{"product_id":"palmer-bridge-4a-active-4-channels-line-isolation-di-box-19","title":"Palmer BRIDGE 4A+ Active 4-Channels Line Isolation DI Box - 19\"","description":"\u003cp\u003eThe BRIDGE 4A+ is a multifunctional device: each of the four channels can be used independently as an active DI box, a line isolation box, or a booster. The input combo socket accepts unbalanced and balanced signals. The outputs are designed as two transformer-balanced XLR sockets per channel (one on the front and one on the rear).\u003c\/p\u003e\n\u003cp\u003eThe galvanic isolation via transformer eliminates hum loops, and the ground lift switch can also be used to eliminate noise and interference that occurs with already balanced input signals. The Palmer BRIDGE 4A+ reliably eliminates any hum - and when connecting unbalanced equipment, the signal is also balanced.\u003c\/p\u003e\n\u003cp\u003eIf necessary, the signal level can be raised in three stages by 6dB, 12dB or 18dB. The audio over Cat output allows the signals of all 4 channels to be routed via a single Cat cable. This saves material, space, and time.\u003c\/p\u003e\n\u003cp\u003eThe BRIDGE 4A+ line isolation box is a universal problem solver for eliminating ground loops. Whether it's at home, at lectures, in the rehearsal room, on stage, in clubs, or at large events - the Palmer BRIDGE 4A+ ensures a clean sound without interference anywhere.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFor connecting devices with unbalanced or balanced outputs to PA systems\u003c\/li\u003e\n\u003cli\u003eReliably eliminates ground loop hum thanks to galvanic transformer isolation\u003c\/li\u003e\n\u003cli\u003eCombo inputs, can be used with XLR connectors or 1\/4\" jacks\u003c\/li\u003e\n\u003cli\u003e2 balanced XLR outputs per channel\u003c\/li\u003e\n\u003cli\u003eAudio over Cat output (AES72 Type 5e) for forwarding all signals via a single Cat cable\u003c\/li\u003e\n\u003cli\u003eGround-lift switch for each output\u003c\/li\u003e\n\u003cli\u003eSolid 19\" housing, 1U\u003c\/li\u003e\n\u003cli\u003ePower supply: 9-18V DC, center negative\u003c\/li\u003e\n\u003cli\u003eEngineered in Germany\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProduct type: DI boxes, Line isolators\u003c\/li\u003e\n\u003cli\u003eType: active\u003c\/li\u003e\n\u003cli\u003eTransformer isolated: yes\u003c\/li\u003e\n\u003cli\u003eChannels: 4\u003c\/li\u003e\n\u003cli\u003eInputs: 4\u003c\/li\u003e\n\u003cli\u003einput type: balanced\/ unbalanced\u003c\/li\u003e\n\u003cli\u003eInput connectors: 6.3 mm jack, XLR\u003c\/li\u003e\n\u003cli\u003eNumber of outputs: 4 (+ 4 parallel XLR outs + AoC)\u003c\/li\u003e\n\u003cli\u003eTHRU outputs\/channel: 0\u003c\/li\u003e\n\u003cli\u003eOutput type: balanced\u003c\/li\u003e\n\u003cli\u003eOutput connectors: RJ45, XLR\u003c\/li\u003e\n\u003cli\u003eOutput attenuation (PAD): 0 dB \/ 20 dB\u003c\/li\u003e\n\u003cli\u003eCabinet material: sheet steel\u003c\/li\u003e\n\u003cli\u003eWidth: 482 mm\u003c\/li\u003e\n\u003cli\u003eWidth: 19 \"\u003c\/li\u003e\n\u003cli\u003eDepth: 90 mm\u003c\/li\u003e\n\u003cli\u003eHeight: 44 mm\u003c\/li\u003e\n\u003cli\u003eHeight: 1 U\u003c\/li\u003e\n\u003cli\u003eWeight: 2.1 kg\u003c\/li\u003e\n\u003cli\u003eGround lift switch: yes\u003c\/li\u003e\n\u003cli\u003eOperating voltage: 9 V - 18 V\u003c\/li\u003e\n\u003cli\u003ePower consumption: 2 W\u003c\/li\u003e\n\u003cli\u003eAdditional Features: 6\/12\/18 dB gain, AoC output with ground lift, power LED\u003c\/li\u003e\n\u003cli\u003eAmbient temperature during operation -20 - 70 °C\u003c\/li\u003e\n\u003cli\u003eRelative Humidity: \u0026lt; 80% (non-condensing)\u003c\/li\u003e\n\u003cli\u003eAccessories (included): external power supply PW9V\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAudio\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMax. input level (\u0026lt; 1% THD, 20 Hz): +10 dBu\u003c\/li\u003e\n\u003cli\u003eMax. input level (\u0026lt; 1% THD, 1 kHz): +16 dBu\u003c\/li\u003e\n\u003cli\u003eMax. output level (\u0026lt;1% THD, 20 Hz - 20kHz): +7 dBu\u003c\/li\u003e\n\u003cli\u003eFrequency response (±0,2 dB, relative 1 kHz): 20 Hz - 20 kHz\u003c\/li\u003e\n\u003cli\u003eInput impedance (1 kHz): 20 kOhm\u003c\/li\u003e\n\u003cli\u003eOutput impedance (1 kHz): 84 Ohm(s)\u003c\/li\u003e\n\u003cli\u003eTHD + N (30 Hz, +4 dBu, unity, unweighted): \u0026lt; 0.0023%\u003c\/li\u003e\n\u003cli\u003eTHD + N (1 kHz, +4 dBu, unity, unweighted): \u0026lt; 0.0009%\u003c\/li\u003e\n\u003cli\u003eIMD (SMPTE) (60 Hz \/ 7 kHz, 4:1, +4 dBu): \u0026lt; 0.0018%\u003c\/li\u003e\n\u003cli\u003eSNR (+4 dBu, 22 kHz BW, unity, unweighted): 105 dB\u003c\/li\u003e\n\u003cli\u003eTransformer ratio: 10 : 1\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Palmer","offers":[{"title":"Default Title","offer_id":43224092475471,"sku":"PAL-PBRIDGE4APLUS","price":869.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0054\/9466\/9382\/files\/PBRIDGE4APLUS_2.jpg?v=1750693064","url":"https:\/\/shop.musicredone.com\/products\/palmer-bridge-4a-active-4-channels-line-isolation-di-box-19","provider":"RedOne Music Canada","version":"1.0","type":"link"}