Fredenstein F603B – 500 Series Low-Q Four-Band Equalizer Module

The Fredenstein F603B is a high-performance four-band equalizer module designed for the 500 Series format, ideal for tracking and mixing applications. It features passive LC (inductor/capacitor) filters combined with a short, purist signal path, ensuring exceptional audio quality. The equalizer offers a low-Q setting (Q=0.8) for broad tonal adjustments, making it suitable for overall sound sculpting. The low and high-frequency filters are shelving types, while the mid frequencies are band-pass filters, each with selectable frequencies. The active filter range is indicated by LEDs, and a true hard bypass is available for sound comparisons. Each filter provides a ±16 dB gain range, allowing for subtle to significant tonal adjustments. The high-power output stage, with an impedance of less than 20 ohms and a driving capability of up to ±200 mA, ensures no loss of performance with even the most demanding complex loads. Designed by a German-American team and manufactured in Taiwan, the F603B exemplifies Fredenstein's commitment to quality and innovation. 

Key Features:

• Four-Band Equalizer: Provides comprehensive tonal control for various audio sources.
• Low-Q Design (Q=0.8): Ideal for broad tonal adjustments and overall sound sculpting.
• Passive LC Filters: Ensures high-quality, transparent sound.
• Short Signal Path: Maintains audio integrity with minimal coloration.
• Low and High-Frequency Shelving Filters: Selectable frequencies for bass and treble adjustments.
• Midrange Band-Pass Filters: Six selectable frequencies for detailed midrange control.
• LED Indicators: Displays active filter range for easy monitoring.
• ±16 dB Gain Range per Filter: Allows for subtle to significant tonal adjustments.
• True Hard Bypass: Facilitates instant wet/dry comparisons.
• High-Power Output Stage: Drives complex loads without performance loss.
• Requires Compatible 500 Series Chassis: Designed for integration into standard 500 Series racks.

Specifications:

The Fredenstein F603B is an essential tool for audio professionals seeking precise and musical dynamic control with advanced sound-shaping capabilities. Its combination of high-quality components and versatile features make it a valuable asset in any recording setup.