ELI 1 and 2

The Two-Rock buffered effects loop interface (ELI) is an effective tool for the guitarist wishing to utilize a myriad of outboard effects with any guitar amplifier having preamp output and power amp input jacks. Although not shown in the interconnect diagrams, the unit can also be used at the front end (preamp) of any guitar amplifier to buffer the signal fed to the amp. The buffered interface eliminates the insertion loss of effects chains by eliminating impedance mismatches created by various outboard effects units. In addition, compensation for hi frequency signal loss resulting from multiple effects being daisy-chained as well as long cable runs can be implemented.

Signal Processing

There are 2 main sections to the Effects loop interface. The first stage consists of a high impedance vacuum tube buffer with a +20dB signal increase capability as well as a high frequency boost via a bright switch if desired. Signal is then fed to the effects chain. Signal returning to the unit is processed by a second buffered tube stage with controllable signal level attenuation and an additional bright switch. Virtually any combination of effects, even with long cable runs, can benefit from the correct application of this interface. In addition, tone shaping via EQ and additional gain available can be used to alter or supplement your sound. Experimentation with signal levels is encouraged as there are a variety of settings that prove satisfactory.

Quick Facts:

• All tube signal processing
• Input and output level controls and bright switches for EQ tailoring
• Single rack space mount or stand-alone (detachable rubber feet included)
• Built in power supply
• Extremely low noise floor
• 19" wide(at mounting tabs) x 1.75" tall x 9" deep Only 4 lbs
• Price: $1600 ELI 1 (mono)/$2000 ELI 2(stereo)

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