Fredenstein F603B 500 Series EQ

$465.30 to $517.00 Price Tier: Standard

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Page last updated Jun 13, 2026

Pricing and availability

We compare 600+ stores and found this item at 2 stores. Prices updated May 22, 2026.

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Price

$517.00

View Deal

$465.30

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Average Price: $491

Standard/Professional

$100

$501+

Price Tier

In the Effects Processors category, Fredenstein F603B 500 Series EQ is priced in the upper end of the Standard/Professional range. This is quality gear at a fair price point, suitable for beginners, hobbyists, and pros alike.

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Standard

High-end

Price History

Based on price data from 1 merchant for "Fredenstein F603B 500 Series EQ". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

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Unleash the full potential of your sound with the Fredenstein F603B 500 Series EQ—a versatile equalizer that promises to add depth, clarity, and texture to your recordings. Designed with passive LC filters and a minimalist signal path, this 4-band EQ offers both precision and warmth, making it a favorite among audio engineers and producers seeking high-quality sound sculpting tools.

The F603B stands out with its low-Q factor of 0.8, making it a go-to for general sound shaping during both tracking and mixing sessions. The low and high-frequency bands are equipped with shelving filters featuring four selectable frequency centers, while the two mid bands come with peaking filters and six selectable frequency centers. This setup allows for intricate control over your sound, ensuring that each track is uniquely tailored to perfection.

With a robust high-power output stage, the F603B can handle even the most complex loads without losing fidelity. Its true hard bypass allows for seamless wet/dry comparisons, giving you the flexibility to craft your audio landscape with confidence. Whether you're working in a professional studio or a home setup, this EQ offers the silky, detailed sonics that bring your music to life.

Key Features:

4-band equalizer for versatile tracking and mixing
Low-Q of 0.8 for overall sound sculpting
LC (inductor/capacitor) filters for enhanced tonality
Short, purist signal path for clean audio
Low- and high-frequency shelving with 4 frequency centers
Two midrange peaking filters with 6 frequency centers
LED indicators for filter range selection
Each filter offers a +/-16dB gain range
High-power output stage for complex loads
True hard bypass for instant wet/dry comparisons
Requires compatible 500 Series chassis (not standalone)

Product specs

Type	Solid State
Number of Channels	1
EQ	Parametric EQ
Number of Bands	4
Boost/Cut Range	±16dB
Q Type	Fixed
Freq Range High	Shelving, select from 7kHz to 13kHz
Freq Range Hi-Mid	Band pass filter, select from 1kHz to 5kHz
Freq Range Lo-Mid	Band pass filter, select from 200Hz to 800Hz
Freq Range Low	Shelving, select from 60Hz to 230Hz
Bypass	True Bypass
Power Usage	±16V DC, ±200mA

FAQs

What type of EQ is the Fredenstein F603B 500 Series Equalizer?: The Fredenstein F603B is a 4-band parametric EQ, allowing precise control over your audio signal's frequency content.
Does the Fredenstein F603B support true bypass?: Yes, the Fredenstein F603B features true bypass, ensuring your audio signal remains uncolored when the EQ is not engaged.
What is the frequency range for the high band on the Fredenstein F603B?: The high band on the Fredenstein F603B offers a shelving EQ with selectable frequencies ranging from 7kHz to 13kHz.
What power requirements does the Fredenstein F603B have?: The Fredenstein F603B requires ±16V DC and draws a current of ±200mA for operation.
How many channels does the Fredenstein F603B EQ support?: The Fredenstein F603B EQ is a single-channel unit, designed for processing one audio signal at a time.
What is the boost/cut range for each band on the Fredenstein F603B?: Each band on the Fredenstein F603B offers a boost/cut range of ±16dB, allowing significant tonal shaping.