FOCUSRITE Classic ISA 828 MKII 8-Channel Microphone Preamplifier

Sharing the simple mic preamp design of the original Focusrite ISA 110 module from the Focusrite Studio Console, the ISA 828 MK2 incorporates eight of Focusrite’s classic mic preamps, with Lundahl LL1538 transformers on every input. Each channel has a choice of mic or line inputs, while inputs 1–4 also feature front-panel instrument inputs. Each mic preamp has a variable input impedance, to provide a range of subtly different sonic options when using microphones, including an ‘ISA 110’ setting, which replicates the impedance of the original Focusrite mic preamp.

• Classic ISA microphone preamplifier design with Lundahl LL1538 input transformer.


• The switching power supply design allows for efficient and cool operation.


• The front panel instrument inputs for the first four channels offer two impedance options: high (2.4 MΩ) and low (470 kΩ).


• Line inputs with dedicated input connectors and switch on the front panel.


• Switchable input impedance including classic ISA 110 setting.


• High-pass filters.


• Switchable insert points when used with AD card.


• Six-segment LED peak level meters per channel, calibratable.


• Front panel


• Instrument Inputs: 4 x 1/4" mono jack sockets.


• Back panel


• Microphone Inputs: 8 x XLR-3 female.


• Line Level Inputs: 8 x 1/4" balanced plug socket.


• Line level outputs: 1 x DB25 female (Tascam analog AES59).


• AD Inputs 1 x DB25 female (Tascam analog AES59).


• Digital card slot: ISA ADN8 Compatible Card.


• This product has a 1-year warranty against factory defects.