Signal Processors
signal processors — pre-owned
Browse 1,473 signal processors — pre-owned on eBay — listings updated every few minutes. All items are pre-owned and sold by eBay sellers directly.
Phoenix Gold Old School 215 Equalizer
Gold screws and chassis have minimal rust and scratches and scuffs.
Mobridge M2 Connect Interface
Mobridge M2 Connect Interface. Condition is Used. Shipped with USPS Ground Advantage.
Nakamichi NDS6120 12-Channel Car Audio Digital Sound Processor DSP
This DSP was only installed in a Demo Vehicle and shows no signs of use. RCA, Toslink or optional Bluetooth input.
Rockford Fosgate 3Sixty.2 Interactive Signal Processor
Removed from a working installation on Aston Martin. As you can see, the volume control case was removed as everything was done very custom. All parts included are in photos.
AUDIO CONTROL THE EPICENTER BLACK CAR AUDIO DIGITAL BASS RESTORATION 🆓 SHIPPING
Fully functional and great condition. Comes with cable and bass knob The AudioControl The Epicenter Black is a digital equalizer designed specifically for car audio systems. This bass enhancer specifically targets and amplifies low-frequency sounds to provide a more immersive and powerful audio experience. With its sleek black design and easy-to-use interface, this product is perfect for enhancing your car audio system's bass response.
AudioControl LC7i 6 Channel Line Output Converter W/ Accubass, Free Shipping
Fully functional. Comes as seen in the pictures. No accessories included. The AudioControl LC7i 6 Channel Line Output Converter is a high-quality audio device designed for car audio systems. It features an Accubass. With its sleek design and brand reputation of AudioControl, this Line Output Converter is a reliable and versatile option for enhancing your car's audio experience.
AudioControl LC7i 6 Channel Line Output Converter W/ Accubass, Bass Knob & Cable
Fully functional. Comes with bass knob (acr-1) and cable The AudioControl LC7i 6 Channel Line Output Converter is a high-quality audio device designed for car audio systems. It features an Accubass bass knob for customizable bass levels, as well as a cable for easy connectivity. With its sleek design and brand reputation of AudioControl, this Line Output Converter is a reliable and versatile option for enhancing your car's audio experience.
Phoenix Gold Old School Bass Cube
Gold screws and chassis have minimal rust and scratches and scuffs.
Phoenix Gold Old School AX 204A Crossover
Gold screws and chassis have minimal rust and scratches and scuffs.
AudioControl LC2i PRO 2-Channel Active Line Output Converter Driver ACR-1 Knob
Fully functional comes with cable and knob. Item might have some blemishes. The AudioControl LC2i PRO 2-Channel Active Line Output Converter/Line Driver/ACR-1 is a versatile car audio device designed for use in vehicles. Made by AudioControl, a reputable brand in the industry, this remote control signal processor is capable of converting and driving audio signals with precision. The LC2i PRO model is designed in China and comes with a warning about potential cancer and reproductive harm caused by harmful chemicals. This device is ideal for those looking to enhance their car audio system with a reliable and high-quality line output converter.
Audiocontrol EPICENTER PRO Bass Restoration Processor with Line Driver - Used...
THE ORIGINAL DIGITAL BASS RESTORATION PROCESSOR Building on the legendary bass processing of The EPICENTER, The EPICENTER PRO delivers enhanced control for serious bass enthusiasts. Balanced inputs with a built-in line driver, a switchable pfm subsonic filter, and selectable output voltage offer unmatched system flexibility. The included ACR-4 remote provides easy adjustment of The EPICENTER effect and subwoofer level—right from the driver’s seat. FEATURES • AudioControl’s Original Digital Bass Restoration Circuit: Restore missing low notes and transform flat audio into rich, powerful bass you can truly feel.
Kenwood KGC-4032 Black 12V Graphic Equalizer Untested
Not tested
Alpine Old School 3331 Graphic Equalizer EQ 11-Band
Up for sale is a classic Alpine 3331 Equalizer.
