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Focusrite ISA 428 MKII

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ISA 428 MKII
฿59,900.00

ISA 428 MKll มาด้วยขนาด Rack 2U และมาพร้อม MIC PRE 4 Channel และ Line Input สามารถเลือกใช้ได้ตามความเหมาะสม

Focusrite ISA 428 MKII
Focusrite ISA 428 MKII Focusrite ISA 428 MKII

ISA 428 MKll ได้ถูกพัฒนาขึ้นจาก Mic Pre รุ่นพี่ อย่าง ISA 110 ที่เป็นที่นิยมและเป็นที่ยอมรับของเหล่าบรรดา Sound Engineer ทั่วโลก ใช้สร้างสรรค์เพลงมาแล้วนับร้อยๆเพลง ซึ่งพวกเขาต่างพูดเป็นเสียงเดียวกันว่า ให้สัญญาณที่สะอาด และมีความคมของเสียงเป็นอย่างดี รวมถึง Dynamic ค่อนข้างเป็นธรรมชาติ ซึ่งแน่นอนครับ ISA 428 MKll เป็นรุ่นใหม่ที่ถูกพัฒนาขึ้นให้มีความทันสมัยในเทคโนโลยี แต่ยังคงย่านเสียงที่เป็นเอกลักษณ์ของ ISA Serie ไว้เป็นอย่างดี

Four classic mic pres

ISA 428 MkII incorporates four of Focusrite's renowned mic pres in a simple-to-operate 2U enclosure, placing four mic preamps, instrument inputs and line ins at your fingertips. The original Focusrite mic pre was designed to suit the microphones of the time; today's model makes one small change, adding three additional input impedances to the classic ISA 110 setting, allowing you to match any microphone, old or new, and access a wide range of sounds, from the character and warmth of a vintage mic to the clear transparency of a modern design.

Each mic pre has the option of mic, line or the front-panel instrument input, with variable input impedance to ensure you are getting the best performance from the source. Up to 60dB of gain is available on the four-position rotary and gain range switches, with a further +20dB of continuously variable trim, meaning a huge 80dB of gain is available should it be required. The high-pass filter features variable cut-off frequency between 16 and 420Hz. An array of 6-segment LED meters show peak signal level for the four mic pres, in addition to the four direct inputs to the optional A-D card. Switchable rear-panel insert points allow the use of inline processors such as compression.

Classic ISA mic preamp design featuring Lundahl LL1538 input transformer
Instrument and line inputs with dedicated input connectors and front-panel switch
Switchable input impedance including classic ISA 110 setting
Variable cut-off frequency high-pass filter
Dedicated switchable insert point
Per-channel six-segment LED peak-level meters
Optional A-D card with up to 192kHz, 24-bit sampling via ADAT or AES3
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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 150Ω 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: 600Ω, 1400Ω, 2400Ω, 6800Ω

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: 10kΩ

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 = >1MΩ

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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คุณกำลังรีวิว:Focusrite ISA 428 MKII