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 6 AM – 6 PM PT

SUN 8 AM – 5 PM PT

Holiday Hours:

Thanksgiving: Closed

Christmas Eve Hours: 6 AM PT – 3 PM PT

Christmas Day: Closed

New Year’s Eve: 6 AM PT – 4 PM PT

New Year’s Day: Closed

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

Your Cart Is Empty

Sign In < Continue Shopping
Why Shop With Us?
 Kick off the season with holiday deals and accessory coupon savings. For even more discounts, call 888-688-0208 or chat online Holiday Kickoff Sale - Up to 50% off on select gear
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

This season, gift now & pay later with Get Details

Home Pro Audio Signal Processors

Signal Processors

(2244 Items)

  • Direct Boxes

    Direct Boxes

  • Equalizers

    Equalizers

  • Compressors & Limiters

    Compressors & Limiters

  • 500 Series Gear

    500 Series Gear
Oram Used Oram Octasonic 8ch Mic Pre Microphone Preamp
Used Oram Used Oram Octasonic 8ch Mic Pre Microphone Preamp
Product Price  $1,049.99
$1,299.99
Great Condition
TC Electronic Used TC Electronic TRIPLE C Compressor
Used TC Electronic Used TC Electronic TRIPLE C Compressor
Product Price  $289.99
$319.99
Great Condition
Fractal Audio Used Fractal Audio AXE FX ULTRA Multi Effects Processor
Used Fractal Audio Used Fractal Audio AXE FX ULTRA Multi Effects...
Product Price  $449.99
$1,199.99
Great Condition
Calsynth Used Calsynth Ubraids 2 Rack Equipment
Used Calsynth Used Calsynth Ubraids 2 Rack Equipment
Product Price  $159.99
$199.99
Great Condition
Peaks Used Peaks DIY Peaks Rack Equipment
Used Peaks Used Peaks DIY Peaks Rack Equipment
Product Price  $99.99
$129.99
Great Condition
Rocktron Used Rocktron PATCHMATE LOOP 8 Channel Strip
Used Rocktron Used Rocktron PATCHMATE LOOP 8 Channel Strip
Product Price  $249.99
$299.99
Great Condition
Slate Digital Used Slate Digital VMS One Microphone Preamp
Used Slate Digital Used Slate Digital VMS One Microphone Preamp
Product Price  $249.99
$349.99
Great Condition
Focusrite Used Focusrite PLATINUM 8 OCTOPRE Microphone Preamp
Used Focusrite Used Focusrite PLATINUM 8 OCTOPRE Microphone...
Product Price  $399.99
$529.99
Great Condition
Boss Used Boss CL-50 Compressor
Used Boss Used Boss CL-50 Compressor
Product Price  $159.99
$350.99
Great Condition
Boss Used Boss GE-21 Equalizer
Used Boss Used Boss GE-21 Equalizer
Product Price  $119.99
$260.99
Great Condition
Roland Used Roland INTEGRA-7 Multi Effects Processor
Used Roland Used Roland INTEGRA-7 Multi Effects Processor
Product Price  $1,299.99
Great Condition
Radial Engineering Used Radial Engineering Workhorse Powerstrip 500 Series Rack Rack Equipment
Used Radial Engineering Used Radial Engineering Workhorse...
Product Price  $274.99
Great Condition
dbx Used dbx 160x Compressor
Used dbx Used dbx 160x Compressor
Product Price  $224.99
Great Condition
Warm Audio Used Warm Audio WA73-EQ1 Equalizer
Used Warm Audio Used Warm Audio WA73-EQ1 Equalizer
Product Price  $599.99
Great Condition
Warm Audio Used Warm Audio WA-2A Compressor
Used Warm Audio Used Warm Audio WA-2A Compressor
Product Price  $549.99
Great Condition
Cloud Used Cloud Cloudlifter CL-2 Microphone Preamp
Used Cloud Used Cloud Cloudlifter CL-2 Microphone Preamp
Product Price  $149.99
