Single rackspace two channel all tube guitar preamp. Two broadcast type peak and dip equalizers and two tone controls in each channel combined with massive headroom provide unmatched dynamics and tonal versatility. The Character Generator circuit emulates the tube output stage / speaker interaction and also restores tube sound character when GP-1 is used with solid state tube power amplifiers and effects.

THE GP-1 GUITAR PREAMPLIFIER SPECS

INPUTS

• One front panel 1/4" phonejack
• One rear panel 1/4" phone jack
• Input Impedance: 1 meg ohm
• Inputs are protected with RF interference filters

CLEAN CHANNEL CONTROLS

Treble: Passive shelving type: +/- 15 db cut/boost starting at 400Hz

Bass: Passive shelving type: +/- 15db cut/boost starting at 400Hz

Hi Mid: Inductor/capacitor type EQ: +/- 12 db cut/boost at1600 Hz

Lo Mid: Inductor/capacitor type EQ: +/-12 db cut/boost at 470 Hz

Volume

LEAD CHANNEL CONTROLS
• Treble: Passive shelving type: +/- cut/boost starting at 400Hz
• Bass: Passive shelving type: +/- cut/boost starting at 400Hz
• Presence:Inductor/capacitor type EQ: +/- 12 db cut/boost at 1600Hz
• Midrange: Inductor/capacitor type EQ: +/-12db cut/boost at 440Hz
• Drive: Clean to full saturation
• Master Volume
• Output impedance: 600 ohms
• Tubes: 12ax7 (3)
• SN Ratio: Exceeds 75db, referenced to +4 dbm output
• Maximum output: +26 dbm max undistorted output
• Weight: 4 lbs
• Dimensions: Standard 19" single rackspace, 8" deep