Focusrite Pro ISA 828 8-Channel Microphone Preamplifier

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Focusrite Pro ISA 828 8-Channel Microphone Preamplifier
Product no: TS-ISA828 Bax Music Warranty: This product comes with a 3-year warranty.

General

The Focusrite Pro ISA 828 microphone preamplifier hosts eight Focusrite Pro ISA 110 mic preamps in one, and is great for studio and stage use! More specifically, it features eight balanced inputs (equipped with phantom power), six LED VU meters, a 25-pin D connector for ProTools, switchable impedance per channel, inserts on all eight channels, a high-pass filter and phase reversal.

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Specifications

Product features

19-inch rack size	2U
Number of channels	8
Digital output	yes
Energy source	AC
Phantom power	yes
Phase reverse	yes
Headphone output	no
Built-in compressor	no
Built-in equaliser	no
Built-in limiter	no
Connection sockets	none
Analogue audio input type	balanced line in (TRS jack), balanced line in (DB25), microphone input (XLR), Hi-Z instrument input (TS jack)
Analogue audio output type	balanced line out (DB25)
Equipped with tube	no

Weight and dimensions including packaging

Weight (incl. packaging)	9,0 kg
Dimensions (incl. packaging)	65,0 x 51,0 x 22,0 cm

Product specifications

mic input response
gain range: 0 dB to 60 dB in 10dB steps
EIN (similar input noise): -126 dB measured at 60 dB with a gain of 150 ohms ending impedance and a 22Hz/22kHz bandpass filter
noise at head output with a single gain of (0 dB): -97 dBu measured with a 22Hz/22kHz bandpass filter
signal/noise ratio in perspective with a maximum headroom (9 dBu): 106 dB
THD at minimum gain (30 dB): 0.0008% measured with a 1 kHz-20dBu input signal and a 22Hz/22kHz bandpass filter
frequency response at min. gain (0 dB): -0.5 dB under 10 Hz and -3 dB under 110 kHz
frequency response at max. gain (60 dB) -3 dB under 16 Hz and -3 dB under 85 kHz
CMRR: 91.8dB (channel 1, 1 kHz, maximum gain)
crosstalk channel to channel: with 10 dB at 1 kHz input signal to chA, chB output = 102 dBrA. with 10 dB at 10 kHz input signal to chA, chB output = 84 dBrA
line input response
gain range: -20 dB to +10 dB in 10 dB steps
input impedance: 0 k input from 10 Hz to 200 kHz
noise at head output with a single gain of (0 dB): -96 dBu measured with a 22Hz/22kHz bandpass filter
signal/noise ratio in perspective with a maximum headroom (24 dBu): 120 dB
signal/noise ratio in perspective with 0 dBFS (+22 dBu): 118 dB
THS at minimum gain (0 dB): 0.001% measures with a 0 dBu input signal and with a 22Hz/22kHz bandpass filter
instrument input response
gain reach: 10 dB to 40 dB constant variable
input impedance: 1 M or 300 k
noise at minimum gain (+10 dB): -90 dBu with a 22Hz/22kHz bandpass filter
noise at maximum gain (+40 db)-62 dBu with a 22Hz/22kHz bandpass filter
THS at minimum gain (+10 dB): 0.002% with a 10dBu input signal and with a 22Hz/22kHz bandpass filter
frequency response at 10 dB gain with -10 dB input: 10 Hz - 200 kHz +/- 0.6 dB
frequency response at 40 dB gain with -40dB input: -2.5 dB down at 10 Hz and 0 dB at 200 kHz
high-pass filter
roll off: 18 dB per octave 3-pole filter
fixed frequency: 75 Hz at 3 dB (lowest point)
weight: 8.84 kg
dimensions: 484 x 85 x 305 mm (W x H x D)