{"title":"Microphone Amplifiers","description":null,"products":[{"product_id":"sonifex-rb-ma2-dual-microphone-amplifier","title":"Sonifex RB-MA2 Dual Microphone Amplifier","description":"\u003ch1\u003e\n\u003cspan style=\"color: #00247d;\"\u003e\u003cstrong\u003eSonifex Dual Microphone Amplifier\u003c\/strong\u003e\u003c\/span\u003e - \u003cspan style=\"color: #cf142b;\"\u003eRB-MA2\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp\u003eAll connections and controls are on the rear panel. The microphone inputs are XLR-3 type and are electronically balanced. The input gain for each input can be adjusted individually by a recessed pre-set potentiometer which allows for the use of both dynamic and powered microphones.\u003cbr\u003e\u003cbr\u003eThe XLR-3 line outputs are electronically balanced and can be wired unbalanced by grounding the non-phase signal, allowing you to feed both balanced and unbalanced equipment.\u003cbr\u003e\u003cbr\u003eFor each channel there are independent switches to control a high pass filter (low frequency roll-off at 125Hz) and to provide phantom power at +48V to the connected microphones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"RB-MA2 Diagram\" src=\"https:\/\/www.sonifex.co.uk\/images\/redbox\/rb-ma1_rb-ma2_block_diagram_598px.jpg\"\u003e\u003c\/p\u003e\n\u003cp class=\"caption\"\u003eRB-MA2 Block Diagram.\u003c\/p\u003e","brand":"Sonifex","offers":[{"title":"Default Title","offer_id":49338546028871,"sku":"RB-MA2","price":471.36,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0809\/6304\/3655\/files\/60502b8e628cc664ba816c2a918f5b35040b0199ec6ff8e2b5b8e46af0b71c32.jpg?v=1712296324"},{"product_id":"sonifex-rb-ma2g-dual-microphone-amplifier-with-gain-controls","title":"SONIFEX RB-MA2G Dual Microphone Amplifier with Gain Controls","description":"\u003ch1\u003e\u003cspan style=\"color: #012169;\"\u003e\u003cstrong\u003eSONIFEX RB-MA2G Dual Microphone Amplifier with Gain Controls\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp class=\"caption\"\u003e\u003cstrong\u003eCategory:\u003c\/strong\u003e Microphone Amplifiers \u0026amp; Limiters.\u003cbr\u003e\u003cstrong\u003eProduct Function:\u003c\/strong\u003e Amplification of two mic level signals to line level.\u003cbr\u003e\u003cstrong\u003eTypical Applications:\u003c\/strong\u003e To amplify additional microphones in a studio talks area, courtroom microphone amplification, converting mic signal where mic and amp are a long distance apart.\u003c\/p\u003e\n\u003cp class=\"caption\"\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003cbr\u003eNeutrik XLR connectors.\u003cbr\u003eMic input gain adjustment.\u003cbr\u003e+48V phantom power.\u003cbr\u003eHigh pass (rumble) filter.\u003cbr\u003eFront panel level adjustment.\u003cbr\u003eFront panel LED metering.\u003c\/p\u003e\n\u003cp class=\"bold_para\"\u003e\u003cstrong\u003eThe RB-MA2G\u003c\/strong\u003e consists of two independent low-noise microphone pre-amplifiers with front panel level controls and metering, for converting microphone level signals to line level, or for driving long lines from microphones to mixing equipment.\u003c\/p\u003e\n\u003cp\u003eAll connections are on the rear panel. The microphone input is XLR-3 type and is electronically balanced. The input gains can be adjusted individually by recessed pre-set potentiometers.\u003c\/p\u003e\n\u003cp\u003eTwo front panel potentiometers give ±12dB level adjustment and a 12 segment LED meter shows the audio level for each channel.\u003c\/p\u003e\n\u003cp\u003eThe XLR-3 line output is electronically balanced and can be wired unbalanced by grounding the non-phase signal, allowing you to feed both balanced and unbalanced equipment. For each channel there are independent switches to control a high pass filter (low frequency roll-off at 125Hz) and to provide phantom power at +48V to the connected microphone. An LED power indicator on the front panel displays the power supply connection.\u003c\/p\u003e\n\u003cp class=\"caption\"\u003e \u003c\/p\u003e","brand":"Sonifex","offers":[{"title":"Default Title","offer_id":49338650394951,"sku":"RB-MA2G","price":599.4,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0809\/6304\/3655\/files\/dd46bbde4d698e62279e1952ade2f5e5dfce1f1c7a4e3dd32426328175a04cd1.jpg?v=1712298669"},{"product_id":"sonifex-rb-mtv1-voiceover-monitor-with-talkback","title":"SONIFEX RB-MTV1 Voiceover Monitor with Talkback","description":"\u003ch1\u003e\u003cspan style=\"color: #012169;\"\u003e\u003cstrong\u003eSONIFEX RB-MTV1 Voiceover Monitor with Talkback\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eThe RB-MTV1\u003c\/strong\u003e has four inputs and two outputs. It has a mono microphone input on XLR with switched coarse gain and variable fine gain control using a multi-turn preset potentiometer to give an overall gain range from +20dB to +80dB. There is also a switched LF rumble filter, switched +48V phantom power and switched level limiting control. A rear-panel multi-turn preset potentiometer allows adjustment of the threshold at which the limiter begins to operate, from -8dBu to +26dBu. There is an indication of the limiter activity using a blue LED and the microphone level is monitored by a simple 5 LED meter. The meter can be configured to either show the MIC signal activity in normal operation, i.e. when TALK is pressed the meter is off, or the meters can permanently show the MIC activity even when the TALK button is on or the MIC button is off.