Markertek - The Future of Broadcast Supply

Call 800-522-2025
M-F 8:30am - 7pm EST

Free Shipping Promo Box
details

FREE SHIPPING No Minimum Order!

SHOP MARKERTEK EVERYDAY for all of your needs. Free shipping on almost every order placed on our website.
Special order & oversized freight intensive items ship at an additional cost. Continental US orders only.
Ask about our new Economy International Shipping Options.

Secure LoginClose X

Returning Markertek Customers

New Markertek Customers





Why Create an Account?

Creating a Markertek account now will save you time on future orders. You'll have full access to your order history and a personalized shopping experience.

 

View As:

Sort By:

Display:

Direct Boxes:

Page:

►►
    ◄◄
     
     
     
    • JENSEN JT-DB-E Direct Box Transformer

      JENSEN JT-DB-E Direct Box Transformer

      When loaded by the 1 kS input impedance typical of mic preamplifiers, this transformer has a 140 kS input impedance, making it ideal for high impedance sources. It can be used with or without an active buffer as a "direct box" for electric guitars or synthesizers. A 30 dB magnetic shield package is standard.

      • Converts unbalanced line levels to balanced mic level output
      • Stops "hum and buzz" problems in musical instrument hook-ups
      • Allows use of long cables without high frequency loss
      • High common-mode r

       

      Read More

      Item #: JT-DB-E

      Availability: Usually ships in 3-10 business days

      Our Price: $69.00

      Add to Wishlist
    • Pro Co AV1B Audio Visual Passive Direct Box

      Pro Co AV1B Audio Visual Passive Direct Box

      The Pro Co TradeTools AV1B Audio-Visual Interface allows the line-level outputs of audio and video playback devices, etc., to be connected to microphone inputs of house or portable P.A. systems for programs in school auditoriums, lecture halls, civic meetings and corporate board rooms. The AV1B provides audio interfacing and isolation with wide response and low distortion.

      Three different types of input connectors-1/4" (6.3mm) T/R/S phone, 2 RCA-type phono, and 3.5mm T/R/S mini jacks - simplify c

         

        Read More

        Item #: PRCO-AV1B

        Availability: In Stock

        Our Price: $104.59

        Add to Wishlist
      • ARX B-DI Blue DI Bluetooth Direct Box

        ARX B-DI Blue DI Bluetooth Direct Box

        The Professional audio interface for Bluetooth enabled SmartPhones, Computers and Tablets

        Smart Phones and Tablets have rapidly become the audio source of choice for Corporate A.V Presentations, Seminars, System Demonstrations and Testing, Musicians, D.Js and many other audio system users.

        Designed by the ARX Engineering team to fill the market niche for a wireless Active Direct Box interface, the new Blue DI connects all of today's (and tomorrow's) SmartPhones, Tablets and similar devices, to the

             

            Read More

            Item #: ARX-BLUE-DI

            Availability: Direct Ship From Manufacturer

            Our Price: $198.00

            Add to Wishlist
          • Radial Engineering JDI Duplex Mk4 Stereo Direct Box

            Radial Engineering JDI Duplex Mk4 Stereo Direct Box

            The Radial JDI Duplex is a full-feature, stereo passive direct box designed to enhance connectivity, reduce noise, and simplify the hectic life of the touring professional, broadcast engineer or AV integrator. It is plug-and-play easy to use while delivering the utmost sonic quality.

            Like the Radial JDI, the Duplex employs two high-performance Jensen audio transformers with the same pristine audio signal path that has made the JDI the industry standard. It features exceptional signal handling wit




                 

                Read More

                Item #: RAD-DUPLEXMK4

                Availability: Usually ships in 3-10 business days

                Our Price: $349.99

                Add to Wishlist
              • Whirlwind pcDI Direct Box with RCA and 1/8in Inputs

                Whirlwind pcDI Direct Box with RCA and 1/8in Inputs

                The Whirlwind pcDI is perfect for interfacing the outputs of CD players, computer sound cards, iPODs® / MP3 players, tape decks, etc. with professional, balanced, low impedance equipment.

