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Fire-Eye RED-EYE INSTRUMENT PREAMPLIFIER User Manual

Fire-Eye RED-EYE INSTRUMENT PREAMPLIFIER
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Red-Eye Instrument Preamplifier
TM
The Red-Eye Instrument Preamp offers a simple direct-connect solution for musicians
playing instruments with high-impedance piezoelectric pickups. The Red-Eye Preamp
works well with instruments having passive or active piezo pickups or those with magnetic
pickups such as electric guitars and electric basses.
The Red-Eye Preamp’s impedance-matching field-effect transistor input circuit is designed
especially to match and track the impedance of passive piezoelectric pickups. That results
in a smooth, natural, balanced, acoustic instrument tone. Low distortion, low noise, and
generous headroom mean that clear tone comes through even when an instrument is
played percussively and loudly.
Features:
Input: Impedance-matching, accepts up to 2 volt peak-to-peak level without distortion.
Low-impedance, balanced, XLR output, 600 ohms with ground-lift switch,
Boost button with volume control for amplifying solos.
Treble control to boost or reduce treble. Response is flat when control is centered.
Usually powered by 48-volt XLR phantom power but has an internal 9-volt battery and a 9
to 18-volt center-negative, center-ground, power jack as alternatives.
Long 9-volt battery life (~200 hours). Battery is not used if other power is present.
Plugging an instrument in or connecting external power turns the Red-Eye on.
Pwr Chk Light illuminates for about a second if power is good when the preamp is
powered up. When powered up on the battery, the light will appear if the battery is in the
first ¾ of its life.
¼ inch output and input for effects accessory loop, suitable for stomp-tuners or effects
pedals or for output to on-stage guitar amps or PAs.
Internal filtering to reject radio-frequency interference from neon lights and cell phones.
Small Chassis Size: 1.25 x 2.25 x 4.25 inches. Weight: 10 ounces.
XLR
Output
to
Sound
System
Boost
Button
¼-inch
Output to
Accessories
¼-inch Input
from
Accessories
Boost
Volume
Control
¼-inch
Instrument Input
Power Chk
Light
Treble
Control
Red-Eye
Instrument Preamplifier
www.fire-eye.com
Balanced
Output
Instrument
Boost Light
9-18V
Power Jack
Ground Lift
Switch
Effects
9-18V
Effects
Gnd
Lift
Treble
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Fire-Eye RED-EYE INSTRUMENT PREAMPLIFIER Specifications

General IconGeneral
Channels1
TypeInstrument Preamplifier
EQ3-band
Inputs1/4" instrument input
Outputs1 x 1/4" TS
Power9V DC
Power Supply9V battery or external power supply

Summary

Product Overview and Features

Key Features

Details input impedance, output, boost control, treble control, power options, and filtering.

Red-Eye Preamp Signal Path

Signal Path Description

Details input/output impedance, frequency response, boost levels, and noise floor.

Usage Scenarios

Connecting to a Club's Sound System

Explains basic connection, treble control, solo boost, and tuner muting.

Using with Effects Pedals

Details connecting effects or a stomp-tuner in series with the effects loop.

Connecting to On-stage Guitar Amp or PA

Describes adding effects between preamp and PA, and preamp's control functions.

Passive Direct Interface Use

Highlights its function as a direct box with linear response, no power needed.

Performance Graphs and Contact Information

Boost Gain and Treble Response Chart

Visualizes boost gain and treble response across frequencies.

Contact Details

Provides contact information for technical support and inquiries.