Glensound Signature U2B4 - Twin Stereo Unbalanced to Balanced Converter
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Description
The Signature U2B4 is a broadcast specification twin stereo unbalanced to balanced analogue audio interface that is equally suitable for professional & home studio use.
Its primary job is to interface domestic type audio outputs (unbalanced) to the balanced audio inputs on broadcast and professional audio equipment.
As well as providing a balanced interface the U2B4 also provides variable gain/ loss to allow the lower level audio outputs produced by domestic equipment to be raised to meet the higher level broadcast and pro audio standard.
The two stereo audio inputs (which can work as quad monos) are on gold plated RCA phono connectors. These inputs are electronically isolated with RF filters to prevent extraneous signals, and fed via multi-turn preset gain controls on the rear panel to two pairs of electronically balanced and isolated outputs on Neutrik XLRs.
The rear panel gain controls are multi-turn presets to allow accurate gain setting and are also recessed to prevent accidental movement.
Power is provided by an internal switch mode power supply, with a wide input range. There is also an input for external 12v DC power. The 12v DC input can be connected to the optional Signature PS1external DC Master Power Station, for situations where a redundant power supply is desirable.
A bright front panel LED indicates that the unit is operational.
| AUDIO | |
| Frequency Response @ Line up | <+/-0.1dB 40Hz to 20kHz |
| Gain Range | -15dB to +15dB on each output |
| Line Up Level (with 0dB Gain) | -12dBu on unbalanced input = 0dBu on balanced output |
| Maximum Input Level | +28dBu |
| Maximum Output Level | +24dBu |
| Input Impedance | >22 kOhms |
| Output Impedance | Distortion ref +dBu output 0.04% THD @ 100Hz 0.01% THD @ 1kHz 0.01% THD @ 10kHz |
| Noise | -98dB @ lineup unweighted RMS 22Hz to 22kHz ref +8dBu output |
| Interchannel Crosstalk | >-90dB 1 to 15kHz |
| Input Type | Electronically isolated on gold plated RCA phono sockets |
| Output Type | Electronically balanced on Neutrik XLRs |
| POWER | |
| Mains Input | Filtered IEC, 100 - 240VAC (+/-10%) 47 - 63Hz |
| AC Consumption | 1.7 Watts |
| DC Input | 4 Pin Neutrik XLR plug +/-12V |
| Internal Fuse | 20mm 1A Anti surge |
| PHYSICAL | |
| Size | 338 x 123 x 44mm (LxDxH) no rack ears 482mm 19" (1RU) with rack ears |
| Weight | 1.00Kg |
| Mechanics | All aluminium construction, anodised and laser etched |
| Shipping Carton | Rugged export quality cardboard carton 610 x 420 x 130mm |
| Shipping Weight | 2.3Kg |
| INCLUDED ITEMS | |
| Mains Lead | 2 metre long (UK / Europe only) |
| Rack Bolts | 4 off Pozi head M6 |
| Feet | 4 off rubber stick on feet |
| Handbook | Full A4 handbook available to download and linked by QR code on device |
| Quick Start Guide | Printed A4 double sided quick start guide |
The Signature U2B4 is a broadcast specification twin stereo unbalanced to balanced analogue audio interface that is equally suitable for professional & home studio use.
Its primary job is to interface domestic type audio outputs (unbalanced) to the balanced audio inputs on broadcast and professional audio equipment.
As well as providing a balanced interface the U2B4 also provides variable gain/ loss to allow the lower level audio outputs produced by domestic equipment to be raised to meet the higher level broadcast and pro audio standard.
The two stereo audio inputs (which can work as quad monos) are on gold plated RCA phono connectors. These inputs are electronically isolated with RF filters to prevent extraneous signals, and fed via multi-turn preset gain controls on the rear panel to two pairs of electronically balanced and isolated outputs on Neutrik XLRs.
The rear panel gain controls are multi-turn presets to allow accurate gain setting and are also recessed to prevent accidental movement.
Power is provided by an internal switch mode power supply, with a wide input range. There is also an input for external 12v DC power. The 12v DC input can be connected to the optional Signature PS1external DC Master Power Station, for situations where a redundant power supply is desirable.
A bright front panel LED indicates that the unit is operational.
| AUDIO | |
| Frequency Response @ Line up | <+/-0.1dB 40Hz to 20kHz |
| Gain Range | -15dB to +15dB on each output |
| Line Up Level (with 0dB Gain) | -12dBu on unbalanced input = 0dBu on balanced output |
| Maximum Input Level | +28dBu |
| Maximum Output Level | +24dBu |
| Input Impedance | >22 kOhms |
| Output Impedance | Distortion ref +dBu output 0.04% THD @ 100Hz 0.01% THD @ 1kHz 0.01% THD @ 10kHz |
| Noise | -98dB @ lineup unweighted RMS 22Hz to 22kHz ref +8dBu output |
| Interchannel Crosstalk | >-90dB 1 to 15kHz |
| Input Type | Electronically isolated on gold plated RCA phono sockets |
| Output Type | Electronically balanced on Neutrik XLRs |
| POWER | |
| Mains Input | Filtered IEC, 100 - 240VAC (+/-10%) 47 - 63Hz |
| AC Consumption | 1.7 Watts |
| DC Input | 4 Pin Neutrik XLR plug +/-12V |
| Internal Fuse | 20mm 1A Anti surge |
| PHYSICAL | |
| Size | 338 x 123 x 44mm (LxDxH) no rack ears 482mm 19" (1RU) with rack ears |
| Weight | 1.00Kg |
| Mechanics | All aluminium construction, anodised and laser etched |
| Shipping Carton | Rugged export quality cardboard carton 610 x 420 x 130mm |
| Shipping Weight | 2.3Kg |
| INCLUDED ITEMS | |
| Mains Lead | 2 metre long (UK / Europe only) |
| Rack Bolts | 4 off Pozi head M6 |
| Feet | 4 off rubber stick on feet |
| Handbook | Full A4 handbook available to download and linked by QR code on device |
| Quick Start Guide | Printed A4 double sided quick start guide |
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Your home for all things pro audio—backed by expertise and experience. Connect with us today.
