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?
 Electric Guitar Month! Shop deals & special financing. Call 888-688-0208 or chat for more deals! Electric Guitar Month! Deals & special financing
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

(219 Items)

  • Direct Boxes

    Direct Boxes

  • Equalizers

    Equalizers

  • Compressors & Limiters

    Compressors & Limiters

  • 500 Series Gear

    500 Series Gear
Clear All
Used dbx DRIVERACK VENU360 Signal Processor
Used dbx DRIVERACK VENU360 Signal Processor
Product Price  $369.99
Excellent Condition
Used dbx DRIVERACK VENU360 Signal Processor
Used dbx DRIVERACK VENU360 Signal Processor
Product Price  $369.99
Excellent Condition
Used SPL BIG STEREO IMAGE 500 Rack Equipment
Used SPL BIG STEREO IMAGE 500 Rack Equipment
Product Price  $399.99
Excellent Condition
Used Solid State Logic SSL ULTRAVIOLET EQ 500 Rack Equipment
Used Solid State Logic SSL ULTRAVIOLET EQ 500 Rack...
Product Price  $450.99
Excellent Condition
Used Orange Amplifiers Bass Butler Exciter
Used Orange Amplifiers Bass Butler Exciter
Product Price  $364.99
Great Condition
Used Universal Audio 710TF Microphone Preamp
Used Universal Audio 710TF Microphone Preamp
Product Price  $499.99
Great Condition
Used Universal Audio 710TF Microphone Preamp
Used Universal Audio 710TF Microphone Preamp
Product Price  $499.99
Great Condition
Used Heritage Audio HA-73 Microphone Preamp
Used Heritage Audio HA-73 Microphone Preamp
Product Price  $424.99
Great Condition
Used Focusrite OctoPre LE Microphone Preamp
Used Focusrite OctoPre LE Microphone Preamp
Product Price  $499.99
Great Condition
Used Middle Atlantic UNIVERSAL SEQUENCING CONTROLLER Signal Processor
Used Middle Atlantic UNIVERSAL SEQUENCING CONTROLLER Signal...
Product Price  $349.99
Great Condition
Used Dr Z Air Brake Exciter
Used Dr Z Air Brake Exciter
Product Price  $389.99
Great Condition
Used TC Electronic G major 2 Multi Effects Processor
Used TC Electronic G major 2 Multi Effects Processor
Product Price  $379.99
Great Condition
Used FMR Audio RNC1773 Compressor
Used FMR Audio RNC1773 Compressor
Product Price  $384.99
Great Condition
Used Solid State Logic VHD+ Microphone Preamp
Used Solid State Logic VHD+ Microphone Preamp
Product Price  $449.99
Great Condition
Used Warm Audio WA12 Microphone Preamp Microphone Preamp
Used Warm Audio WA12 Microphone Preamp Microphone Preamp
Product Price  $304.99
Great Condition
Used Chameleon Labs 7720 Compressor
Used Chameleon Labs 7720 Compressor
Product Price  $499.99
Great Condition
Used TC Helicon VoiceLive Vocal Processor
Used TC Helicon VoiceLive Vocal Processor
Product Price  $349.99
Great Condition
Used TC Helicon VoicePrism Plus Vocal Processor
Used TC Helicon VoicePrism Plus Vocal Processor
Product Price  $339.99
Great Condition
Used Chameleon Labs 7720 Compressor
Used Chameleon Labs 7720 Compressor
Product Price  $449.99
Great Condition
Used Dizengoff D4 Microphone Preamp
Used Dizengoff D4 Microphone Preamp
Product Price  $449.99
Great Condition
Used dbx Driverack 260 Crossover
Used dbx Driverack 260 Crossover
Product Price  $499.99
Great Condition
Used FMR Audio RNC1773 Compressor
Used FMR Audio RNC1773 Compressor
Product Price  $369.99
Great Condition
Used TC Helicon VoiceLive Rack Vocal Processor
Used TC Helicon VoiceLive Rack Vocal Processor
Product Price  $479.99
Great Condition
Used Trident Audio 80B EQ Rack Equipment
Used Trident Audio 80B EQ Rack Equipment
Product Price  $329.99
Great Condition
Used Art Pro MPA-II Microphone Preamp
Used Art Pro MPA-II Microphone Preamp
Product Price  $399.99
Great Condition
Used dbx 555 5-BAND PARA EQ Rack Equipment
Used dbx 555 5-BAND PARA EQ Rack Equipment
Product Price  $449.99
Great Condition
Used Rocktron PROPHESY Multi Effects Processor
Used Rocktron PROPHESY Multi Effects Processor
Product Price  $379.99
Great Condition
Used Panamax M5300PM Signal Processor
Used Panamax M5300PM Signal Processor
Product Price  $399.99
Great Condition
Used Seymour Duncan PowerStage 200