Great Condition
Applied Research & Technology Used Applied Research & Technology ProVerb 200 Effects Processor
Used Applied Research & Technology Used Applied Research &...
Product Price  $39.99
Good Condition
ARP Used 2023 ARP studio v3 Microphone Preamp
Used ARP Used 2023 ARP studio v3 Microphone Preamp
Product Price  $79.99
Good Condition
Alesis Used Alesis Quadraverb Multi Effects Processor
Used Alesis Used Alesis Quadraverb Multi Effects Processor
Product Price  $99.00
Good Condition
Roland Used Roland DEP-5 Multi Effects Processor
Used Roland Used Roland DEP-5 Multi Effects Processor
Product Price  $199.00
Good Condition
ProCo Used ProCo PM148 Patch Bay
Used ProCo Used ProCo PM148 Patch Bay
Product Price  $40.99
Good Condition
Furman Used Furman PB-40 Patch Bay
Used Furman Used Furman PB-40 Patch Bay
Product Price  $29.00
Good Condition
HHB Used HHB RADIUS 20 Equalizer
Used HHB Used HHB RADIUS 20 Equalizer
Product Price  $199.99
Good Condition
DeltaLab Used DeltaLab EFFECTRON ii Effects Processor
Used DeltaLab Used DeltaLab EFFECTRON ii Effects Processor
Product Price  $199.99
Good Condition
DigiTech Used DigiTech GSP2101 Multi Effects Processor
Used DigiTech Used DigiTech GSP2101 Multi Effects Processor
Product Price  $199.00
Good Condition
dbx Used dbx DriveRack PA2 Signal Processor
Used dbx Used dbx DriveRack PA2 Signal Processor
Product Price  $269.99
Good Condition
AUDIO LOGIC Used AUDIO LOGIC MT44 Noise Gate
Used AUDIO LOGIC Used AUDIO LOGIC MT44 Noise Gate
Product Price  $49.99
Good Condition
dbx Used dbx 266 Compressor
Used dbx Used dbx 266 Compressor
Product Price  $59.99
Good Condition
Radial Engineering Used Radial Engineering PRO DI Direct Box
Used Radial Engineering Used Radial Engineering PRO DI Direct...
Product Price  $94.99
Good Condition
TC Helicon Used TC Helicon VoiceLive Vocal Processor
Used TC Helicon Used TC Helicon VoiceLive Vocal Processor
Product Price  $149.99
Good Condition
ART Used Art PRO VLA II Compressor
Used ART Used Art PRO VLA II Compressor
Product Price  $299.99
Good Condition
Gli Used Gli KA3000 Effects Processor
Used Gli Used Gli KA3000 Effects Processor
Product Price  $59.99
Good Condition
dbx Used dbx 266XS Compressor
Used dbx Used dbx 266XS Compressor
Product Price  $61.99
Good Condition
DOD Used DOD 512 REVERB EFFECTS PROCESSOR Effects Processor
Used DOD Used DOD 512 REVERB EFFECTS PROCESSOR Effects Processor
Product Price  $59.99
Good Condition
TC Helicon Used TC Helicon VoiceLive Play Vocal Processor
Used TC Helicon Used TC Helicon VoiceLive Play Vocal Processor
Product Price  $240.99
Good Condition
Dizengoff Audio Used Dizengoff Audio D864 Compressor
Used Dizengoff Audio Used Dizengoff Audio D864 Compressor
Product Price  $599.99
Good Condition
Dizengoff Audio Used Dizengoff Audio D864 Compressor
Used Dizengoff Audio Used Dizengoff Audio D864 Compressor...
Product Price  $599.99
Good Condition
Groove Tubes Used Groove Tubes The Brick Microphone Preamp
Used Groove Tubes Used Groove Tubes The Brick Microphone Preamp
Product Price  $299.99
Good Condition
dbx Used dbx 165A Compressor
Used dbx Used dbx 165A Compressor
Product Price  $899.99
Good Condition
Roland Used Roland VT-3 Vocal Processor
Used Roland Used Roland VT-3 Vocal Processor
Product Price  $139.99
Good Condition