ISA 428 MkII

Home Academic Focusrite Focusrite Pro ISA 428 MkII Educational
ISA 428 MkII Educational
Email A Friend Add To Wishlist
FRT-ISA428MKII
Focusrite
Mac & Win
Usually ships in 1-2 business days.
Availability: In stock
As low as $1,799.99

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

·        Brainworx 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.

MIC INPUTS

Frequency Response At Minimum Gain (0dB) (Mic)

 

-0.35dB at 20Hz and 3dB at 122kHz

 

Frequency Response At Maximum Gain (60dB) (Mic)

 

2.5dB at 20Hz and 3dB 103kHz

 

Gain Range (Mic)

 

0dB to 60dB in 10dB steps, plus 0dB to 20dB continuously variable trim

 

Maximum Headroom (Mic)

 

7.4dBu

 

Noise EIN (Mic)

 

-126dB (measured at 60dB of gain with 150O termination and 20Hz/22kHz bandpass filter)

 

Noise At Main Output With Unity Gain (Mic)

 

-98dBu (measured with a 20Hz/22kHz bandpass filter)

 

SNR (Mic)

 

123dB (relative to max output 25dBu) 120dB (relative to 0dBFS ( 22dBu)

 

CMRR (Mic)

 

88dB

 

Input Impedance, Variable (Mic)

 

600O, 1400O, 2400O, 6800O

 

LINE INPUTS

Frequency Response At Unity Gain (0dB) (Line)

 

-0.3dB at 20Hz and 3dB at 94kHz

 

Gain Range (Line)

 

-20dB to 10dB in 10dB steps, plus 0dB to 20dB continuously variable trim

 

Maximum Headroom (Line)

 

25.4dBu

 

THD N (Line)

 

0.002 (measured with 4dBu input signal, 0dB gain setting, with a 20Hz/22kHz bandpass filter)

 

Noise At Main Output With Unity Gain (Line)

 

-91dBu (measured with a 20Hz/22kHz bandpass filter)

 

SNR (Line)

 

116dB (relative to max output 25dBu) 113dB (relative to 0dBFS 22dBu). Input Impedance: 10kO

 

Frequency Response At 10dB Gain (Instrument)

 

-0.2dB at 20Hz and 0dB at 200kHz

 

Frequency Response At 40dB Gain (Instrument)

 

-3dB at 20Hz and 3dB at 38.4kHz

 

INSTRUMENT INPUTS

Gain Range (Instrument)

 

10dB to 40dB continuously variable

 

Maximum Headroom (Instrument)

 

11.5dBu

 

Noise At Main Output With Minimum Gain ( 10dB) (Instrument)

 

-95dBu (measured with a 20Hz/22kHz bandpass filter)

 

Input Impedance (Instrument)

 

>1MO

 

HIGH PASS FILTER

Roll Off

 

18dB per octave 3 pole filter

 

Frequency Range

 

16Hz to 420Hz (continuously variable, measured at the 3dB down point)

 

FRONT AND REAR CONNECTIVITY

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

 

WEIGHT AND DIMENSIONS

Weight

 

5.5kg (12.2lbs)

 

Dimensions

 

480mm (W) x 88mm (H) x 280mm (D)

Write Your Own Review
You're reviewing:ISA 428 MkII
Your Rating

Related Products