Used Seymour Duncan PowerStage 200
Product Price  $449.99
Great Condition
Used dbx DriveRack PA2 Signal Processor
Used dbx DriveRack PA2 Signal Processor
Product Price  $499.99
Great Condition
Used Klark Teknik 2A-KT Compressor
Used Klark Teknik 2A-KT Compressor
Product Price  $349.99
Great Condition
Used Universal Audio UAD-2 SATELLITE FOR WINDOWS Vocal Processor
Used Universal Audio UAD-2 SATELLITE FOR WINDOWS Vocal...
Product Price  $449.99
Great Condition
Used TC Helicon VoiceLive Vocal Processor
Used TC Helicon VoiceLive Vocal Processor
Product Price  $399.99
Great Condition
Used Ashly Audio PROTEA SYSTEM II 3.24CL Equalizer
Used Ashly Audio PROTEA SYSTEM II 3.24CL Equalizer
Product Price  $399.99
Great Condition
Used Acme Audio Mfg Co Motown D.I. WB-3 Direct Box
Used Acme Audio Mfg Co Motown D.I. WB-3 Direct Box
Product Price  $399.99
Great Condition
Used Moog DFAM Exciter
Used Moog DFAM Exciter
Product Price  $459.99
Great Condition
Used API 500-6B LUNCHBOX Rack Equipment
Used API 500-6B LUNCHBOX Rack Equipment
Product Price  $449.99
Great Condition
Used Radial Engineering Q3 500 SERIES EQ Equalizer
Used Radial Engineering Q3 500 SERIES EQ Equalizer
Product Price  $349.99
Great Condition
Used Focusrite ISA One Analogue Microphone Preamp
Used Focusrite ISA One Analogue Microphone Preamp
Product Price  $459.99
Great Condition
Used FMR Audio RNLA Compressor
Used FMR Audio RNLA Compressor
Product Price  $479.99
Great Condition
Used FMR Audio RNC Compressor
Used FMR Audio RNC Compressor
Product Price  $479.99
Great Condition
Used Fmr RNC Compressor
Used Fmr RNC Compressor
Product Price  $479.99
Great Condition
Used ENGL CABLOADER Multi Effects Processor
Used ENGL CABLOADER Multi Effects Processor
Product Price  $349.99
Great Condition
Used Heritage Audio R.A.M 1000 Multi Effects Processor
Used Heritage Audio R.A.M 1000 Multi Effects Processor
Product Price  $429.99
Great Condition
Used Marani DPA2655QR Signal Processor
Used Marani DPA2655QR Signal Processor
Product Price  $349.99
Great Condition
Used Warm Audio WA12 Microphone Preamp
Used Warm Audio WA12 Microphone Preamp
Product Price  $304.99
Great Condition
Used Black Lion Audio Seventeen 500 Rack Equipment
Used Black Lion Audio Seventeen 500 Rack Equipment
Product Price  $414.99
Great Condition
Used Trident Audio 80B EQ Rack Processor Equalizer
Used Trident Audio 80B EQ Rack Processor Equalizer
Product Price  $344.99
Great Condition
Used Trident Audio 80B EQ Rack Processor Equalizer
Used Trident Audio 80B EQ Rack Processor Equalizer
Product Price  $344.99
Great Condition
Used Novation KOMPLETE S61 MK2 Patch Bay
Used Novation KOMPLETE S61 MK2 Patch Bay
Product Price  $364.99
Great Condition
Used Biamp MR / 140 Professional Reverb Effects Processor
Used Biamp MR / 140 Professional Reverb Effects Processor
Product Price  $334.99
Great Condition
Used Positive Grid BIAS RACK PROCESSOR Multi Effects Processor
Used Positive Grid BIAS RACK PROCESSOR Multi Effects...
Product Price  $419.99
Great Condition
Used Yamaha SPX900 Effects Processor
Used Yamaha SPX900 Effects Processor
Product Price  $379.99
Great Condition
Used Link Audio Design slq51x Pink Rack Equipment
Used Link Audio Design slq51x Pink Rack Equipment
Product Price  $469.99
Great Condition
Used Zoom TAC-8 Exciter
Used Zoom TAC-8 Exciter
Product Price  $319.99
Great Condition
Used Behringer 369 DISCRETE PRECISON Compressor
Used Behringer 369 DISCRETE PRECISON Compressor
Product Price  $474.99
Great Condition
Used dbx DriveRack PA2 Signal Processor
Used dbx DriveRack PA2 Signal Processor
Product Price  $499.99
Great Condition
Used Groove Tubes THE BRICK Microphone Preamp
Used Groove Tubes THE BRICK Microphone Preamp
Product Price  $499.99
Great Condition
Used Vois Vocoder 15 Channel vois Modular Multi Effects Processor
Used Vois Vocoder 15 Channel vois Modular Multi Effects...
Product Price  $499.99
Great Condition
Used Bosch PLM8M8 Microphone Preamp
Used Bosch PLM8M8 Microphone Preamp
Product Price  $499.99
Great Condition