Availability: Out Of Stock

Universal Sound Processor for integrating factory installed head units (OE sources) with aftermarket amplifiers and speakers.

The DEQ-S1000A is an innovative approach to overcome the effects of an OE audio system’s pre-set EQ. Featuring both high level and low level inputs plus DSP-based OE pre-set EQ cancellation, the DEQ-S1000A is unique in how it leverages Pioneer’s software expertise and smartphone integration experience to harness the processing power and touchscreen user interface of a connected iPhone or Android smartphone. This advanced design improves performance and ease of use while minimizing the need for ultra high-cost components. Pioneer engineers have also implemented advanced post-correction sound controls like a 31-band touch EQ, digital time alignment, 3-way digital network with subwoofer control, hi-volt preamp outputs, an internal MOSFET 50W x4 amplifier and more to provide expanded system flexibility and control.

The Pioneer DEQ-S1000A connects to your smartphone and Pioneer’s Sound Tune app to perform the advanced calculations needed to digitally analyze and correct the factory pre-set equalization and provide a touchscreen interface for simple, intuitive controls. Download the Pioneer Sound Tune app free of charge.

  • Pioneer Sound Tune App Compatible
  • USB Input1
  • Maximum Power Input 4 x 50 W
  • Frequency Response 10Hz to 20kHz
  • S/N Ratio 105dB
  • Max. Current Consumption 10A
  • Chasis Size (W x H x D)6-3/4" x 1-5/8" x 3-3/4"
  • Unit Weight 1 lbs / 4.8oz
  • Made for iPhone
  • Supported FunctionsBattery Charging, Music Playback
  • Compatible with Android
  • Quick Charge for Android
  • Equalizer
  • 13-Band Graphical EQ, (31-Band with Pioneer Smart Tune app)
  • MOSFET 50 W x 4 Amplifier
  • Network Mode 3-Way Network Mode
  • Listening Position Selector
  • High Pass Filter
  • Low Pass Filter
  • Subwoofer Control
  • RCA Pre-Outs3 (4V)
  • High Level/Low Level
  • 2
  • High Voltage Output (4V)
  • Exclusive Designed Audio Parts.
  • FLAC
  • RCA Terminals
  • Speaker Line Input Sensor
  • Included

How To Use:

Car Icon

Step 1: Select Your Vehicle

Select Icon

Step 2: Select A Product Category

Browse Icon

Step 3: Browse Products That Fit Your Ride

Shipping Options

U.S. 48 Only

For all items eligible for shipping:

FREE: 1-5 Business Days UPS

Expedited Shipping Options: Calculated At Checkout

Large Item Shipping Costs: Calculated At Checkout

Return Policy

Our policy lasts 30 days. If 30 days or less have gone by since your purchase, we are happy to issue a refund or exchange.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.


Non-returnable items:

Gift cards

Installed Products


To complete your return, we require a receipt or proof of purchase.

Please do not send your purchase back to the manufacturer.


There are certain situations where only partial refunds are granted (if applicable):

Any item not in its original condition, is damaged or missing parts for reasons not due to our error

Any item that is returned more than 30 days after delivery


Refunds (if applicable):

Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.

If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.


Late or missing refunds (if applicable)

If you haven’t received a refund yet, first check your bank account again.

Then contact your credit card company, it may take some time before your refund is officially posted.

Next contact your bank. There is often some processing time before a refund is posted.

If you’ve done all of this and you still have not received your refund yet, please contact us at social@freemanscarstereo.com.


Sale items (if applicable)

Only regular priced items may be refunded, unfortunately sale items cannot be refunded.


Exchanges (if applicable)

We only replace items if they are defective or damaged.  If you need to exchange it for the same item, send us an email at social@freemanscarstereo.com and send your item to: 19010 Statesville Rd Cornelius North Carolina US 28031.



If the item was marked as a gift when purchased and shipped directly to you, you’ll receive a gift credit for the value of your return. Once the returned item is received, a gift certificate will be mailed to you.


If the item wasn’t marked as a gift when purchased, or the gift giver had the order shipped to themselves to give to you later, we will send a refund to the gift giver and he will find out about your return.



To return your product, you should mail your product to: 19010 Statesville Rd Cornelius North Carolina US 28031


You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.

To reach customer service please email info@freemanscarstereo.com


Depending on where you live, the time it may take for your exchanged product to reach you, may vary.


If you are shipping an item over $75, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item.