Focusrite ISA828 MKII 8-Channel Mic Pre

SKU
FOCUSRITE-ISA828MK2
Special Price $2,999.99 Regular Price $3,379.99
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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)

 

More Information
ConditionNew
MPN (manufacturer part number)ISA828MKII
UPC (Universal Product Code)00815301001140
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