\u003cbr\u003e\u003cbr\u003eThere is a mono balanced TALKBACK input on XLR. There are two balanced XLR stereo inputs, CUE and programme (PGM) each with a 10dB input gain switch to facilitate the use of unbalanced sources such as from PC audio cards, domestic CD players, etc.\u003cbr\u003e\u003cbr\u003eEach of these inputs, MIC, TALKBACK, CUE and PGM can be mixed and monitored in the front and rear headphone outputs with individual volume controls. Which of the inputs is presented to the headphone outputs can be configured using two banks of DIPswitches on the underside of the unit, one bank for audio that is heard in the left ear piece and one bank for audio monitored in the right ear piece. For example, the left and right PGM inputs can be sent to the right ear-piece and all other signals to the left ear-piece, or the TALK signal could be sent to the right ear-piece and all other signals to both ear-pieces. In this way, you can configure the unit for your particular application on installation. If a presenter doesn’t like to hear themselves in their headphones when using the TALK button, there is also a DIPswitch option to mute the mic signal to the headphones.\u003cbr\u003e\u003cbr\u003eThere are two mono balanced outputs. The processed microphone signal is fed to the two outputs when the latching front panel MIC button is active - the button illuminates when active. \u003cbr\u003e\u003cbr\u003eThe two main outputs can be independently switched to be at ‘Line’ or ‘Mic’ level outputs using rear panel push switches. Setting the output to a microphone level allows the unit to be inserted into the microphone channel of a mixer. There is an option to permanently enable the MIC button, even when remotely controlled, for occasions when you always want the MIC channel left open. Additionally, there is an option to mix the CUE input as a mono feed to the outputs permanently.\u003cbr\u003e\u003cbr\u003eThe front panel TALK button is a momentary push switch that routes the processed microphone signal to the “LAZY” TALK output, whilst disconnecting it from the main outputs, allowing the operator to talk to a colleague. This enables the unit to be used as a talkback intercom between two or more studios.\u003cbr\u003e\u003cbr\u003eThere is a rear panel remotes connector giving remote control of the two front panel MIC and TALK buttons and opto-isolated tallies of their status. A red LED on the front panel of the unit indicates when power is present.\u003c\/p\u003e\n\u003cp class=\"caption\"\u003e\u003cimg src=\"https:\/\/www.sonifex.co.uk\/images\/redbox\/rb-mtv1_diagram.jpg\" alt=\"RB-MTV1 Diagram\" width=\"597\" height=\"307\"\u003eRB-MTV1 Block Diagram.\u003c\/p\u003e","brand":"Sonifex","offers":[{"title":"Default Title","offer_id":49340375957831,"sku":"RB-MTV1","price":925.32,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0809\/6304\/3655\/files\/rb-mtv1_iso.jpg?v=1712326947"},{"product_id":"sonifex-rb-ma1-single-microphone-amplifier","title":"SONIFEX RB-MA1 Single Microphone Amplifier","description":"\u003ch1\u003e\u003cspan style=\"color: #012169;\"\u003e\u003cstrong\u003eSONIFEX RB-MA1 Single Microphone Amplifier\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp class=\"bold_para\"\u003eThe RB-MA1 consists of a low noise microphone pre-amplifier for converting mic level signals to line level, or for driving long lines from microphones to mixing equipment.\u003c\/p\u003e\n\u003cp\u003eThe connections and controls are on the rear panel. The microphone input is an XLR-3 type and is electronically balanced. The gain for the input can be adjusted by a recessed pre-set potentiometer which allows for the use of both dynamic and powered microphones.\u003cbr\u003e\u003cbr\u003eThe line output is of an XLR-3 type and is electronically balanced. It can be wired unbalanced by grounding the non-phase signal, allowing you to feed both balanced and unbalanced equipment.\u003cbr\u003e\u003cbr\u003eThere is a switch to control a high pass filter (low frequency roll-off at 125Hz) and to provide phantom power at +48V to the connected microphone.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.sonifex.co.uk\/images\/redbox\/rb-ma1_rb-ma2_block_diagram_598px.jpg\" alt=\"RB-MA1 Diagram\"\u003e\u003c\/p\u003e\n\u003cp class=\"caption\"\u003eRB-MA1 Block Diagram.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.sonifex.co.uk\/company\/logos-images\/productimages\/redbox\/rb-ma1_rb-ma2_block_diagram_300dpi.jpg\" rel=\"noopener\" target=\"_blank\"\u003eSee larger image \u0026gt;\u003c\/a\u003e\u003c\/p\u003e","brand":"Sonifex","offers":[{"title":"Default Title","offer_id":49340383166791,"sku":"RB-MA1","price":442.26,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0809\/6304\/3655\/files\/rb-ma1-rear.jpg?v=1712327019"}],"url":"https:\/\/3dbroadcastsales.com\/collections\/microphone-amplifiers.oembed","provider":"3D Broadcast","version":"1.0","type":"link"}