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Focusrite ISA 428 MKII
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Precios Precio: 1799.00 € 1498,00 Los precios incluyen el IVA.
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Distribuidor Oficial

Focusrite ISA 428 MKII 4Channel Professional Estudio Mic Preamp

Información en inglés:
The ISA428 MkII provides four of Focusrite’s prestigious transformer-based microphone preamps It features the same classic circuitry and renowned audio quality found in the original at a new level of affordability With selectable input impedance, direct instrument inputs and an optional eight channels of high-quality analogue to digital conversion, the ISA428 MkII creates the perfect front end for the discerning recording professional
ISA 428 MKII Más información en inglés(EU.MusicianUniversity.com)

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Especificaciones

Mic Inputs
•Frequency response at minimum gain (0dB): -0.35dB at 20Hz and –3dB at 122kHz
•Frequency response at maximum gain (60dB): –2.5dB at 20Hz and –3dB 103kHz
•Gain range: 0dB to +60dB in 10dB steps, plus 0dB to +20dB continuously variable trim
•Maximum headroom: +7.4dBu
•THD+N: 0.0009% (measured at 1kHz -20dBu input signal, at 30dB gain setting, with a 20Hz/22kHz bandpass filter)
•Noise EIN: -126dB (measured at 60dB of gain with 150Ù termination and 20Hz/22kHz bandpass filter)
•Noise at main output with unity gain: -98dBu (measured with a 20Hz/22kHz bandpass filter)
•SNR: 123dB (relative to max output 25dBu)
•SNR: 120dB (relative to 0dBFS (+22dBu)
•CMRR: 88dB.
•Input Impedance, variable: 600Ù, 1400Ù, 2400Ù, 6800Ù

Line Inputs
•Frequency Response at unity gain (0dB): -0.3dB at 20Hz and –3dB at 94kHz
•Gain range: -20dB to +10dB in 10dB steps, plus 0dB to +20dB continuously variable trim
•Maximum headroom: +25.4dBu
•THD+N: 0.002% (measured with +4dBu input signal, 0dB gain setting, with a 20Hz/22kHz bandpass filter)
•Noise at main output with unity gain: -91dBu (measured with a 20Hz/22kHz bandpass filter)
•SNR: 116dB (relative to max output 25dBu)
•SNR: 113dB (relative to 0dBFS +22dBu). Input Impedance: 10kÙ

Instrument Inputs
•Frequency Response at +10dB gain: -0.2dB at 20Hz and 0dB at 200kHz
•Frequency Response at +40dB gain: -3dB at 20Hz and –3dB at 38.4kHz
•Gain range: +10dB to +40dB continuously variable
•Maximum headroom: +11.5dBu
•THD+N: 0.006% (measured with –20dBu input signal, at minimum gain (+10dB), with a 20Hz/22kHz bandpass filter)
•Noise at main output with minimum gain (+10dB): -95dBu (measured with a 20Hz/22kHz bandpass filter)
•Input Impedance = >1MÙ

High Pass Filter
•Roll off = 18dB per octave 3 pole filter
•Frequency range: 16Hz to 420Hz (continuously variable, measured at the 3dB down point)

Meters

6 LED meter is calibrated 0dBFS = +22dBu (the maximum level which can be correctly converted by the optional internal A/D converter before overload occurs). The meter calibration points are as follows:
•Meter panel calibration value in dBFS / Equivalent dBu value
•0dBFS / +22dBu
•-2dBFS / +20dBu
•-6dBFS / +16dBu
•-12dBFS / +10dBu
•-18dBFS / +4dBu
•-42dBFS / -20dBu

Front and rear connectivity

Analogue Channel Inputs (Inputs 1-4)
•4 instrument 1⁄4” TS jack inputs on front panel
•4 microphone XLR inputs on rear panel
•4 line 1⁄4” TRS jacks on rear panel
•4 insert return 1⁄4” TRS jacks on rear panel
•4 ADC XLR inputs on rear panel

Analogue Audio Outputs (Outputs 1-4)
•4 line XLR outputs on rear panel
•4 insert send 1⁄4” TRS jacks on rear panel

Other I/O
•IEC power input connector 100Vac – 240Vac

Front Panel Indicators
•8 output meters, 6 segment
•4 30-60 mic gain range selection indicator
•4 +48V phantom power indicator
•4 Phase indicator
•4 Insert In indicator
•4 Filter In indicator
•4 Input selection indicators (Mic, Line, Inst)
•4 Z In microphone input impedance selection indicators (Low, ISA110, Med, High) Clock select indicators (44.1, 48, 88.2, 96, 176.4, 192)
•Ext clock indicators (Lock, Word clock, 256X)

Weight
•5.5kg
•12.2lbs

Dimensions (W x H x D)
•480mm (W) x 88mm (H) x 280mm (D)
•19" (W) x 3.5" (H) x 11" (D)

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