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Lindell Audio PEQ 501A

Item: REC0015501-000
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Passive 3-band equalizer based on the Pultec EQP1a in API 500 series format. Graduated pots.  All product info

€ 579.00
RRP*.: € 685.00,  incl. VAT, incl. Shipping Costs
or extremely cheap from € 10.30 monthly financing
available soon, estimated to be in stock: Mar 2, 2024
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Product information - Lindell Audio PEQ 501A

Equalizer as 500 module

  • Passive 3-band equalizer
  • Extended high frequency range: 1KHz, 1.5KHz, 2KHz, 3KHz, 4KHz, 5KHz, 8KHz, 10KHz, 12KHz, 14KHz, 16KHz
  • Extended low frequency range: 20Hz, 30Hz, 60Hz, 100Hz, 150Hz
  • Based on the Pultec EQP1a
  • Compatible with API 500 series racks
  • Requires 2 module slots
  • Vintage sound based on the 1731 operational amplifier
  • Gold-plated PCB elements
  • True hardware bypass
  • Transformer-coupled, balanced output with transformer
  • Hand-wound coil
  • Stepped knobs
  • Power consumption: 16V
Lindell Audio PEQ 501A 3-Band Equalizer Side View

How it works

The Lindell Audio PEQ 501A equalizer module can handle both very high and very low frequencies and is based on the legendary Pultec EQP1a. By borrowing from the classic 1731 operational amplifier, it is possible to create a vintage sound. The module is compatible with all 500 series racks and requires two module slots. Gold-plated PCB elements and a transformer-coupled balanced output provide a professional sound, making the Equalizer suitable for both mixing and mastering processes.


The module is divided into two sections: On the left side are the low-frequency controls and on the right side are the high-frequency controls. To handle low frequencies, the CPS control is used to set the operating frequency in the range of 20Hz to 150Hz, which can be edited in the amount of boost or cut by the Atten and Boost controls respectively. The editable frequency range for high frequencies is between 1.5kHz and 16kHz. In addition to the changes made by the Boost and Atten controls, the bandwidth and the operating frequency of the Atten control itself can also be set here.


  • Manufacturer: Lindell Audio
  • Amplifier principle: Operational amplifier
  • Operation: Passive
  • Format: Api 500
  • Number of Bands: 3
  • Design: Pultec-Style
  • Fitler type: Shelf
  • Highpass filter: No
  • Lowpass filter: No
  • Band 1: 20 - 150 Hz
  • Band 2: 1 - 16 kHz
  • Band 3: 4 - 20kHz
  • Transformer balanced: Output only
  • Power Adapter: External Frame Required
  • User: Pro
  • Character: Vintage
Lindell Audio PEQ 501A Product ImageLindell Audio PEQ 501A
€ 579.00

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