Why Shop With Us?

Free Shipping

Free Standard Ground shipping (48 contiguous states, some overweight and Used/Vintage items excluded).

Orders placed before 3 p.m. ET usually ship the same business day.

Learn More

2-Year Free Warranty on Guitars

Every guitar or bass you purchase from Musician's Friend (electric or acoustic, New or Open Box) includes two years of protection from manufacturer defects.

Contact Us for Details

We're Here for You

Our Gear Advisers are available to guide you through your entire shopping experience. Call or Chat for expert advice and to hear the latest deals.

Contact Us

Contact Us

Call Now
800-449-9128

Hablamos Español

866.226.2919

Let's Chat
Live Chat

Hours:

MON - FRI 6 AM – 7 PM PT

SAT 7 AM – 6 PM PT

SUN 8 AM – 5 PM PT

Track your order Returns FAQs Make a Card Payment
Empty Cart Icon

Your Cart Is Empty

Sign In < Continue Shopping
Why Shop With Us?
 Spring Sale Up to 60% Off - Call 888-688-0208 or chat for exclusive savings. Spring Sale Up to 60% Off
RewardsBlogHelp

Contact Us

800-449-9128
Cart
Back
Shop by Category
Hot Deals

Help | Call or Chat

 Track your orderReturnsFAQsMake a card paymentWhy shop with us? RewardsBlogHelp
Home Pro Audio Signal Processors

Signal Processors

(162 Items)