                This unit contains two separate DIs - input your signals with one 3.5mm (1/8") mini TRS stereo jack (tip=left +, ring=right +, sleeve=common negative) or two sets of color coded RCA phono type input and through jacks. Output is via corresponding color coded XLRs.

                • Color coded RCA phono in / through jacks
                • Color code

                   

                  Read More

                  Item #: WW-PCDI

                  Availability: In Stock

                  Our Price: $144.00

                  Add to Wishlist
                • Radial - ProDI - Full Range Passive Direct Box

                  Radial - ProDI - Full Range Passive Direct Box

                  The Radial ProDI is a passive direct box that combines exceptional audio performance with solid dependable construction, making it the ideal general duty direct box for stage and studio.

                  The heart of the ProDI is a custom wound Radial transformer. It features an exceptionally high 140k Ohm input impedance to reduce loading while enabling the ProDI to handle extreme signal levels at all frequencies without distortion. This is further improved upon with an internal MuMETAL shield to protect agains

                       

                      2 Types Available

                      Item #: RAD-PRODI

                      Availability: In Stock

                      Our Price: $99.99

                      Add to Wishlist
                    • Radial BT-Pro BlueTooth Wireless Receiver with Balanced Stereo DI Outputs

                      Radial BT-Pro BlueTooth Wireless Receiver with Balanced Stereo DI Outputs

                      The BT-Pro is a Bluetooth direct box designed to capture the wireless transmission from a Bluetooth enabled device and convert the signal to a balanced line for use in a PA or recording system. It employs an innovative T-shaped access cavity behind which is located the antenna. This is protected by a milled insert made from Sintra - a rugged closed-cell PVC - that permits the wireless transmission signal to pass without interference, allowing reception distances to 20 meters (60') under ideal co




                         

                        Read More

                        Item #: RAD-BT-PRO

                        Availability: In Stock

                        Our Price: $229.99

                        Add to Wishlist
                      • Jensen Transformers DB-2RM-WP Wall-Mounted Stereo Direct Box 2-Channel

                        Jensen Transformers DB-2RM-WP Wall-Mounted Stereo Direct Box 2-Channel

                        The DB-2RM-WP is a stereo direct box made to fit in a standard single-gang electrical wall plate. This provides the AV integrator with a simple, yet effective means of connecting an unbalanced analog audio source such as the headphone output from a laptop computer, iPhone, tablet or line level source such as a CD player to a balanced audio system via a permanently mounted interface.

                        The design begins with all-steel construction for maximum durability and a fully shielded back box to help eliminat

                             

                            Read More

                            Item #: JEN-DB2RMWP

                            Availability: In Stock

                            Our Price: $109.99

                            Add to Wishlist
                          • Whirlwind Director Direct Box

                            Whirlwind Director Direct Box

                            The Whirlwind Director DI box is built like a tank and converts line, instruments, or speaker level signals to a clean low impedance mic level. The Director Direct Box offers a ground lift switch, switchable 30dB pad and a switchable low pass roll off filter. Hi-Z bridging input.

                             

                            Read More

                            Item #: RMTB

                            Availability: In Stock

                            Our Price: $67.00

                            Add to Wishlist
                          • Radial J48 Stereo Active DI for Acoustic Guitar & Bass with Extra Headroom and High-Pass Filter

                            Radial J48 Stereo Active DI for Acoustic Guitar & Bass with Extra Headroom and High-Pass Filter

                            The Radial J48 Stereo is a high performance active direct box designed for professional touring and studio recording. It features the same award-winning signal path that has made the single channel J48 the most specified active direct box on tour today. And with users as diverse as Paul McCartney, Tommy Emmanuel and Joe Chiccarelli, you can be sure it will meet the most demanding qualifications.

