Focusrite ISA 828 8 Channel Pre Pack Pre-Amp

The Focusrite ISA 828 8-Channel Pre Pack Pre-Amp delivers eight channels of transformer-based preamplification derived from the legendary ISA 110 console module. Housed in a sturdy 2U chassis, it provides studio-grade performance with switchable input impedance, line/instrument inputs, and insert points on every channel—ideal for engineers who demand sonic flexibility and clarity across multiple sources.

To learn about the technical specifications of ISA 828, download the user manual here.

Features:

• Eight ISA-series mic preamps with Lundahl LL1538 transformers
• Variable impedance on each mic input for microphone matching
• Switchable line and front-panel instrument inputs
• High-pass filter per channel (18dB/octave at 75Hz)
• Balanced insert points on all channels
• Optional 8-channel 24-bit/192kHz A/D card (ISA 828 A/D, sold separately)
• LED metering for all channels with pre-/post-insert selection
• Rugged 2U rackmount design for professional studios

Specifications:

• Mic Input Impedance: Low (600Ω), ISA 110 (1.4kΩ), Medium (2.4kΩ), High (6.8kΩ)
• Frequency Response: 20Hz–20kHz ±0.2dB
• THD+N: <0.0009%
• Maximum Input Level: +26dBu
• Maximum Output Level: +26dBu
• Power Requirements: 100–240V AC, 50/60Hz
• Dimensions: 48.2cm x 8.8cm x 32.5cm
• Weight: 6.5kg