Beschreibung
EIGHT-CHANNEL MIC PRE AND OPTIONAL A-D CARD WITH DANTEThe ISA 828 MkII incorporates eight of Focusrite’s classic mic preamps, with Lundahl LL1538 transformers on every input. Each channel has the option of mic or line inputs, while inputs 1-4 also feature instrument inputs on the front panel. Each mic pre has variable input impedance, to provide a range of subtly different sonic options when using microphones, including an ‚ISA 110‘ setting, which replicates the impedance of the original Focusrite mic pre.Up to 60dB of gain is available, with a further +20dB of continuously variable trim, providing a huge 80dB gain range. The high-pass filter has a fixed 75Hz frequency and 18dB / octave roll-off for minimising rumble, stand-borne noise and other low-frequency sounds. The ISA 828 MkII also features per-channel, six-segment LED meters, and switchable rear-panel insert points, which allow the use of inline processors such as compressors or EQs.Dedicated connectors for mic and line-level inputs allow all sources to be connected simultaneously, making ISA 828 MkII perfect for permanent installation in a rack. A switching power supply allows for efficient, cool operation, without sacrificing sound quality or performance, and increasing reliability over its predecessor. The optional ISA ADN8 analogue-to-digital expansion card provides eight Dante, ADAT and AES3 outputs at sampling rates of up to 24-bit / 192kHz.And as with all Focusrite Pro products, wherever you happen to be in the world, you can rely on a three-year warranty if any Focusrite Pro hardware needs repairing or replacing due to a manufacturing fault.Optional A-D card with up to 192kHz, 24-bit sampling offers high-quality digital audio conversion to Dante, ADAT and AES3Classic ISA mic preamp design featuring Lundahl LL1538 input transformerSwitching power supply design allows for efficient and cool operationFront-panel instrument inputs to first four channelsLine inputs with dedicated input connectors and front-panel select switchSwitchable input impedance including classic ISA 110 settingHigh-pass filter with fixed 75Hz frequency and 18dB/octave roll-offSwitchable insert points when used with A-D cardPer-channel six-segment LED peak-level metersAs with all Focusrite products, you’ll also benefit from a three-year warrantyBrainworx bx_console Focusrite – exclusive plug-in that faithfully captures the sound, feel and styling of the original Focusrite ISA 110 Equaliser and ISA 130 Dynamics Modules.SPECIFICATIONSMIC INPUTSGain Range0dB to +30dB (30-60 switch disabled) and +30dB to +60dB (30-60 switch enabled) in 10dB steps, with an additional +20dB of continuous trimInput ImpedanceLow = 600Ω, ISA 110 = 1400Ω, Med (Medium) = 2400Ω, High = 6800ΩMax. Input Level+25dBu, min gain, medium ZFrequency Response(10Hz – 122kHz): 10Hz – 122kHz ±3dB, unity gain, medium ZTHD + N-91dB (0.0028%) @ -1dBr, min gain, medium ZEIN-123dBu ‚A‘-Weighted (typical)Signal-To-Noise Ratio122dB ‚A‘-Weighted (typical), medium ZCommon-Mode Rejection Ratio997Hz CMRR: -65dB, min gain, medium ZPhantom Power+48V, independently switchable per channelHigh-Pass Filter75Hz knee frequency, 18dB/Octave, independently switchable per channelPhaseInverts the phases of the selected inputWEIGHT AND DIMENSIONSWeight (Without Accessories)7.05kg / 15.55lbsWeight (With Accessories)7.48kg / 16.49lbsHeight88mm / 3.46″Width482mm / 18.98″Depth325mm / 12.80″LINE INPUTSGain Range-20dB to +10dB in 10dB steps, with an additional +20dB of continuous trimInput ImpedanceLow = 470O, High = 2.4MOMax. Input Level+18dBu, min gain, low ZFrequency Response (20Hz – 20kHz)20Hz – 20kHz ±0.1dB, min gain, low ZFrequency Response (10Hz – 110kHz)10Hz – 110kHz ±1.2dB, min gain, low ZTHD + N-83dB (0.0071%) @ -1dBr, min gain, low ZSignal-To-Noise Ratio100dB ‚A‘-Weighted (typical), min gain, low ZINSTRUMENT INPUTSCROSSTALKMicrophone Talkback-80dB; 20Hz – 20kHz, min gain, medium ZLINE CROSSTALKMicrophone Talkback-80dB; 20Hz – 20kHz, min gain, medium ZINSTRUMENT CROSSTALKMicrophone Talkback-80dB; 20Hz – 20kHz, min gain, medium ZFRONT PANEL CONNECTIVITYChannel Count:2 Channels InInstrument Inputs4 x 1/4″ jack inputsInstrument Inputs4 x 1/4″ jack inputsREAR PANEL CONNECTIVITYMic InputsInput: 8 x Female XLRLINE LEVELChannel Count8 In and 8 OutInput8 x 1/4″ jack inputsOutput1 x DB-25 connectors (AES59)INSERTSChannel Count8 InInput1 x DB-25 connectors (AES59)DIGITAL CARD SLOTCompatible CardISA ADN8PSUPSU1 x IEC InputREAR PANEL INDICATORSControl Functions1 x Pot (Meter Trim)POWERPSU1 x Internal, 100-240V, 50/60Hz, consumption 35W.HEAT PERFORMANCEOperating TemperatureOperates at up to an ambient temperature of 40 degrees CelsiusFRONT PANEL INDICATORSControl Functions16 x Pots (Gain and Trim). 60 Switches (On/Off Switch, 30-60 Gain, +48V, Phase, HPF, Insert, Z In, Input, Meters Pre A-D, Clock Select and Ext. Word Clock)
