PEQ-503 Equalizer

The FiveFish Audio PEQ-503 is a beautiful, high-quality, single-channel three (3) band Inductor-based equalizer, designed for the popular API VPR500 Rack format.

Each frequency band has two  (2) selectable frequencies, and a bypass switch. It also has an overall EQ In/Bypass switch to let you easily make sound comparisons.

The equalizer's smooth broad curves makes tonal adjustments easy and fast. You can go from small, subtle changes to extreme carving or boosting up to +/- 18dB per band.  The SUB and AIR frequency bands can give your tracks the chest-thumping punch you want, and that extra sparkle at the top end without sounding harsh. The mid frequencies band takes care of adding that extra bite to your sound to make it pop.

The PEQ-503 Equalizer uses the following:

• A balanced line level receiver using InGenius® high-common mode rejection technology.
• An ultra-low distortion, low noise, operational amplifier optimized for high performance audio is used in the EQ section, along with imported Carnhill inductors from the UK, to perform the musical tone shaping and sculpting of your sound.
• Using OutSmarts technology for the Balanced output driver, thus capable of driving difficult loads, with short-circuit protection.

The PEQ-503 is all about choices. You can outfit the EQ with optional Discrete 2520/990 type op amp*, and an Output Transformer*. You can also request special panels colors*, just email us for availability.  There are also on-board jumpers on the EQ that allows you to experiment and change the Low Frequency and Mid Frequency bands from the factory default setting, to better suit your taste or musical style. Output Bypass jumpers also allow you to change between an active balanced direct output, or transformer output coupling.

Join the other professionals that have discovered the PEQ-503 Equalizer's quality performance. The PEQ-503 is equally at home for use in the mix bus, or individual tracks and channels. You will love it!

FiveFish Audio and the PEQ-503 Equalizer is part of the API VPR Alliance.

The VPR Alliance is a program of standardization and consistency guidelines set by API Audio for manufacturers, to make our products physically fit and electronically conform to API's 500 series rack specifications.  As stated on API's website, "Customers benefit from the VPR Alliance through the elimination of any confusion as to which products are endorsed for placement in API racks. Customers also benefit from a wider range of module choices for their racks, safety in the knowledge that the specification of the third party unit is correct, and that there is no risk of damage occurring. "

PEQ-503 Features:

• 3-Band EQ - Inductor Based EQ
• Two Frequency Selection switch per band + independent flat/bypass position
• 12K/AIR HF control +/- 18dB gain
• 1.1K/3.2K MF control +/- 18dB gain
• SUB/120Hz LF control +/- 18dB gain
• EQ On/Bypass switch
• Relay-controlled Bypass
• Electronically Balanced Inputs using inGenius Technology
• Electronically Balanced Outputs using OutSmarts Technology
• Output Tranformer option
• Discrete OpAmp option, or PDIP chip
• Using Carnhill/UK VTB inductors for LF and MF control
• WIMA caps for EQ filters
• 1% metal resistors
• Bourns Potentiometers
• Solid Machined Aluminum Knobs
• CNC-milled/engraved/paint-filled front panel
• Double-sided, plated through PCBs
• Low Noise Equalizer
• Jumper settings for experimentation, changing the EQ filter frequencies

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