The ISA 428 Pre Pack is the perfect multi-channel front end for any
professional DAW. Four classic Rupert Neve-designed, transformer-based
preamps with switchable impedance and direct instrument inputs. An
optional eight-channel 192kHz A/D converter, preceded by the all new
proprietary Soft Limiter circuit, provides the perfect path into your
Pro Tools HD system. The benefits of the ISA 428 Pre Pack preamp's
topology include superb common-mode rejection, an excellent overload
margin and, with its shared gain structure (20dB from the hand-wound
transformer and up to 40dB from the amplifier), an extremely low noise
floor and super-wide bandwidth (10Hz to 200kHz). This pre amp design is
the cornerstone of Focusrite's signature "warm-yet-transparent" sound
and the ISA 428 Pre Pack is a point of reference for any discerning
audio professional.
Focusrite ISA 428 Pre Pack At-a-Glance:
- Variable input impedance
- Soft Limiter
- Superb A/D conversion with optional card
- Best of past and present
Variable input impedance
The input stage of the ISA 428 Pre Pack provides enhanced control and
creativity allowing you to switch between four carefully selected input
impedance settings. The original ISA 110 setting is supplemented by
three further impedance settings to either perfectly match the preamp
with any microphone and maximize level, or use different settings
creatively to shape the sound of the microphone being used. Should the
need arise to place extra processing in between pre amp and conversion,
insert points are also featured on every channel.
Soft Limiter
Protecting the ADC, the ISA 428's Soft Limiter opto circuit is a new
design from Focusrite, entirely preventing any digital overs, while
minimizing the undesirable distortion that standard limiter circuits
often generate.
Superb A/D conversion with optional card
Finally, adding the new A/D converter to the ISA 428 Pre Pack gives you
cutting-edge conversion technology, encompassed within pristine
Focusrite circuitry, providing eight conversion channels of the highest
quality, at frequency rates of up to 192kHz. Running at 96kHz allows
for up to 16 (2 x 8, parallel) simultaneous digital outputs in addition
to the four main analog outputs. Digital output options include dual
AES/EBU, SPDIF and dual ADAT lightpipe. Full digital metering is
provided for every channel, alongside new "moving coil" peak meters,
designed to catch even the fastest of transients.
Best of past and present
Classic preamp technology, custom Focusrite input and limiting circuits
and the very best in A/D conversion technology, the ISA 428 Pre Pack
raises the bar for multi-channel recording solutions into Pro Tools HD,
or any other professional DAW. Equally, it can be used as an additional
set of high quality pre amps for any analogue or digital console or
hard disk recorder.
Features:
- Four classic Rupert Neve-designed transformer-based preamps
- 8 channels of cutting-edge A/D conversion, running at up to 192kHz
- Protected by proprietary optical Soft Limiter circuit
- Switchable Impedance for unparalleled mic matching or extended mic creativity - includes the classic ISA 110 setting
- Multiple Front Panel Instrument DI. No separate DI box required
- Analogue insert points on every channel
- Rupert Neve-designed High Pass Filters on every channel
- New moving coil peak meters & full digital metering (dBfs)