                            The design begins with a rugged 14 gauge steel construction and a bookend design that protects sensit




                               

                              Read More

                              Item #: RAD-J48S

                              Availability: Usually ships in 3-10 business days

                              Our Price: $299.00

                              Add to Wishlist
                            • Radial PZ-DI Piezo-Optimized Direct Box

                              Radial PZ-DI Piezo-Optimized Direct Box

                              The Radial PZ-DI is a unique direct box that is specifically designed for acoustic and orchestral instruments. Unlike most direct boxes that are limited to a 'one size fits all' design, the PZ-DI lets you properly match the input impedance to the source to optimize the frequency response, dynamics and feel so that no matter what type of pickup you employ, you will enjoy smoother, more musically pleasing results.

                              The design begins with a 3-position load adjustment switch: The 1 meg-ohm position d

                                   

                                  Read More

                                  Item #: RAD-PZ-DI

                                  Availability: Usually ships in 3-10 business days

                                  Our Price: $229.99

                                  Add to Wishlist
                                • Whirlwind Standard Direct Box

                                  Whirlwind Standard Direct Box

                                  The IMP-2 is an economical alternative perfect for all of your direct box needs. Built rugged on the inside and outside, this is the world famous DI found in pro systems everywhere. The IMP 2 converts a line or instrument level unbalanced signal to a low impedance mic level balanced signal. The IMP-2 includes a ground lift switch and 1/4"/XLR inputs/outputs.

                                  • 1/4" parallel wired in/out jacks
                                  • Ground Lift switch to help isolate hum and buzz
                                  • Uses Whirlwind's TRHL transformer
                                  • Impedance Ratio (input to ou

                                   

                                  Read More

                                  Item #: IMP-2

                                  Availability: In Stock

                                  Our Price: $53.00

                                  Add to Wishlist
                                • Whirlwind PCDIHW Direct Box Dual with RCA 1/4 Inch Inputs 1/8 Inch Hardwired Input Tail 30 Inch

                                  Whirlwind PCDIHW Direct Box Dual with RCA 1/4 Inch Inputs 1/8 Inch Hardwired Input Tail 30 Inch

                                  The Whirlwind pcDIhwb is a PCDI with a hard wired tail terminated with a stereo 3.5mm plug, perfect for interfacing the outputs of CD players, computer sound cards, iPODs / MP3 players, tape decks, etc. with professional, balanced, low impedance equipment (with no chance of losing the cable).

                                  This unit contains two separate DIs - input your signals with one hard wired, 30 inch 3.5mm (1/8") mini TRS stereo plug, two sets of color coded RCA phono type input and through jacks or 1/4" TS input jacks.

                                       

                                      Read More

                                      Item #: WW-PCDI-HW

                                      Availability: In Stock

                                      Our Price: $156.00

                                      Add to Wishlist
                                    • WHIRLWIND Direct 2 Direct Box

                                      WHIRLWIND Direct 2 Direct Box

                                      1/4" parallel wired in/out jacks / Ground Lift switch to help eliminate hum and buzz / -20dB pad switch for connection to input signals

                                      The DIRECT2 combines features found on two of Whirlwind's DIRECTOR direct boxes into one unit. Perfect for converting unbalanced signals from Stereo keyboards, acoustic Guitar preamps, CD and tape players, Computer Sound cards, etc. The Input and Output grounds of each section are isolated from each other. This allows the DIRECT2 to be used as if it were two comp



                                       

                                      Read More

                                      Item #: DIRECT-2

                                      Availability: Usually ships in 3-10 business days

                                      Our Price: $125.00

                                      Add to Wishlist
                                    • Behringer DI600P High-Performance Passive Direct Injection Box

                                      Behringer DI600P High-Performance Passive Direct Injection Box

                                      The ULTRA-DI DI600P is a passive DI (Direct Injection) box for connecting a guitar, bass or keyboard directly to your mixer. With the DI600P as your go-between, impedance-matching problems become a thing of the past, and long cable runs will not sacrifice all of your precious tone.

