FOCUSRITE ISA TWO Two Channels Of Classic Focusrite Mic Pres
FOCUSRITE ISA TWO เครื่องเปลี่ยนแปลงสัญญาณไมค์ 2 ชาแนล ISA TWO ปรีแอมป์ ไมค์ จากแบรนด์ FOCUSRITE
Focusrite’s ISA Two brings together a totally independent pair of classic ISA microphone preamps from the original ISA 110 module, combining the best of traditional solid-state electronics with the original input transformer specified by Rupert Neve – the Lundahl LL1538.
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 first 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. A pair of 8-segment LED meters show peak signal level in dBFS, while a rear-panel pot allows calibration to suit your A-D converters. Rear-panel insert points allow the use of inline processors such as compression.
- Classic ISA mic preamp design featuring Lundahl LL1538 input transformer
- Front-panel instrument inputs
- Dedicated TRS line input socket with front-panel switch
- Switchable input impedance including classic ISA 110 setting
- Dedicated insert points
- User-calibrated peak-level meters
MIC INPUT RESPONSE |
|
Gain Range (Mic) |
0 dB to 60 dB in 10 dB steps, plus 0 dB to 20 dB continuously variable trim |
EIN (Mic) |
Measured at 60 dB of gain with 150 O source impedance and 22 Hz-22 kHz band pass filter -127 dB |
Noise (Mic) |
Noise at output with unity gain (0 dB) and 22 Hz-22 kHz band pass filter -97 dBu |
Frequency Response (Mic) |
At minimum gain (0 dB)-0.5 dB at 10 Hz,?-1 dB at 135 kHz, relative to 1 kHz |
At 60 DB Gain (Mic) |
-6 dB at 10 Hz, -1 dB at 115 kHz, relative to 1 kHz |
Crosstalk Channel To Channel (Mic) |
Mic input, with I/P = 0 dBu, gain = 0 dB @ 1 kHz input to channel A, channel B output = -85 dB |
Test54654654654 |
test+O |
LINE INPUT RESPONSE |
|
Gain Range (Line) |
-20 dB to 10 dB in 10 dB steps, plus 0 dB to 20 dB continuously variable trim |
Input Impedance (Line) |
10 kO from 10 Hz to 200 kHz |
Frequency Response (Line) |
At minimum gain (0 dB)-0.3 dB at 10 Hz, -1 dB at 80 kHz, relative to 1 kHz |
Crosstalk Channel To Channel (Line) |
Line input, with I/P = 0 dBu, gain = 0dB @ 1 kHz input to channel AChannel B output?= -91 dB |
INSTRUMENT INPUT RESPONSE |
|
Gain Range (Instrument) |
10 dB to 40 dB continuously variable trim |
Input Impedance (Instrument) |
2 MO |
Noise (Instrument) |
Measured with 22 Hz-22 kHz band pass filterMinimum gain ( 10 dB) = -95 dBu |
Frequency Response (Instrument) |
At minimum gain ( 10 dB)-0.1 dB at 10 Hz,?-1 dB at 115 kHz, relative to 1 kHz |
At Maximum Gain ( 40 DB) (Instrument) |
-2.5 dB at 10 Hz, ?-1 dB at 110 kHz, relative to 1 kHz |
HIGH-PASS FILTER |
|
Roll-Off |
18 dB per octave (3 pole filter) |
Frequency Range |
Continuously variable from 16 Hz to 420 Hz (-3 dB) |
WEIGHT AND DIMENSIONS |
|
W X D X H |
480 mm x 280 mm x 44 mm |
Weight |
3.7 kg |