008%
•Power requirements: 12VDC, adaptor included
•Dimensions: 5.626" (H) x 3.75" (W) x 1.75" (D)
Order # (ea.)
555-2725 $49.00
Professional
Audio
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