
Focusrite ISA828 MKII 8-Channel Mic Pre
MPN (manufacturer part number) | ISA828MKII |
---|---|
UPC (Universal Product Code) | 00815301001140 |
Condition | New |
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Eight Channels of Legendary Focusrite Preamplification
The Focusrite ISA828 MKII puts eight of Focusrite’s legendary ISA microphone preamps into a compact 2U chassis, giving you amazing sound quality in a unit that’s convenient for your studio or live rig, while being gentle on your budget. The original ISA828 was a huge hit at Sweetwater and certainly a tough act to follow; but Focusrite, as always, rose to the challenge with the ISA828 MKII, which features several improvements such as a new switching power supply that delivers more efficient energy usage, reduced heat generation, and increased operational reliability.
World-class sound and flexibility
The ISA828 MKII features a variable impedance circuit with several settings, and also includes eight line/four instrument inputs with high and low impedance options. Using 25-pin D-type connectors, this preamp is easy to interface with Pro Tools HD rigs, as well as other popular DAWs and mixing desks. Another new feature is a slot for the optional Focusrite ISA ADN8 8-channel A-D card, for high-quality conversion to Dante, ADAT, and AES3 formats at sampling rates of up to 24-bit/192kHz. The preamps are complemented by eight rear-panel line inputs and four front-panel instrument inputs.
Variable impedance and highpass filtars
The microphone input stage includes a variable impedance circuit, letting you switch between four carefully selected input impedance settings. The original ISA110 setting is supplemented by three additional impedance settings to perfectly match/creatively mismatch the preamp with any microphone in your locker. The four front panel instrument inputs also feature high- and low-impedance options to provide a comprehensive and accessible DI solution. Insert switches are also featured on each channel, should the need arise to place outboard processing between the preamp and the optional ISA ADN8 converter card. A highpass filter, polarity reverse switch, and 6-segment LED peak level meter are also provided on every channel.
The affordable way to Focusrite your studio
The ISA828 MKII features eight of Focusrite's classic ISA transformer-balanced preamps in a single robust 2U chassis. The eight preamps feature the same vintage preamplifier design as the original ISA110 module from Focusrite’s critically acclaimed Forte console (including the original Lundahl L1538 transformer). If you've been wanting to get the signature Focusrite sound for your studio, the ISA828 MKII is an ideal way to achieve it — at a remarkably low per-channel cost!
Focusrite ISA828 MKII Features:
- 8-channel mic/line preamp with front-panel instrument inputs (channels 1–4)
- Legendary ISA mic preamp design featuring Lundahl LL1538 input transformer
- Switching power supply allows for efficient, cool operation and greater reliability
- Line inputs with dedicated input connectors and front-panel selector switches
- Switchable input impedance, including classic ISA 110 setting
- Slot for optional ISA ADN8 8-channel A-D card (available separately)
- Switchable insert points when used with ISA ADN8 card
- Per-channel highpass filter, polarity reverse, and 6-segment LED peak level
SPECIFICATIONS
MIC INPUTS
Gain Range
0dB to +30dB (30-60 switch disabled) and +30dB to +60dB (30-60 switch enabled) in 10dB steps, with an additional +20dB of continuous trim
Input Impedance
Low = 600Ω, ISA 110 = 1400Ω, Med (Medium) = 2400Ω, High = 6800Ω
Max. Input Level
+25dBu, min gain, medium Z
Frequency Response
(10Hz - 122kHz): 10Hz - 122kHz ±3dB, unity gain, medium Z
THD + N
-91dB (0.0028%) @ -1dBr, min gain, medium Z
EIN
-123dBu 'A'-Weighted (typical)
Signal-To-Noise Ratio
122dB 'A'-Weighted (typical), medium Z
Common-Mode Rejection Ratio
997Hz CMRR: -65dB, min gain, medium Z
Phantom Power
+48V, independently switchable per channel
High-Pass Filter
75Hz knee frequency, 18dB/Octave, independently switchable per channel
Phase
Inverts the phases of the selected input
WEIGHT AND DIMENSIONS
Weight (Without Accessories)
7.05kg / 15.55lbs
Weight (With Accessories)
7.48kg / 16.49lbs
Height
88mm / 3.46"
Width
482mm / 18.98"
Depth
325mm / 12.80"
LINE INPUTS
Gain Range
-20dB to +10dB in 10dB steps, with an additional +20dB of continuous trim
Input Impedance
Low = 470O, High = 2.4MO
Max. Input Level
+18dBu, min gain, low Z
Frequency Response (20Hz - 20kHz)
20Hz - 20kHz ±0.1dB, min gain, low Z
Frequency Response (10Hz - 110kHz)
10Hz - 110kHz ±1.2dB, min gain, low Z
THD + N
-83dB (0.0071%) @ -1dBr, min gain, low Z
Signal-To-Noise Ratio
100dB 'A'-Weighted (typical), min gain, low Z
INSTRUMENT INPUTS
CROSSTALK
Microphone Talkback
-80dB; 20Hz - 20kHz, min gain, medium Z
LINE CROSSTALK
Microphone Talkback
-80dB; 20Hz - 20kHz, min gain, medium Z
INSTRUMENT CROSSTALK
Microphone Talkback
-80dB; 20Hz - 20kHz, min gain, medium Z
FRONT PANEL CONNECTIVITY
Channel Count:
2 Channels In
Instrument Inputs
4 x 1/4" jack inputs
Instrument Inputs
4 x 1/4" jack inputs
REAR PANEL CONNECTIVITY
Mic Inputs
Input: 8 x Female XLR
LINE LEVEL
Channel Count
8 In and 8 Out
Input
8 x 1/4" jack inputs
Output
1 x DB-25 connectors (AES59)
INSERTS
Channel Count
8 In
Input
1 x DB-25 connectors (AES59)
DIGITAL CARD SLOT
Compatible Card
ISA ADN8
PSU
PSU
1 x IEC Input
REAR PANEL INDICATORS
Control Functions
1 x Pot (Meter Trim)
POWER
PSU
1 x Internal, 100-240V, 50/60Hz, consumption 35W.
HEAT PERFORMANCE
Operating Temperature
Operates at up to an ambient temperature of 40 degrees Celsius
FRONT PANEL INDICATORS
Control Functions
16 x Pots (Gain and Trim). 60 Switches (On/Off Switch, 30-60 Gain, +48V, Phase, HPF, Insert, Z In, Input, Meters Pre A-D, Clock Select and Ext. Word Clock)
MPN (manufacturer part number) | ISA828MKII |
---|---|
UPC (Universal Product Code) | 00815301001140 |
Condition | New |