Signal Processors

signal processors — pre-owned

1,285listings

Browse 1,285 signal processors — pre-owned on eBay — listings updated every few minutes. All items are pre-owned and sold by eBay sellers directly.

Black Diamond 7-Band Stereo Equalizer/Crossover Pre Amp Equalizer - EQ7LS
CERTIFIED - REFURBISHED

Black Diamond 7-Band Stereo Equalizer/Crossover Pre Amp Equalizer - EQ7LS

$22.46
Orion 400 BDG Car Audio Line Driver Bass Gain Controller w/ Cable Made in USA
USED

Orion 400 BDG Car Audio Line Driver Bass Gain Controller w/ Cable Made in USA

$179.99
jl audio clean sweep CL441 Dsp
USED

jl audio clean sweep CL441 Dsp

$225.00
Mosconi Atomo 4/6 Digital Sound Processor
USED

Mosconi Atomo 4/6 Digital Sound Processor

$425.00
OLD SCHOOL PHOENIX GOLD BASSCUBE WITH REMOTE, CORD, AND PLUG WORKS PERFECTLY
USED

OLD SCHOOL PHOENIX GOLD BASSCUBE WITH REMOTE, CORD, AND PLUG WORKS PERFECTLY

$399.99
Audiocontrol EPICENTER PRO Bass Restoration Processor with Line Driver - Used...
USED

Audiocontrol EPICENTER PRO Bass Restoration Processor with Line Driver - Used...

$179.00
Rare VTG 80s Magnadyne Graphic Equalizer Car Stereo Pre-Amp 10 Band LED VU Audio
FOR PARTS OR NOT WORKING

Rare VTG 80s Magnadyne Graphic Equalizer Car Stereo Pre-Amp 10 Band LED VU Audio

$219.95
DS18 XM3 Full 3-Way Active Crossover (Front/Rear/Sub)
-13%
CERTIFIED - REFURBISHED

DS18 XM3 Full 3-Way Active Crossover (Front/Rear/Sub)

$76.95
DS18 EQX7PRO Car Stereo Equalizer/Crossover  High Volt 7-Band Auto Turn On
CERTIFIED - REFURBISHED

DS18 EQX7PRO Car Stereo Equalizer/Crossover High Volt 7-Band Auto Turn On

$79.89
AudioControl THREE.1 In-dash equalizer with 2-way crossover And Line Driver
USED

AudioControl THREE.1 In-dash equalizer with 2-way crossover And Line Driver

$399.99
KICKER 47KEYLOC DSP Smart Powered Line Output Converter - Black
USED

KICKER 47KEYLOC DSP Smart Powered Line Output Converter - Black

$119.95
DS18 Digital Bass Processor 2 Channel Preamp Input Output Epicenter DBPM100.MX
CERTIFIED - REFURBISHED

DS18 Digital Bass Processor 2 Channel Preamp Input Output Epicenter DBPM100.MX

$109.00
Kicker 47KEYLOC Key Series Smart Powered Line-Out Converter - Used, Open Box
USED

Kicker 47KEYLOC Key Series Smart Powered Line-Out Converter - Used, Open Box

$127.49
Lanzar CX3 Crossover (vintage)
USED

Lanzar CX3 Crossover (vintage)

$100.00
DS18 DSP4.8BTM 4-Channel In and 8-Channel Out Digital Sound Processor Car Audio
CERTIFIED - REFURBISHED

DS18 DSP4.8BTM 4-Channel In and 8-Channel Out Digital Sound Processor Car Audio

$206.95
Alpine ERA-G320 Sound Field Processor DSP Equalizer Complete Tested Working Rare
USED

Alpine ERA-G320 Sound Field Processor DSP Equalizer Complete Tested Working Rare

$2500.00
DS18 EQX5 8 Volts 5-Band Equalizer with High Level Input - Adjustable Bass
-14%
CERTIFIED - REFURBISHED

DS18 EQX5 8 Volts 5-Band Equalizer with High Level Input - Adjustable Bass

$47.32
Alpine RUX-C701 + PXA-H701 Digital Sound Processor DSP Set Car Audio Tested Good
USED

Alpine RUX-C701 + PXA-H701 Digital Sound Processor DSP Set Car Audio Tested Good

$378.99
DS18 Digital Bass Processor With Hi to Low Signal Converter & Speaker Emulator
CERTIFIED - REFURBISHED

