K&K Sound

The Trinity Pro Preamp allows for perfect balancing of a microphone and a pickup/transducer. Channel 2 is a designated mic channel with phase switch and supplies 9-volts to a lavalier type microphone. Each individual channel features volume, gain, +/- 20 dB bass, midrange, and treble filters. The EQ is accessible inside the box with trimpots. A convenient belt clip is included with this compact preamp, which weighs a mere ten ounces with the battery installed.

Aside from its strong bass, midrange, and treble filters (for each channel), it offers internal gain adjustments which set the pre-amplification factor from 1 to 10 (per channel). This means you can boost the input signal up to the 10-fold amount. It features two volume controls knobs on the outside of the box, one 1/4" stereo input (tip-pickup, ring-mic), a line level 1/4" mix output, and an optional 1/4" mic output that allows for splitting the two outputs for individual processing. Inside the box are adjustable controls for gain, bass, midrange and treble for each channel. The tone controls offer an incredible +/- 20 dB. This is a wider range than some big boards on the market today!

TECHNICAL SPECS
Frequency range: 10 - 30,000 Hz
Input Impedance: 1 Mega Ohm pickup -500K mic
Output Impedance: 3 K Ohm
Average Current: 4.5 mA
Battery hours: about 50
Dimensions: 110 x 85 x 38 mm / 4-3/8" x 3-3/8" x 1-1/2"
Input and Output Jacks: 1/4" instrument jacks
Phase switch on the mic channel
Bass, mid, treble EQ, gain and volume controls per channel