Sony XEC-1000 3-Way 5-Channel Ultra SQ Electronic Crossover
SONY XEC-1000 SQ ACTIVE CROSSOVER NETWORK . 5 way - 3 input / 5 output . LOTS OF SETTINGS TO TWEAK YOUR SYSTEM PERFECTLY NO ISSUES WORKS FINE AND HAS BEEN TESTED . BRING YOUR SYSTEM TOO LIFE ALSO THIS A VINTAGE / OLD SCHOOL PEOCE OF EQUIPMENT THIS WAS TOP OF THE LINE BACK IN THE DAY BEFORE DSP AND ORHWR PROCESSORS BECAME A STAPLE THIS WAS THE BEES KNEEES FOR SQ
AudioControl 3XS White 2-Way Electronic Crossover Vintage Concert Series Car SQ
The legendary analog signal processor built in Mountlake Terrace, USA. See pictures for exact condition.
AudioControl EQQ Four Channel Equalizer Subsonic Filter Signal Processor
AudioControl EQQ Four Channel Equalizer Subsonic Filter Signal Processor
Alpine 3347s Equalizer - Tested All Functions Work But Screen Stays Dark - As Is
Alpine 3347s Equalizer - Tested All Functions Work But Screen Stays Dark - As Is. All functions tested and working, however the main screen stays black. Not sure why. Some scuffs mainly on top of the unit. Overall clean. (2.2)
AudioControl LC8i 8 Channel Line Out Converter w/ Auxiliary Input Knob Included
Fully functional. Comes with ACR-3 knob and cable. No other accessories are included The AudioControl LC8i is an 8 channel line out converter with an auxiliary input knob included. This product offers remote control capabilities, making it easy to adjust settings from a distance. The built-in auxiliary RCA input allows for additional connectivity, while the line output converter ensures seamless integration with various audio systems. With its reliable brand name, specific model, and versatile features, the AudioControl LC8i is a top choice for those looking to enhance their car audio experience.
You save $3.33
Rare Precision Power PPI FRX-456 4-Way Active Crossover
Used in good working condition, the amp are been tested and working, the power port missing see the last 2 pictures Tested
Kenwood KGC-4042A Vintage Old School Graphic Equalizer Made in Japan User Item
This is a Kenwood KGC-4042A Stereo Graphic Equalizer. Old School. Made in Japan. From a local estate. Includes the equalizer with short wiring harness seen above. The wiring harness yellow wire is spliced and taped up.
You save $87.49
AudioControl LC7i PRO 6-Channel Line Output Converter/Line Driver w/ACR-1 Remote
Great condition and Fully functional. The AudioControl LC7i PRO is a 6-channel line output converter and line driver designed for car audio systems. It features the ACR-1 remote for convenient control and is manufactured in China by the trusted brand AudioControl. This signal processor is essential for enhancing the audio quality and ensuring compatibility with various audio components in your vehicle. Its California Prop 65 warning reminds users of potential health risks associated with the product. Overall, the AudioControl LC7i PRO is a reliable and high-quality choice for improving your car audio system.
Rockford Fosgate PA 1 HD
DS18 Digital Bass Processor 2 Channel Preamp Input Output Epicenter DBPM100.MX
Upgrade your car audio experience with DS18’s DBPM100 and take your audio to the next level, with deep and impactful bass that will revitalize your system. Although sleek and compact, DS18’s DBPM100 is equipped with a range of impressive features.
Alpine Old School Crossover 3673 Dre 500
It's similar to the DRE 500 model. Unit is 20 plus years old, so scuffs, scratches, adhesive glue, dirts, and dents are presented.
A508 Decoder Box For Eonon Car Stereo GMSX6S2 GMSX7 GMSX7A w/ factory bose Sound
Eonon Car Stereo Bose Amplifier Decoder Adapter – Required for GMSX7 / GMSX6S Car Stereo Installation .
You save $120.00
DS18 4-Input / 8-Output Digital Sound Processor with Bluetooth and App Control
DS18’s i48DSP gives you total command over your sound system! DS18 IXS12.4D Shallow Car Subwoofer 12" 1600W MAX 800W RMS, Dual VC 4+4 Ohms. DS18 FRP-3.5K/RD 1-Channel Amplifier Full-Range Class D 3500W RMS @ 1-ohm.
Phoenix Gold Old School TBA
Gold screws and chassis have minimal rust and scratches and scuffs.