  • Direct Boxes

    Direct Boxes

  • Equalizers

    Equalizers

  • Compressors & Limiters

    Compressors & Limiters

  • 500 Series Gear

    500 Series Gear
Clear All
Used Two Notes Engineering Torpedo Captor 8 Exciter
Used Two Notes Engineering Torpedo Captor 8 Exciter
Product Price  $339.99
$399.99
Great Condition
Used Radial Engineering JDI Direct Box
Used Radial Engineering JDI Direct Box
Product Price  $199.99
$249.99
Great Condition
Used Radial Engineering JDI Direct Box
Used Radial Engineering JDI Direct Box
Product Price  $199.99
$249.99
Great Condition
Used Mooer PRIME P1 Multi Effects Processor
Used Mooer PRIME P1 Multi Effects Processor
Product Price  $59.99
$69.99
Great Condition
Used Avalon VT737SP-B Pure Class A Tube Microphone Preamp
Used Avalon VT737SP-B Pure Class A Tube Microphone Preamp
Product Price  $3,099.99
$3,499.99
Great Condition
Used Fractal Audio Axe-FX Multi Effects Processor
Used Fractal Audio Axe-FX Multi Effects Processor
Product Price  $499.99
$599.99
Great Condition
Used MOTU Traveler MK3 Signal Processor
Used MOTU Traveler MK3 Signal Processor
Product Price  $299.99
$325.99
Great Condition
Used TC Helicon VOICE PRO PROFESSIONAL VOICE PROCESSOR Vocal Processor
Used TC Helicon VOICE PRO PROFESSIONAL VOICE PROCESSOR...
Product Price  $2,899.99
$3,500.99
Great Condition
Used Alesis Wedge Desktop Master Reverb w/ Impulse Action Effects Processor
Used Alesis Wedge Desktop Master Reverb w/ Impulse Action...
Product Price  $149.99
$199.99
Great Condition
Used Avalon V5 Pure Class A Mono Channel Strip
Used Avalon V5 Pure Class A Mono Channel Strip
Product Price  $1,049.99
$1,249.99
Great Condition
Used Neewer LIFTER Direct Box
Used Neewer LIFTER Direct Box
Product Price  $39.99
$48.99
Great Condition
Used Manley Variable MU Compressor Compressor
Used Manley Variable MU Compressor Compressor
Product Price  $3,699.99
$4,499.99
Great Condition
Used Lexicon 480L w/ LARC Effects Processor
Used Lexicon 480L w/ LARC Effects Processor
Product Price  $5,699.99
$6,999.99
Great Condition
Used Soundcraft MINI STAGEBOX 32 Signal Processor
Used Soundcraft MINI STAGEBOX 32 Signal Processor
Product Price  $1,499.99
$2,099.99
Great Condition
Used Warm Audio EQP-WA Equalizer
Used Warm Audio EQP-WA Equalizer
Product Price  $569.99
$629.99
Great Condition
Used Art TUBE PAC Compressor
Used Art TUBE PAC Compressor
Product Price  $79.99
$119.99
Great Condition
Used Weiss EQ1DS Equalizer
Used Weiss EQ1DS Equalizer
Product Price  $5,499.99
$7,499.99
Great Condition
Used Summit Audio TLA-50 Compressor
Used Summit Audio TLA-50 Compressor
Product Price  $599.99
$669.99
Great Condition
Used Line 6 POD HD Pro X Multi Effects Processor
Used Line 6 POD HD Pro X Multi Effects Processor
Product Price  $319.99
$350.99
Great Condition
Used Peavey ULTRAVERB II Effects Processor
Used Peavey ULTRAVERB II Effects Processor
Product Price  $99.99
$199.99
Great Condition
Used Inovonics Model 220 Compressor
Used Inovonics Model 220 Compressor
Product Price  $749.99
$849.99
Great Condition
Used Aphex Model 1788 Microphone Preamp
Used Aphex Model 1788 Microphone Preamp
Product Price  $1,099.99
$1,299.99
Great Condition
Used Interphase Carbon Rack Equipment
Used Interphase Carbon Rack Equipment
Product Price  $349.99
$499.99
Great Condition
Used Hughes & Kettner RED BOX MKII Direct Box
Used Hughes & Kettner RED BOX MKII Direct Box
Product Price  $79.99
$99.99
Great Condition
Used Furman hds6 Signal Processor
Used Furman hds6 Signal Processor
Product Price  $290.69
$379.99
Great Condition
Used Apogee aD8000 Signal Processor
Used Apogee aD8000 Signal Processor
Product Price  $429.99
$499.99
Great Condition
Used Peterson AUTOSTROBE
Used Peterson AUTOSTROBE
Product Price  $779.99
$919.99
Great Condition
Used Apogee Big Ben 192k Master Digital Clock
Used Apogee Big Ben 192k Master Digital Clock
Product Price  $419.99
$579.99
Great Condition
Used Four Star Wire & Cable 24 Input Snake Signal Processor
Used Four Star Wire & Cable 24 Input Snake Signal Processor
Product Price  $279.99
$849.99
Great Condition
