![]() ![]() Direct injection can also be used to intentionally overdrive a preamp, creating a unique type of clipping distortion. Sometimes, a DI is used solely for the tonal properties of its transformer, coloring a clean signal. They’re also ideal for long cable runs that would pick up a lot of noise if a standard guitar cable were used. The most common use of a DI is to record a clean, unaffected guitar or bass signal, often in tandem with an amplified signal. They often include controls to fine-tune output level and impedance. Reamp boxes are essentially reverse DIs meant to send recorded signals back to amplifiers for re-recording. They sometimes include a feature that can place the output before or after the preamp and EQ stages, depending on the situation. Integrated DIs are built into amplifiers and effect pedals as a convenience, like the line output common on bass amps. They can be simple stereo DIs for keyboards or can permit switching between multiple guitars going to a single output. Multichannel DIs have multiple inputs, outputs, or both. ![]() Active DIs sometimes incorporate onboard equalizers. As such, they can only attenuate signals, not amplify them.Īctive DIs have an integrated preamp, which requires power but allows a higher-level output, eliminating the need to amplify the signal after the DI. Passive DIs use only passive components and do not require power to operate. Typical Features of a DIĭI boxes often include several switches for utility features that can be engaged in different scenarios: Because of the minimal components involved, the transformer dictates much of the device’s sound (and price). Since there is no direct contact between the wires like in a traditional circuit, the input and output are completely isolated from each other, eliminating ground loops, which can create noise. A reamp box typically gives you (1) a transformer (obv, the more you spend, the better youd hope this transformer is, but a 20 transformer is probably overkill.) - which should help cancel out noise pickup on a long run of (balanced) cable from your interface to the amp. Connect the 1/4' ProRMP output to your instrument amp. The high-impedance input signal is passed from one coil of wire to the other via electromagnetic induction, and the different winding of the two coils is what changes the electrical impedance. Plug a standard balanced cable from your recorder or mixer output to the ProRMPs XLR input. Inside the transformer, two coils of wire are wrapped around a magnetic metal core. Guitar volume pots are usually in the 100k+ range. Its meant to emulate the output z of a passive pickup + tone and volume pots. A DI allows the user to insert an instrument signal directly into a preamp, mixer, or recorder at the proper impedance for a cleaner sound and lower noise.Īt the most basic level, a DI box consists of an unbalanced ¼” input, an internal transformer, and a balanced XLR output. yes no, it shouldnt not go to ground theres no backwards with a 1:1 transformer Just a bit of unsolicited feedback, that impedance pot is too small value to do anything. A Direct Injection or Direct Input (DI) unit converts an unbalanced, high-impedance signal (like a guitar or keyboard’s output) into a balanced, low-impedance signal like that of a microphone. ![]()
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