JDK R24 Dual Channel 4 Band EQ - API

1,266.00 (including VAT @ 23%)

Available for orderDelivery Information

Item available to order

This item is available to order, and we do not currently have the item in stock.

When you place your order, we will request the item from our supplier as soon as possible. We will dispatch this product to you as soon as it is received from our supplier.

"Estimated delivery to you" is our estimate of when we will be able to deliver the product to you, based on our supplier's normal delivery timescales. If we become aware it is going to take significantly longer than normal to deliver this item, we will let you know, otherwise, we will advise by email or text message when the item has been dispatched from our distribution centre.

Estimated delivery to you: 2nd November 2016
FREE Delivery available.

Add to Basket

30 day money back guarantee included

30 day money back guarantee included

Once the product is delivered, you have 30 days to decide that you definitely want to keep it. If you decide it is not suitable for any reason, you can return it back to us for replacement or full refund, including standard delivery charges.

All Products are new unless stated, and include a minimum of one year warranty.

Some items are only eligible for money back guarantee if they are returned to us unused and sealed in the original packaging, and in the case of software, unregistered. These items include:

  • Software
  • CDs & DVDs
  • In-ear Monitors
  • Earplugs and Ear Protection
  • Mouthpieces, Reeds etc… for Woodwind and Brass instruments
  • Mouth / Lip Care Products

We are unable to accept returns of any custom made items designed to work together as a unique package, such as computer system built to a customer’s personal specifications. Exceptions may only be possible with prior agreement of the vendor, and may be subject to a cancellation fee.

Optional: 3 year warranty: €63.50
(Includes 60 day money back guarantee)


The product price includes a one year warranty and 30 day money back guarantee.

However, the Gear4music extended warranty scheme provides an enhanced service, and is designed to offer a higher level of protection than many 'free' warranties offered by some retailers and manufacturers.

The highlights of this enhanced warranty service are:

  • Warranty is extended to 3 years from the date of delivery.
  • Our Money Back guarantee is extended from 30 days to 60 days (terms apply after 30 days)
  • Collection and delivery costs are included for the first two years
  • Claim 50% cash back on the cost of the policy after 3 years if it has not been used!
  • Warranty is transferable if the item is re-sold
  • Loan or replacement equipment will be provided if the product isn't repaired within 30 days
  • If an item can not be repaired, a similar alternative product or cash discount (as defined in this policy) will be offered
  • The policy can be cancelled within 30 days, and at any time after that for a pro-rata discount

Please note that this extended warranty is currently only available on products sold within the EU or EEA, and is subject to the terms and conditions as detailed on the extended warranty certificate provided.

For customers in outlying areas of the country, the price of the Extended Warranty may be marginally higher, due to the potential for higher collection and redelivery transport costs.

This enhanced warranty is in addition to the standard Gear4music and manufacturer warranty policies, and the Gear4music terms and conditions of trade. No statement or condition of sale contained within these terms affects or restricts your statutory rights as defined under the Consumer Contracts Regulation 2014.

Product Ref: 61747

  • Rackmountable Frame
  • Modeled After APSI 562 EQ
  • Balanced 1/4 '' and XLR Inputs/Outputs
  • 12dB of Boost/Cut Per Band
  • Custom Transformer Balanced Output

JDK R24 Dual Channel 4 Band EQ - API

The JDK R24 Dual Channel 4 Band EQ features two channels of euqalization in a rackmountable unit with internal power supply. With both channels offering identical professional signal equalization, the R24 is versatile as well as durable. Each EQ Band offers continuously variable control over frequency and gain parameters, giving you extra versatility when it comes to manipulating audio. Modeled after the circuitry of the classic APSI 562 EQ and with fully balanced 1/4" and XLR inputs and outputs, this unit delivers a high quality sound output at an affordable price range.

Product Ref: 61747

View Full Description

Full Description

View Full Description

A Brief History Of JDK Audio

JDK Audio is a brand developed and engineered by API (Automated Processes, Inc.), a company that has been around since the late 1960s. While API has a stellar range of audio products that are benchmarks of the recording world, JDK Audio decided to embark on a product line that would allow their engineering team to develop new ideas that they have been wanting to put into motion for many years.

With API's stellar reputation in the professional audio world, JDK Audio was born out of a desire to expand the creative options available at API with no boundaries and restrictions, enabling them to make these new ideas come to fruition.


  • 2U rackmountable
  • 4 bands of equalization modeled after the classic APSI model 562 EQ
  • Each band offers continuously variable control of frequency and gain
  • 12dB of boost/cut per band
  • All 4 bands are peak/dipping parametric configuration
  • Custom transformer balanced output
  • Fully balanced 1/4" and XLR input and output
  • High headroom +24dB clip level


  • Inputs: Balanced XLR and 1/4" parallel jacks
  • Outputs: Transformer Balanced XLR and 1/4" parallel jacks (All measurements with 600 Ohm output load)
  • Power Consumption, Quiescent: 5.06 Watts
  • Bandwidth: +/- 0.5 dB, 20 Hz - 20 kHz
  • THD+N @ 1 kHz, +4 dBu: 0.01
  • Maximum Level: +23 dBu
  • Signal-to-Noise Ratio: -100 dB
  • EQ Bands: 4 bands, all +/-12 dB Peak/Dip type
  • Q Range: from 0.60 to 0.85 with boost/cup from 0 to +/-12dB
  • Lo: 20 Hz - 200 Hz
  • Lo-Mid: 100 Hz - 1 kHz
  • Hi-Mid: 500 Hz - 5 kHz
  • Hi: 2 kHz - 20 kHz

For more information on the R24 please refer to the PDF above.