DS18 Digital Bass Processor With Hi to Low Signal Converter & Speaker Emulator

$142.00
AudioControl LC8i 8 Channel Line Out Converter w/ Auxiliary Input Knob Included
USED

AudioControl LC8i 8 Channel Line Out Converter w/ Auxiliary Input Knob Included

$139.99
COUSTIC XM-1e Mobile Electronic Crossover
USED

COUSTIC XM-1e Mobile Electronic Crossover

$60.00
Vintage 1990s Alpine 3331 Old School 11-Band Graphic Equalizer Pre-Amplifier
USED

Vintage 1990s Alpine 3331 Old School 11-Band Graphic Equalizer Pre-Amplifier

$299.90
Marts Digital 8 Channel Output 32Bits 96KHz Bluetooth DSP / BTX8-DSP (Z19)
FOR PARTS OR NOT WORKING

Marts Digital 8 Channel Output 32Bits 96KHz Bluetooth DSP / BTX8-DSP (Z19)

$60.00
DS18 XM5 5-Way Active Crossover
CERTIFIED - REFURBISHED

DS18 XM5 5-Way Active Crossover

$179.96
Audio Dynamics DSP68AT Digital Signal Processor for 6 IN and 8 OUT
USED

Audio Dynamics DSP68AT Digital Signal Processor for 6 IN and 8 OUT

$289.00
HELIX DSP PRO MK2 10-Channel Digital Processor High Resolution Tested Used
USED

HELIX DSP PRO MK2 10-Channel Digital Processor High Resolution Tested Used

$768.40
Sony XE-90 MKII Equalizer w/ Subwoofer Control full working condition
USED

Sony XE-90 MKII Equalizer w/ Subwoofer Control full working condition

$199.99
Eclipse EQ1000 Old School Car Equalizer Pre Amp eq1000
USED

Eclipse EQ1000 Old School Car Equalizer Pre Amp eq1000

$260.00
Xfinity Reference Series Audio System With 610a Amp And (2)x12" Xfinity Subs
USED

Xfinity Reference Series Audio System With 610a Amp And (2)x12" Xfinity Subs

$200.00
JL Audio FIX82 Integration Signal Processor Read Description
-7%
USED

JL Audio FIX82 Integration Signal Processor Read Description

$100.99
DS18 Digital Bass Processor With Hi to Low Signal Converter & Speaker Emulator
CERTIFIED - REFURBISHED

DS18 Digital Bass Processor With Hi to Low Signal Converter & Speaker Emulator

$171.00
Numark EB-600 Vintage Car Equalizer Booster Made in Japan Estate Item Project
-15%
FOR PARTS OR NOT WORKING

Numark EB-600 Vintage Car Equalizer Booster Made in Japan Estate Item Project

$76.46
kicker model X4500-4 12 db crossover-RARE VINTAGE COLLECTIBLE-Ships N 24 HRS-NEW
USED

kicker model X4500-4 12 db crossover-RARE VINTAGE COLLECTIBLE-Ships N 24 HRS-NEW

$30.00
Audio Control The Epicenter Concert Series Digital Reconstruction Processor
USED

Audio Control The Epicenter Concert Series Digital Reconstruction Processor

$109.99
AudioControl EQX 13-band equalizer with crossover 2.3 khz chip for Active setups
USED

AudioControl EQX 13-band equalizer with crossover 2.3 khz chip for Active setups

$225.00
VTG AudioControl Epic-150 Epicenter BASS Processor Enhancer Digital SPL Meter
FOR PARTS OR NOT WORKING

VTG AudioControl Epic-150 Epicenter BASS Processor Enhancer Digital SPL Meter

$289.95
DS18 EQX7 8 Volt 7 Band 1/2 Din Car Stereo Equalizer Subwoofer Speaker Control
-35%
CERTIFIED - REFURBISHED

DS18 EQX7 8 Volt 7 Band 1/2 Din Car Stereo Equalizer Subwoofer Speaker Control

$68.10
Kenwood Old School KGC-4042A Baby Kenwood Graphic Equalizer kgc4042a
USED

Kenwood Old School KGC-4042A Baby Kenwood Graphic Equalizer kgc4042a

$200.00
PAC LPA-E.4 Line Output Converter
USED

PAC LPA-E.4 Line Output Converter

$82.99
DS18 DSP8.8BT 8-Channel In and 8-Channel Out Digital Sound Processor Bluetooth
CERTIFIED - REFURBISHED

DS18 DSP8.8BT 8-Channel In and 8-Channel Out Digital Sound Processor Bluetooth

$282.00