                                      • Connect your guitar or bass directly to your mixer without losing tone due to impedance mismatches, long cables and cycle hum
                                      • Converts any unbalanced line-level signal to balanced mic-level output
                                      • Provides impedance and

                                       

                                      Read More

                                      Item #: BEH-DI600P

                                      Availability: Usually ships in 3-10 business days

                                      Our Price: $29.99

                                      Add to Wishlist
                                    • ART PDB4 Four Channel Passive Direct Box - 1RU

                                      ART PDB4 Four Channel Passive Direct Box - 1RU

                                      The ART PDB4 Four Channel Passive Direct Box is a deceptively simple, yet surprisingly useful addition to any serious collection of
                                      audio equipment. The PDB4 is a four channel passive direct box that features four quality, fully transformer isolated, direct boxes in a 1U 19-inch rack mount chassis.

                                      Inputs and outputs of each of the four channels are isolated to maximize channel separation. Transformer isolation on each output helps to eliminate system ground loops.

                                      It is a rock solid, roadworthy in

                                         

                                        Read More

                                        Item #: ART-PDB4

                                        Availability: Direct Ship From Manufacturer

                                        Our Price: $79.00

                                        Add to Wishlist
                                      • Rolls DB24 Stereo Direct Interface

                                        Rolls DB24 Stereo Direct Interface

                                        Introducing the new DB24 Stereo Direct Interface. This unit is a two channel isolation device designed to connect high impedance devices to low impedance. The unit is completely passive, and utilizes Rolls proprietary audio transformers for superior sound. A heavy duty steel chassis was chosen to provide maximum reliability when used in demanding live sound reinforcement applications.

                                        A variety of inputs are provided including stereo and mono 1/4", stereo RCA, and stereo 1/8" (3.5mm).
                                        The DB24 is

                                           

                                          Read More

                                          Item #: DB24

                                          Availability: In Stock

                                          Our Price: $69.00

                                          Add to Wishlist
                                        • Pro Co CB-1 Passive Direct Box with Ground Lift Switch

                                          Pro Co CB-1 Passive Direct Box with Ground Lift Switch

                                          For connection of unbalanced musical instruments and line-level sources to Low-Z balanced microphone input for PA or recording. Not recommended for speaker level use. 1/4" (6.35mm) input (with parallel 1/4" (6.35mm) output); switch for ground lift; male XLR type balanced output. Uses CBT-1 transformer (20K/150 Ohms).

                                           

                                          Read More

                                          Item #: CB-1

                                          Availability: Direct Ship From Manufacturer

                                          Our Price: $55.59

                                          Add to Wishlist
                                        • Audio-Technica Unimix 2 To 1 Mic Combiner w/Balanced Control

                                          Audio-Technica Unimix 2 To 1 Mic Combiner w/Balanced Control

                                          The Audio Technica AT8681 UniMix is part of the UniTools group of phantom powered in-line microphone accessories. It combines the output from two microphones into one channel. A continuously variable balance control allows the two input sources to be mixed. Applications for the UniMix include expanding the input capacity of mixers, combining two microphones to send signal down a single cable where it is difficult to run a second cable, and combining microphones on similar instruments to minimize











                                             

                                            Read More

                                            Item #: AT8681

                                            Availability: Usually ships in 3-10 business days

                                            Our Price: $52.99

                                            Add to Wishlist
                                          • Rolls DB14b AV Presenter Stereo Patch Box

                                            Rolls DB14b AV Presenter Stereo Patch Box

                                            The DB14b is a special purpose direct box for applications where a stereo source signal can be separated, and individual volume controls used for each track such as an AV presentation from a laptop computer, or a rehearsing choir to a music track. It has stereo RCA and 1/8" inputs, 2 volume controls, RCA and XLR outputs, and uses no power.

                                            • Splits Stereo RCA and stereo 1/8" (3.5mm) signals
                                            • Individual Right and Left level controls
                                            • Transformer balanced XLR mono output.
                                            • Max Input Level: +20 dB
                                            • Max Output

                                             

                                            Read More

                                            Item #: DB14B

                                            Availability: In Stock

                                            Our Price: $45.00

                                            Add to Wishlist
                                          • Rapco DB-1 Passive Direct Box

                                            Rapco DB-1 Passive Direct Box

                                            The DB-1's simple design offers reliable input jacks as well as a loop-through 1/4 inch jack. Plug any instrument level signal (and some line level) into the box, interface with a standard XLR mic cable into the Lo-Z output, and you're ready to plug the output "directly" into a mixing console. A ground lift switch is provided for buzz-free operation in almost any environment.

