Rolls GCi404 AUDIO COMPUTER INTERFACE

The Rolls GCI 404 mixes a balanced XLR Microphone signal with a 1/4" Instrument signal and a group of stereo Line Input signals. The Microphone input has +12 volt phantom power, a variable Level control from no signal to +55 dB of gain, and a Balance control. The Instrument input has a Level control variable from no signal to +30 dB. The Line input group features three types of inputs; stereo RCA, stereo 1/8", and a stereo Phono preamp with grounding post and built-in RIAA equalization. These signals are mixed at the Line Level control.

Fits into drive bay in your PC or can be used externally

A ducking feature has been included in the Rolls GCI 404 which, when engaged and a signal is present at the microphone will duck the remaining input signals under the mic signal. The ducking controls are located on the rear panel and include Depth and Release Time controls. The Depth control adjusts the level of signal reduction by the ducker, the Release control varies the amount of time taken for the program material to return to its previous level.

The Rolls GCI 404 requires 12VDC; a Rolls PS27 power supply is included, or the unit may be powered by a computer’s internal drive power cable.

A CD input has been included on the rear panel for connection to the computer’s CD drive.

Outputs on the unit are stereo RCA and 1/8" as well as a 4-pin header to connect to a sound card.

Uses for the Rolls GCI 404 include commercial audio production, home audio voiceovers, phonograph record to cd recording, etc.

Rolls GCI 404 FEATURES
Microphone input with phantom power
Instrument input
RCA Line Input, Stereo 1/8" Line Input, RCA Phono Input with Ground post and RIAA equalization.
Individual Level controls for Mic, Instrument and Line Inputs
Automatic "Ducking" or talkover feature for Mic Input
Stereo RCA, 1/8" TRS stereo, or 4-pin header connector Outputs
Microphone input with phantom power
Instrument input
RCA Line Input, Stereo 1/8" Line Input, RCA Phono Input with Ground post and RIAA equalization.
Individual Level controls for Mic, Instrument and Line Inputs
Automatic "Ducking" or talkover feature for Mic Input
Stereo RCA, 1/8" TRS stereo, or 4-pin header connector Outputs
Technical Description

Mic Input

Input Impedance: 10K ohms bal, unbal.

Max Input Level: +4 dBV XLR bal, +10 dBV unbal.

Max Gain: 60 dB/XLR, 54 dB Õ in.

EIN: -108 dB max.

THD: <.01%

Phantom power: +21 volts, 6mA

Line Inputs

Input Connectors: RCA, 1/8 in. TRS Stereo

Input Sensitivity: 30 dB gain @ 1kHz, 47kW Input Z

Input Capacitance: 5pf + cable capacitance

Input Impedance: 50k ohms

Output Impedance: 100 ohms

Max Output Level: >10dB @ 1kHz at at 1% dist.

Frequency Response: +/-1.5dB 100-10K Hz (conforms to RIAA Equalization)

THD: .02% @ 1KHz

S/N Ratio :>80 dB unweighted

Instrument Input

Input Impedance: 50k ohms

Max Gain: 30dB

Output Connectors: RCA, 1/8 in. TRS Stereo, 4-pin hdr.

Dimensions: 1.7 in. H x 5.9 in. W x 3.7 in. D

Weight: 1 lb.

Power: 12VDC (Rolls PS27 Incl.)