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The Behringer Ultra-DI Pro DI4000 4-channel Active DI Box gives you four top-shelf DI channels in one rack space. Direct Injection (DI) boxes, of course, let you plug guitars and basses, keyboards, etc. directly into your board. For impedance matching and signal integrity, they\'re indispensable. The DI4000 is a DI on steroids. With its active circuitry, it sports buffered inputs that won\'t pollute your signal (as passive DIs can). Boasting a bevy of boost/attenuation, groundlift, and connectivity options, Behringer\'s Ultra-DI Pro DI4000 is your audio Swiss Army Knife.
Behringer Ultra-DI Pro DI4000 4-channel Active DI Box Features at a Glance:
Professional multi-purpose 4-channel direct injection box for stage and studio applications
Provides impedance and signal matching for direct connection of instruments to mixers and amplifiers
Fitted with Behringer\'s OT-1 transformers for ruler-flat frequency response
Allows direct connection to speaker outputs with up to 3,000W
+20dB gain switch for preamplification of low-level signals
Switchable input attenuation allows input levels of up to +40dB
Phase Reverse switch allows you to instantly correct phase problems
Switchable high-cut filter (8kHz) for guitar applications
Ground Lift switch eliminates typical ground loop problems
Accurate 8-segment LED level meter for optimum performance
TRS and gold-plated XLR connectors
Illuminated switches enable operation in dark stage environments
High-quality components and exceptionally rugged construction ensure long life
Behringer DI4000 V2 Ultra DI Pro - active 4-channel professional DI box; +20 dB gain switch for pre-amplification of low-level signals; Phase Reverse switch; witchable High-cut filter (8 kHz) for guitar applications; Ground Lift switch; 4x XLR and TRS inputs; 4x TRS Link-Outpuut; 4x XLR Outbut; Impedance 240 Ohm; Max. Outputlevel +20dBu; frequency range 23 Hz - 69 kHz; debth 136mm, 19" 1U, weight 2,1 kg
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Passive DI box especially designed for guitars.
The PDI09 can be connected between an effect device or amplifier and the mixing console. The PDI09 is not suitable for direct connection to a guitar. Integrated filter circuits simulate the authentic "speaker" sound. Tone can be varied between "Mellow“, "Normal“, or "Bright“.
Technical specifications:
- Input: 6.3 mm jack with parallel "THRU" socket
- Output: male XLR transformer balanced
- Attenuator: (Level switch) 0 dB for line signals, -15 dB for small amps up to 10 w, 30 dB for large amps up to 200 w
- No battery necessary
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DOD AC 275 Active Direct Box with Switchable Ground Lift and Attenuator-2nd Hand- The AC 275 is an active, phantom powered direct box. Unlike a passive DI where the frequency response of the signal can be altered depending on the connected impedance, an active DI buffers the input signal with an amplifier. This assures that the sound source will reach the mixer balanced and noise-free. Housed in a cast alloy chassis, the AC 275 supplies two, high impedance, unbalanced 1/4" jacks and one low impedance balanced XLR jack. It operates with battery or phantom power.
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2-channel DI box/splitter, passive Converts 2 separate unbalanced line inputs (e.g. instruments) into 2 balanced XLR outputs for connecting a mixer Switchable to split mode (input 1 routes the signal to both outputs) Switchable input attenuation: 0 dB, -20 dB, -40 dB Ground-lift switch eliminates ground loop problems 2 signal inputs via XLR/jack combo connectors 2 low-impedance XLR outputs Modern convex housing design Full rubber housing corners for safe operation Cables can be routed under the housing |
Ενεργό DI box με ground lift, αναστροφή φάσης, έξοδους XLR και καρφί 1/4'' (thru), pad 3 θέσεων στην είσοδο για σήματα επιπέδου instrument/line/speaker
- Premium Performance
- Rugged Design
- Stackable Chassis with Durable Rubber Foot
- Gold-plated Neutrik® XLR Connector
- Premium Chrome Toggle Switches
- Hi-Z 1/4" Input Jack
- Parallel 1/4" Thru Jack
- Transformer Isolated
- Premium Shielded Custom dbx Transformer
- Balanced XLR Lo-Z Output
- 3-Way 0/20/40 dB Pad Switch
- Flat/High-Cut Filter Switch
- Output Polarity Invert Switch
- Ground Lift Switch
- 4 Year Warranty!