                                            • Transforms Hi-Z 1/4 inch input to balanced Lo-Z XLR output
                                              Heavy duty steel box
                                              Superior quality connectors and transformer
                                              R


                                             

                                            Read More

                                            Item #: RAPCO-DB-1

                                            Availability: In Stock

                                            Our Price: $29.99

                                            Add to Wishlist
                                          • Switchcraft SC800 Instrument Direct Box with Custom Transformer

                                            Switchcraft SC800 Instrument Direct Box with Custom Transformer

                                            The SC800 Instrument Direct Box from Switchcraft® converts the outputs of high impedance line level audio devices and musical instruments to low impedance, balanced and isolated mic level signals that can be connected to audio console's, mic pre's, effects processors, and other equipment with 3-Pin XLR inputs.

                                            The SC800 was developed with one goal in mind... to provide audio engineers and musicians with the highest quality passive direct box available today.

                                            Built by hand in Chicago, USA.

                                            • All measu







                                             

                                            Read More

                                            Item #: SW-SC800CT

                                            Availability: Usually ships in 3-10 business days

                                            Our Price: $106.15

                                            Add to Wishlist
                                          • Whirlwind PodDI Single Output Summing Direct Box

                                            Whirlwind PodDI Single Output Summing Direct Box

                                            The podDI is a single output summing direct box. Use it to connect CD and MP3 players, computer sound card outputs, DJ mixers, etc. to professional equipment with balanced inputs such as a mixing console. Accepts stereo inputs and sums them into a single mono output.

                                            A variable attenuator on each input allows level matching between left and right inputs. This makes the podDI a passive mixer in split track audio applications, balancing the voice track and the music track levels in the summed mono

                                             

                                            Read More

                                            Item #: WW-PODDI

                                            Availability: In Stock

                                            Our Price: $78.00

                                            Add to Wishlist
                                          • Jensen Transformers Concert-2 Two Channel Direct Box

                                            Jensen Transformers Concert-2 Two Channel Direct Box

                                            The Iso-Max Concert-2 is a stereo direct box designed to drive unbalanced instrument signals distances to 100 meters (300') or more without high frequency loss or introducing noise into the signal path.

                                            The design begins with a rugged extruded aluminum enclosure and steel slide-in inner tray with recessed zones at each end to protect the switches and connectors. At one end, left and right ¬" instrument inputs and thru-puts are wired in parallel with a handy 3.5mm mini TRS for laptops and tablets.

                                                 

                                                Read More

                                                Item #: JEN-CONCERT-2

                                                Availability: Usually ships in 3-10 business days

                                                Our Price: $299.99

                                                Add to Wishlist
                                              • Radial SB-2 Compact Passive DI For Bass & Keyboards W/ Stereo To Mono Mix

                                                Radial SB-2 Compact Passive DI For Bass & Keyboards W/ Stereo To Mono Mix

                                                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.

                                                The compact design begins with a 1/4" input and thru-put to feed the on-stage amp. This connects to the custom made Eclipse ET-DB3 transformer which performs the impedance matching and balances the signal. When using extra high output instruments, a -15dB pad can be ins

                                                     

                                                    Read More

                                                    Item #: RAD-SB-2

                                                    Availability: Usually ships in 3-10 business days

                                                    Our Price: $69.99

                                                    Add to Wishlist
                                                   

                                                  Page:

                                                  ►►
                                                    ◄◄
                                                     
                                                     
                                                     
                                                     

                                                    Direct Boxes

                                                    Direct Boxes from Markertek are available in single & multichannel configurations and are engineered to precision specifications. Match balanced and unbalanced audio signals (match computers, instruments, film projectors and phonographs to professional audio components), mic to line level and vice-versa. We stock direct boxes from leading manufacturers like Whirlwind, Radial Engineering, ARX America and ART.

                                                     

                                                     
                                                    Continue Shopping View Cart