Kenwood KGC-6042A Graphic Equalizer tested and works good. Nice unit
Works good, lights work correctly and don't go on and off. Pm with questions The Kenwood KGC-6042A Graphic Equalizer is a high-quality signal processor that is designed to enhance the audio quality of your car stereo system. Sold as is no returns. Made in Japan, this unit from Kenwood is a reliable and durable option for those looking to improve the sound performance of their vehicle. With a focus on achieving optimal sound quality, this graphic equalizer is a great addition to any car audio setup, allowing users to fine-tune and adjust the audio signal for a more immersive listening experience.
ZEN Audio DSP12A-A2B Car Audio Signal Processor RCA Connectors Model DSP12A-A2B
ZEN Audio DSP12A-A2B Car Audio Signal Processor RCA Connectors Model DSP12A-A2B
JL Audio 98103 FiX-86 OEM Integration Digital Signal Processor
Had it installed for few months till I upgraded to a vx amp. Missing pins $15 fix
AudioControl EXONIC XO 3-Way In-Dash Electronic Crossover w/ Remote Bass Control
AudioControl EXONIC XO 3-Way In-Dash Electronic Crossover w/ Remote Bass Control
Sony XEC-1000 Electronic Crossover Network Car Audio Signal Processor
Sony XEC-1000 Electronic Crossover Network Car Audio Signal Processor
ALPINE PXA-H700 Multimedia Manager DSP Processor Controller Car Audio Japan
Display: OK (with noted LCD discoloration). All buttons and rotary encoder tested and functioning. Output operation verified for F1, F2, and Rear channels. Digital inputs (1-3), Center/Sub. W outputs, and AUTO TCR function could not be tested due to lack of optical cable and microphone.
Kenwood KGC-6042 Equalizer. 9 Bands EQ With Sub Control. made In Japan.
The Kenwood KGC-6042 Equalizer is a high-quality 9 bands EQ with sub control, designed and manufactured in Japan by the renowned brand Kenwood. Fully function and all light on. EQ slider light is orange and other are green. It has been service and change some capacity which not in good condition. Slider is difficult to move by hand as usual of this model. Recommend to use small stock to move slider. ** Rightest triple adjustment slide is not stable as other adjustment as shown in VDO but still can adjust. **. Included harnesses. Kindly check out vdo. Feel free to ask for more information. Happy to answer all questions. Shipping by USPS 7-10 days to door with pre-paid tariff included. No additional fee.
Wavtech link2 - 2-Channel Line Output Converter - Used, Acceptable
If you need a high-quality 2-channel LOC, but don’t require additional features like summing or auxiliary inputs, the link2 is the perfect solution. It is extremely small so it will fit almost anywhere, simplifying installations. Like all our products, it has OEM load detect for factory systems that require resistance to function properly. The link2 will accept up to 40V RMS through its speaker inputs, while delivering up to 10V RMS of output at less than 50 ohms.
DS18 XM3 Full 3-Way Active Crossover (Front/Rear/Sub)
Having the perfect tools to make your sound system the ultimate music machine is what DS18 has for you. Our crossovers are designed to provide the perfect frequency distribution throughout your system to ensure the clarity and peak efficiency for your acoustic.
HiFonics TRITON VII Zed Audio Mantz old school eq equalizer crossover BROKEN
Made in 1989 USA by Zed Audio Steve Mantz. Very hard to find Zed made preamp. BROKEN for parts not-working only! Requires service if you intend to use it. BROKEN for parts not-working only ! You be the judge of condition.
Vintage Audio Control EQL 2-Channel Equalizer Concert Series NEEDS 3 PIN POWER
Condition is Pre-Owned - Great Condition. This unit is in Great shape and works with no issues. This unit needs the 3 pin power plug in order to set it up. The item in the photos is the exact item you will receive when purchasing.
DS18 DSP8.8BT 8-Channel In and 8-Channel Out Digital Sound Processor Bluetooth
DS18 DSP8.8BT Digital Sound Processor with Bluetooth. All New DS18 products are sold with a 1-Year Limited Manufacturer Defect Warranty. DS18 PRO-GRT6BK 6.5" Speaker Grill with Built-in 1.75" Bullet Tweeter 500 Watts.
Xfinity Reference Series Audio System With 610a Amp And (2)x12" Xfinity Subs
610a reference series amp with Xfinity 12" subwoofers for automotive audio system. This is amp and sub enclosure with subs ready to play with red LED accent lighting. • Dynamic Bass Optimization circuit (high-and low-pass filters, variable from 20-40 Hz).