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ATI Audio Inc UB-400B - 4-Channel Uni-directional Level Matching Device

B&H # ATUB400B Mfr # UB400B
No Longer Available

The ATI Audio UB-400B is a uni-directional -10dBu to +4dBu level matching device equipped with 4 channels of I/O on XLR and RCA phono connectors.

The UB-400B allows for the multi-channel integration of unbalanced consumer audio signals with professional grade mixing consoles and other balanced gear, for both recording and playback purposes, eliminating RF pickup, hum high frequency roll-off and other familiar aberrations associated with consumer and pro co-integration.

The UB-400B is a 1/3-space 1RU rack unit, and may also be desktop or console mounted, offering an ultra-clean user interface consisting of 4 front-panel trim controls and an activity LED for simplified, intuitive operation.

Uni-directional 4-channel level matching device for professional and consumer recording and playback co-integration
Converts 4 unbalanced IHF audio signals into 4 balanced outputs suitable for line input feeds to multi-channel pro grade mixers, tape machines and DAT's
Eliminates hum, distortion, ground-coupled crosstalk and RF loops associated with low-level consumer IHF outputs and studio/broadcast professional 600 Ohm balanced systems
1/3-space 1RU rackmount or console/desktop mounting
Ultra-quiet, high-headroom operation
Clean user interface with front-panel trim controls
Loop-thru DC connectors on rear panel for shared power daisy-chain operation from single power supply
Frequency Response 20 Hz - 20 kHz, +2.5dB (per stereo channel)
Noise Level -90dBu(max. output bal.)
-80dBu(max. output unbal.)
Maximum Input Level Balanced: +22dBm
Unbalanced: +8dBm in
Maximum Output Level +8dBu(2.0V)
+22dBu(2.0V)
Input Connectors 2 x 3-pin XLR Female, Balanced
2 x RCA Phono, Unbalanced
Output Connectors 2 x 3-pin XLR Male, Balanced
2 x RCA Phono, Unbalanced
Input Impedance Balanced: 20 kOhm, Bridging
Unbalanced: 10 kOhm
Output Impedance Balanced: 40 Ohms max.
Unbalanced: 1500 Ohms max.
Dimensions 1.5 x 5.5 x 5.75" (38.1 x 139.7 x 146mm)
Weight 1.5 lb (0.68 kg)
ATI Audio Inc UB-400B - 4-Channel Uni-directional Level Matching Device
  • 1 Year Warranty
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