Lehle D Loop

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Lehle D.Loop Switcher Drives and Switches 2 Effects Loops Simultaneously "What makes the Lehle boxes worthy of a place in your rig? They are virtually indestructible, they eliminate the dreaded interaction and ground loops between output channels and amps, they are dead quiet, passive and your precious tone will not be altered one little bit." - The Tonequest Report/May 2003 In response to numerous requests from guitarists, Lehle is pleased to announce the introduction of a fully programmable Dual Effects Looper/Switcher called the "D.Loop". The unit allows the guitarist to switch in effects loop A, effects loop B, or both effects loops at the same time (all in stereo). A buffered input which changes impedance from high to low can also be switched in, allowing the player to utilize long cable runs or clean effects with maximum effectiveness. In addition, the D.Loop is MIDI capable. The Lehle D.Loop can use any power supply between 8 and 20 V with either polarity (AC or DC). The supply voltage is internally rectified and stabilized in order to guarantee trouble free operation. High intensity LEDs behind a magnifying lens makes it easy to read switching state (Buffer, Loop A, Loop B) even under bright spotlights. All Lehle switchers are totally passive. To the purist, what this means is that the great tone you bought your particular tube amp for in the first place will not be comprimised. Active switcher boxes (with their resultant change in impedance from high to low) cause an amp's crunch/distorted tone to become fuzzy. Lehle switchers maintain that unique interaction between guitar and amp, as if there is only a high quality cable in between. What’s the difference between Lehle and other switchers? The buttons What catches the eye when looking at a Lehle Switcher? The large mushroom buttons. When the musician presses this button with his foot, it activates a momentary switch located inside the switcher via a metal lever. Since button and momentary switch are not mechanically connected, only the button takes the strength of the foot’s pressure. No pressure is applied to the circuit board. Switching with the highest level of signal integrity The signal sent from the jack of a guitar or bass is so weak that bad cables, cold soldered connection points or cheap contact materials audibly impair the sound. To switch these weak signals without any tone coloration or signal loss requires special materials. All Lehle Switchers route the signal via special gold plated relays. This guarantees clear and reliable switching of sensitive signals. Lehle switchers switch in a passive mode Lehle Switchers route the signal passively (without semiconductors in the signal path). The sound of a guitar or bass is mainly created by the interaction of a weak signal (from the instrument) and a very sensitive amp input. When the signal is enhanced by an active buffer amp (as in more commonly available switcher units), the tone is altered considerably and the signal becomes less sensitive. There are uses for a buffer amp and other active components, but not in the signal path of an amp/channel switcher for purists! What’s the meaning of “True Bypass”? The musician does not want to alter the unique sound developed by the interaction of a prized instrument and amp combination he or she has chosen. For this reason, most “boutique” effects units are “true bypass”. The only problem with this concept is that the actual switches used contain contact materials originally developed for the routing of large currents (i.e. manufacturing machinery). The use of this type of switch becomes audible when (after a certain amount of time) the resonating tone of a guitar suddenly cuts off. Compared to the direct path of instrument to amp, the sound of an instrument routed via a chain of switched off “true bypass” effects is quite dead. Lehle Switchers use only gold plated relays, specifically developed for the switching of very weak signals - REAL “true bypass” switchers. Made in Germany All Lehle products use only brand name components. Cover, bottom and circuit board are firmly bolted with each other using rustproof threaded inserts. The double-sided printed circuit board, made of fiberglass reinforced epoxy resin has plated-through holes. This guarantees stability, durability and the best possible electrical connection of all components. All individual components (housing, circuit board and buttons (including spring and socket) are manufactured, assembled and tested in Germany

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