Used BBE Di100 Direct Box
Used BBE Di100 Direct Box
Product Price  $59.99
$119.99
Great Condition
Used BSS Audio 2x BSS msr-604 Signal Processor
Used BSS Audio 2x BSS msr-604 Signal Processor
Product Price  $319.99
$496.99
Great Condition
Used BBE di 100 Direct Box
Used BBE di 100 Direct Box
Product Price  $69.99
$109.99
Great Condition
Used DOEPFER A-131 VCA Patch Bay
Used DOEPFER A-131 VCA Patch Bay
Product Price  $79.99
$114.99
Great Condition
Used Antelope Audio Isochrone OCX Master Clock Generator Digital Clock
Used Antelope Audio Isochrone OCX Master Clock Generator...
Product Price  $379.99
$499.99
Great Condition
Used BSS Audio MSR-604 Signal Processor
Used BSS Audio MSR-604 Signal Processor
Product Price  $109.99
$199.99
Great Condition
Used Sabine GRAPHI-Q Multi Effects Processor
Used Sabine GRAPHI-Q Multi Effects Processor
Product Price  $29.99
$69.99
Great Condition
Used dbx iEQ-31 Graphic Equalizer
Used dbx iEQ-31 Graphic Equalizer
Product Price  $399.99
$824.99
Great Condition
Used Fractal Audio axe-Fx Multi Effects Processor
Used Fractal Audio axe-Fx Multi Effects Processor
Product Price  $479.99
$549.99
Great Condition
Used BSS Audio MSR-604 Microphone Preamp
Used BSS Audio MSR-604 Microphone Preamp
Product Price  $99.99
$199.99
Great Condition
Used Klark Teknik 76-Kt Compressor
Used Klark Teknik 76-Kt Compressor
Product Price  $389.99
$449.99
Great Condition
Used Art ProSplit High Performance Mic Splitter Microphone Preamp
Used Art ProSplit High Performance Mic Splitter Microphone...
Product Price  $59.99
$69.99
Great Condition
Used Universal Audio UAD-2 Satellite QUAD Signal Processor
Used Universal Audio UAD-2 Satellite QUAD Signal Processor
Product Price  $459.99
$599.99
Great Condition
Used DBX PROFFESSIONAL PRODUCTS MC6 MINI COMP Compressor
Used DBX PROFFESSIONAL PRODUCTS MC6 MINI COMP Compressor
Product Price  $159.99
$169.99
Great Condition
Used Two Notes AUDIO ENGINEERING Torpedo C.A.B. speaker Cab Simulator Signal Processor
Used Two Notes AUDIO ENGINEERING Torpedo C.A.B. speaker Cab...
Product Price  $118.99
$199.99
Great Condition
Used Sabine FBX1020 Feedback Suppressor
Used Sabine FBX1020 Feedback Suppressor
Product Price  $79.99
$139.99
Great Condition
Used Slate Digital VMS One Microphone Preamp
Used Slate Digital VMS One Microphone Preamp
Product Price  $249.99
$349.99
Great Condition
Used Boss CL-50 Compressor
Used Boss CL-50 Compressor
Product Price  $189.99
$350.99
Great Condition
Used BOSS DI1 Direct Box
Used BOSS DI1 Direct Box
Product Price  $89.99
$99.99
Good Condition
Used Solid State Logic SSL X-Rack 8-Slot Rack Equipment
Used Solid State Logic SSL X-Rack 8-Slot Rack Equipment
Product Price  $594.99
$699.99
Good Condition
Used Behringer MDX2200 Compressor
Used Behringer MDX2200 Compressor
Product Price  $129.99
$169.99
Good Condition
Used Art TUBE PREAMP SYSTEM Microphone Preamp
Used Art TUBE PREAMP SYSTEM Microphone Preamp
Product Price  $249.99
$319.99
Good Condition
Used Nady CX22SW Signal Processor
Used Nady CX22SW Signal Processor
Product Price  $69.99
$99.99
Good Condition
Used Peavey ULTRAVERB II Multi Effects Processor
Used Peavey ULTRAVERB II Multi Effects Processor
Product Price  $149.99
$179.99
Good Condition
Used Behringer Composer Pro-XL MDX2600 Compressor
Used Behringer Composer Pro-XL MDX2600 Compressor
Product Price  $409.99
$449.99
Good Condition
Used Washburn weq-15s Equalizer
Used Washburn weq-15s Equalizer
Product Price  $29.99
$49.99
Good Condition
Used QSC dsp-30 Channel Strip
Used QSC dsp-30 Channel Strip
Product Price  $69.99
$79.99
Good Condition
Used MOTU TRAVELER Microphone Preamp
Used MOTU TRAVELER Microphone Preamp
Product Price  $249.99
$324.99
Good Condition
Used DAS AUDIO OF AMERICA DSP-2060A Equalizer
Used DAS AUDIO OF AMERICA DSP-2060A Equalizer
Product Price  $2,199.99
$2,599.99
Good Condition
Used Mooer PRIME P1 Multi Effects Processor
Used Mooer PRIME P1 Multi Effects Processor
Product Price  $47.99
$69.99
Good Condition
Used BOSS CL-50 Compressor
Used BOSS CL-50 Compressor
Product Price  $179.99
$199.99
Good Condition