Fredenstein F603A 500 Series EQ

$517.00 to $689.00 Price Tier: High-end

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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 February 6, 2026.

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Price

$517.00

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Average Price: $603

High-end/Boutique

$100

$501+

Price Tier

In the Effects Processors category, Fredenstein F603A 500 Series EQ is priced in the High-end/Boutique range. This premium gear is built to very high standards and offers premium features.

Budget

Standard

High-end

Price History

Based on price data from 1 merchant for "Fredenstein F603A 500 Series EQ". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

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Discover the sonic potential of your studio with the Fredenstein F603A 500 Series EQ. This high-performance equalizer is crafted for precision, featuring passive resonant LC filters that ensure your sound remains both silky and meticulously detailed. Ideal for studio engineers who demand accuracy, the F603A offers a unique high-Q design for surgical 4-band EQ adjustments. Whether you're tracking or mixing, its short signal path and high-power output stage, capable of driving complex loads, deliver uncompromised audio integrity.

The F603A's intuitive interface includes low- and high-frequency shelving filters with four selectable frequency centers, while the two midrange peaking filters boast six selectable frequencies. Each frequency band offers a generous +/-16dB gain range, giving you the flexibility to shape your sound precisely. Mini switches with LED indicators make toggling between filter ranges a breeze, while the true hard bypass function allows for instant wet/dry comparisons, ensuring your creative process remains seamless.

Key Features:

4-band equalizer optimized for precise tracking and mixing
High-Q design with a value of 2 for surgical EQ adjustments
Passive LC filters with a short, purist signal path
Low- and high-frequency shelving filters with 4 frequency centers
Two midrange peaking filters offering 6 frequency centers
Mini switches with LED indicators for easy filter range selection
+/-16dB gain range per filter band
High-power output stage for driving complex loads
True hard bypass for instant wet/dry comparisons
Requires a compatible 500 Series chassis for operation

Product specs

Type	Solid State 4-band EQ
Number of Channels	1
Number of Bands	4
Boost/Cut Range	±16dB
Q Type	Fixed Q value of 2
Freq Range High	Shelving, select from 7kHz to 12kHz
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 35Hz to 120Hz
Bypass	True Hard Bypass
Power Usage	±16V DC, ±200mA
Module Slot Size	Single

FAQs

What type of EQ is the Fredenstein F603A 500 Series?: The Fredenstein F603A is a solid-state 4-band equalizer designed for precise audio shaping in studio environments.
How many frequency bands does the Fredenstein F603A 500 Series EQ have?: The Fredenstein F603A features four frequency bands, allowing for detailed adjustments across the audio spectrum.
What kind of bypass does the Fredenstein F603A 500 Series EQ use?: The Fredenstein F603A 500 Series EQ utilizes a true hard bypass, ensuring no signal coloration when the EQ is disengaged.
What is the frequency range for the low band on the Fredenstein F603A 500 Series EQ?: The low band on the Fredenstein F603A EQ is a shelving filter that can be adjusted between 35Hz and 120Hz.
Is the Q value adjustable on the Fredenstein F603A 500 Series EQ?: The Fredenstein F603A 500 Series EQ has a fixed Q value of 2, providing a consistent bandwidth for frequency adjustments.