Top 10 2 Channel Laptop Direct Box

The Radial Stage Bug SB-5 is a compact stereo direct box designed to accommodate laptop computers, tablets and other consumer audio products when amplifying the signal through a PA system. The passive design begins with an integrated input cable that connects from the headphone out via a flexible 1.5m (5′) cable that is terminated with a standard 3.5mm (1/8″) stereo connector. The cable is secured via a clamping strain relief and is wrapped using the sidewinder cleat for easy storage. This of course eliminates having to locate a cable making it easier to deploy in fast paced work environments. Inside, the unbalanced stereo signal is sent to a pair of custom wound transformers which balances the signals for long cable runs – upwards to 100 meters (300′), without noise. Transformers further benefit by isolating the computer from the PA system to help eliminate hum and buzz caused by ground loops. This is augmented with a ground lift switch to further reduce ground contamination. A choice of output connectors is available including a stereo set of 1/4″ TRS jacks for full stereo operation or an XLR out that automatically sums the left-right program material to mono. This can save valuable channels on the PA system and makes setup easier in situations where full stereo reproduction is not required. A -15dB input pad may be engaged to reduce sensitivity and enable extra high output sources to be connected without distortion. These features combine to make the SB-5 the perfect tool-kit DI for the AV technician, media manager or traveling musician equipped with a computer.

A high-quality, passive direct box that uses 2 proprietary custom-made transformers, one for each channel, for both impedance conversion and isolation. Linear from 20Hz-18kHz, with low distortion and virtually zero phase distortion makes it perfect for live or studio performances. Because of the transformer isolation, problems such as hum and buzz caused by ground loops are eliminated, making it very easy and hassle-free to use. Features include 1/4″ thru/input, -15dB pad, and ground lift protected from damage by a protective front panel. Heavy-duty construction, baked enamel finish, and 600ohm balanced output. 3″ x 5″.. A high-quality, passive direct box that uses 2 proprietary custom-made transformers, one for each channel, for both impedance conversion and isolation. Linear from 20Hz-18kHz, with low distortion and virtually zero phase distortion makes it perfect for live or studio performances. Because of the transformer isolation, problems such as hum and buzz caused by ground loops are eliminated, making it very easy and hassle-free to use. Features include 1/4″ thru/input, -15dB pad, and ground lift protected from damage by a protective front panel. Heavy-duty construction, baked enamel finish, and 600ohm balanced output. 3″ x 5″.

Converts a line or instrument level unbalanced signal to a low impedance mic level balanced signal. The IMP is an in-line transformer that converts a line or instrument level unbalanced signal to a low impedance mic level balanced signal. While the Imp 2 (shown) is the ideal direct box for anyone requiring professional quality and durability in an economical package.

The Radial StageBug SB-2 Passive is a high-performance direct box made for players who are on the move! Made to fit inside of a guitar case, the SB-2 is ultra compact yet is feature-packed to ensure great performance on any stage.

Great for stereo sources like keyboards and synthesizers, the MDB-2P is an essential tool for electronic musicians, live sound venues, and recording studios. The MDB-2P stereo passive DI features dual 1/4” high-impedance inputs with thru outputs and -15dB pads, and dual low-impedance XLR outputs with ground lift.

To eliminate the need for various adaptors, both units are equipped with a ‘Swiss Army’ array of connectivity options including 1/4″ inputs for instruments, RCA and 3.5mm (1/8″) connectors for CD players, iPods, video decks and computers. The ProAV1 also features a female XLR input for interfacing equipment with +4dB professional signal levels. The front panel connectors can also be used as thru-puts to allow multiple patch points. Custom wound Eclipse ET-DB2 transformers are able to withstand exceptionally hot signal levels while maintaining linearity from 20Hz to 20kHz. The resulting smooth Bessel curve is warm and natural, making them particularly adept at handling digital sources that can sound harsh. Transformer isolation further benefits by eliminating hum and buzz caused by ground loops or DC offset problems.

The Whirlwind pcDI is a dual channel direct box with RCA phono connectors designed to interface unbalanced, stereo line sources with professional, balanced, low impedance equipment. The unit contains two separate DIs and signals can be inputted through either through a single 3.5mm (1/8″) mini TRS stereo jack or two sets of color coded RCA phono type input that also feature Thru RCA connectors. Output is via corresponding color coded XLRs. The pcDI features a ground lift switch to help eliminate hum and a 20dB pad switch in each channel for connecting to “hot” signals. Perfect for interfacing with the outputs of CD players, computer sound cards, tape decks, etc.

Trim-Two Passive DI for AV with Level Control. The Radial Trim-Two is a simple yet effective passive direct box that provides the user with the ability to quickly adjust the volume using a variable input trim control. The magic lies in the custom-made Eclipse transformer that produces less than 0.05% distortion with a +10dB source. This makes the Trim-Two a great choice for interfacing laptops and tablets with PA systems for AV presentations or live events. The design begins with a choice of inputs including dual ¼” jacks, left and right RCAs and a stereo 3.5mm input. These are wired in parallel to allow the signal to be split off to feed an alternate signal path such as monitors. Inside, two great sounding Eclipse transformers do the work of isolating and balancing the signal. These ‘passive engines’ deliver a linear frequency response from 20Hz to 18kHz and are capable of handling up to +15dB signal levels thus providing typical -10dB consumer-level devices with plenty of headroom. An easy access front panel stereo level control makes adjusting the volume a snap. A handy stereo-to-mono switch makes it easy to reduce the output channel count or send the same balanced signal to two destinations at once. Transformers provide galvanic isolation between the source and the destination and are extremely effective at eliminating hum and buzz caused by ground loops. This is augmented with a ground lift switch at the XLR outputs. One merely connects the source to the Trim-Two and then the male XLR outputs to the PA system. As the Trim-Two is completely passive, no power is required. Made in Canada from heavy duty 14 gauge steel, the Trim-Two features Radial’s unique book-end design that creates protective zones around the connectors and controls. Inside, the unique I-beam frame protects the sensitive inner workings from potential damage that could torque the PC board and cause solder pointes to prematurely go cold. The steel casing also provides shielding against externa…

JDI Passive Direct Box

DB-01 PASSIVE DIRECT BOX. Convert your HI-Z 1/4″ signal to LO-Z XLR. You do not need a battery or phantom power for this direct box. Great for Keyboardists, Acoustic & Electric Guitarists, Bassists, and other instrumentalists needing to plug into the snake on stage. Includes ground lift switch and 2 levels of padding. 1/4″ input XLR and 1/4″ output Ground Lift Button Pad Switch (-20dB and -40dB) Heavy Duty Metal Construction Rubber Feet