TOPOLOGY

Peak Reduction Knob: Adjusts the threshold and the amount of compression. Wind the “PEAK REDUCTION” knob back to around 9 o’clock to add subtle compression to enhance the tone of your guitar and create a fuller, warmer tone. Turn the knob fully clockwise and the LA-1A becomes a leveler, squashing the signal dynamics and reducing the volume of loud notes relative to quieter ones.




Gain Knob: Adjust to add “make-up” gain to the compressed signal to match it with the bypass signal level. Provides up to +15dBu of tube boost with the “PEAK REDUCTION” knob set fully counterclockwise (zero compression).

Boost Knob: Adds up to +6dB of gain (on top of the make-up gain), which is useful when soloing on guitar, or bass. Further, you can use the boost to push the input stage of a tube amp very nicely too.

Attack and Knee Knobs: Fine-tune the compression to suit other instruments. For example, active 5-string bass guitars and nylon or steel string acoustic guitars fitted with piezo pickups. Or especially “difficult” instruments, such as hammered dulcimer, harpsichord or tar. Rotate the “ATTACK” knob clockwise to increase how quickly the compression kicks-in. The “KNEE” knob blends some of the “dry” signal into the mix to “lighten” the compression. Rotate the knob fully clockwise and the LA-1A becomes a limiter; and counter-clockwise for more subtle compression.

COOL STUFF

All Tube: Vacuum tube circuitry operating at real amp plate voltages for low background noise and stacks of headroom — the ultimate in audiophile performance!




True Bypass Switching:  Effectrode’s unique “anti-pop” foot-switching circuitry,

• Input impedance: Greater than 1MΩ • Output impedance: Less than 1KΩ




Dynamic EQ: With the toggle switch in the “down” position the LA-1A dynamically boosts high frequency material. This is fabulous for enhancing a Rickenbacker® 12-string to add some “jangle” & “sparkle” to the tone.

Balanced Direct Out: ¼” TRS (stereo) jack socket enables direct recording to mixing desk, computer sound-card or external audio capture device. This output is fully balanced and isolated by a Triad transformer to eliminate earth loops and reduce hum.

External Select: ¼” TRS (stereo) jack socket for connecting an external footswitch to control bypass and boost remotely. Compatible with standard latching footswitch types, such as the Fender® “Deluxe Reverb” amp vibrato/reverb dual footswitch.

MORE FUN SPECS...

Controls: Peak Reduction, Gain, Boost, Attack and Knee




Features: Dynamic tube equalizer, active tube boost and tube buffered output circuitry

All tube: Super low-noise parallel tube input stage (four tube sections) operating in class-A

Photo-optical: Ultra-linear, low distortion photoresistive attenuator (fast attack time < 1ms)




"Dakaware” Knobs: Bakelite Dakaware Chicago 1510 knobs custom manufactured for Effectrode in the U.S.A using the original 1940s molds.




LED: pulsates with modulation speed for visual song tempo matching.




Tough: The electronics are housed in a tough, powder-coated aluminum alloy enclosure with a baked epoxy silkscreen. Built for the road and to withstand the most punishing touring schedule.




Construction: Solid die-cast aluminum case.




Tough Light Grey powder coat finish.

POWER REQUIREMENTS

12VDC 1.0A Center Positive

Includes a 12VDC 1.5A Wall-Wart




High quality low-noise switched mode power supply operating from 100-240VAC mains input.




Supplied with various adapter plugs to facilitate connection to mains outlets in other countries. Compatible with all Effectrode pedals.

DIMENSIONS / WEIGHT

Inches: 7.5"(w) x 4.8"(d) x 1.3"(h)




Weight: 2.0lbs / 0.9kg

WARRANTY




Effectrode Thermionic

 warrants your pedal to be free from defects in material and workmanship for a period of five years from the original date of purchase.




The tubes, pots, footswitch and power supply are warrantied for a period of ninety days from the original date of purchase.