Additional dB12 Features - Phantom Powered
- Green LED Phantom Power Indicator
- +48V Phantom Operation
- Low-Noise Active Circuitr
dB12 Specifications INPUT SECTION
Input: 1 instrument/line/speaker level
Connector: 1/4" jack
Type: Unbalanced, RF filtered
Impedance: 150k Ohm typical
Max Input Level: +20dBu (0dB pad)
+40dBu (20dB pad)
+60dBu (40dB pad)
OUTPUT SECTION
Thru Output: 1 parallel connection from input jack
Connector: 1/4" jack
Type: Unbalanced, RF filtered
Main Output: 1 line level
Connector: XLR male jack
Type: Balanced
Impedance: 150 Ohm typical
Max Output Level: 0dBu
PERFORMANCE
Transformer: Custom dbx mu-metal-shielded
Frequency Response: 20Hz to 20kHz, +/-2.5dB
Noise: |
Tube-buffered DI-Box DI-1000
The Tube-Buffered DI-Box DI-1000 allows the extraction of all the musical details of
musical interfaces without degrading the sound. This can only be achieved by
providing a very high input impedance to avoid any loading of instrument pickups.This
design approach allows seemingly infinite headroom to preserve the real dynamic range
of the interfaced instruments.A vacuum tube enables all these goals to be achieved
without any compromises in sound quality.The sonic difference between a standard
DI-Box and the Tube-Buffered DI-Box is comparable to the musical resolution difference
between a standard microphone and a studio microphone.One of the best transformers,
the very transparent sounding JENSEN JT-DB-E, was chosen providing complete ground
isolation. The parameters of this transformer, like frequency response, phase response,
group delay and geadroom capabilities, play a vital part in the performance of this DI-Box.
Technical Specifications
Input
The signal of the instrument is directly fed to the tube circuit with > 20 MOhms input
impedance to prevent any signal degradation, inevitable in traditional designs.
Buffered Output“
The second stage of the vacuum tube is used to buffer the signal and lower the output
impedance to < 8 kOhms. This unity gain output allows for cable runs of 10 meters
without loosing high frequency information.
Boost circuit
The boost circuit increases the signal send to the output transformer by 15 dB. This may
be useful for instruments with extremely low output, but decreases headroom capability
to 6 Volt rms. Under these circumstances the signal may be clipped, concerning the output
transformer?s signal, which gives you 2nd harmonic tube-like distortion. This distortion
normally does not occur - but is sometimes desirable, being the reason for this special feature.
Unity circuit
The unity circuit feeds a low distortion unity gain signal to the JENSEN output transformer.
This gives the best possible sound quality.
Ground-lift“-Switch
This front panel mounted switch allows complete ground and electrical isolation between the
direct injection box and the console or recording device.
Mechanical Specifications
Cabinet 2 mm stainless steel
Front- and rear-panel 1,5 mm stainless steel lasercut and photo-chemically etched
Dimensions 185 x 100 x 40 mm
Vibration insulation 4 high-compliance rubber-elements
Operating Voltage
220/110 V AC, selectable via rear panel mounted switch. The fuse is easily
accessible from the rear panel. IEC mains connector with optional fixture.
Construction details
Double sided glass fibre contacted PCB with 70 mm copper plating. 1% metal film resistors
and the finest polypropylene capacitors are used in the signal path. MIL type Switchcraft jacks
and high performance switches ensure flawless operation. The power supply is optimised via
measurement quality toroid transformer and a low impedance design to ensure the lowest
possible noise. Through a double sided PCB all parts are roadworthy secured. A waterclear
blue LED perfects the aesthetics of the DI box.
Technical Data
Input impedance > 20 MOhm
Output impedance180 Ohm at 1 kHz
Frequncy response 20 Hz - 20 kHz (-0,1 dB)
5 Hz - 120 kHz (-3 dB)
THD at 0 dBv 0,06% at 20 Hz
0,04% at 1 kHz
0,035% at 20 kHz
Signal to Noise Ratio 86 dB
Tube ECC 83/7025 A - military E 83 CC optional
Output transformer JENSEN JT-DB-E
Polarity Pin 2 Hot , AES/IEC -Standard
Max. Input voltage > 30 V peak |
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