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

(341 Items)

  • Direct Boxes

    Direct Boxes

  • Equalizers

    Equalizers

  • Compressors & Limiters

    Compressors & Limiters

  • 500 Series Gear

    500 Series Gear
Clear All
TC Electronic Used TC Electronic G NATURAL ACOUSTIC GUITAR PROCESSOR Multi Effects Processor
Used TC Electronic Used TC Electronic G NATURAL ACOUSTIC GUITAR...
Product Price  $179.99
$199.99
Great Condition
BSS Audio Used BSS Audio MSR-604 Signal Processor
Used BSS Audio Used BSS Audio MSR-604 Signal Processor
Product Price  $174.99
$199.99
Great Condition
Sabine Used Sabine GRAPHI-Q Multi Effects Processor
Used Sabine Used Sabine GRAPHI-Q Multi Effects Processor
Product Price  $59.99
$69.99
Great Condition
Drawmer Used Drawmer 1960 Microphone Preamp
Used Drawmer Used Drawmer 1960 Microphone Preamp
Product Price  $1,440.99
$1,799.99
Great Condition
Mercury Used Mercury H1 Compressor
Used Mercury Used Mercury H1 Compressor
Product Price  $2,249.99
$2,799.99
Great Condition
Warm Audio Used Warm Audio BUS-COMP Compressor
Used Warm Audio Used Warm Audio BUS-COMP Compressor
Product Price  $539.99
$599.99
Great Condition
Alesis Used Alesis AI-1 Sample Rate Converter Signal Processor
Used Alesis Used Alesis AI-1 Sample Rate Converter Signal...
Product Price  $99.99
$129.99
Great Condition
Universal Audio Used Universal Audio UAD-2 Satellite Quad Core Signal Processor
Used Universal Audio Used Universal Audio UAD-2 Satellite Quad...
Product Price  $269.99
$399.99
Great Condition
Focusrite Used Focusrite ISA220 Microphone Preamp
Used Focusrite Used Focusrite ISA220 Microphone Preamp
Product Price  $849.99
$899.99
Great Condition
Pulse Used Pulse MEQ-5 Equalizer
Used Pulse Used Pulse MEQ-5 Equalizer
Product Price  $2,699.99
$3,399.99
Great Condition
Line 6 Used Line 6 MOD PRO Multi Effects Processor
Used Line 6 Used Line 6 MOD PRO Multi Effects Processor
Product Price  $299.99
$349.99
Great Condition
Rocktron Used Rocktron On-Line Chameleon Multi Effects Processor
Used Rocktron Used Rocktron On-Line Chameleon Multi Effects...
Product Price  $359.99
$399.99
Great Condition
Universal Audio Used Universal Audio LA610 MKII Channel Strip
Used Universal Audio Used Universal Audio LA610 MKII Channel...
Product Price  $1,079.99
$1,199.99
Great Condition
Novation Used Novation Circuit Tracks Exciter
Used Novation Used Novation Circuit Tracks Exciter
Product Price  $269.99
$349.99
Great Condition
AMS Neve Limited Used AMS Neve Limited RMX16 Effects Processor
Used AMS Neve Limited Used AMS Neve Limited RMX16 Effects...
Product Price  $4,659.99
$5,999.99
Great Condition
Avalon Used Avalon VT737SP Class A Mono Tube Microphone Preamp
Used Avalon Used Avalon VT737SP Class A Mono Tube Microphone...
Product Price  $1,799.99
$1,999.99
Great Condition
Radial Engineering Used Radial Engineering JDV Class-A DI Box Direct Box
Used Radial Engineering Used Radial Engineering JDV Class-A DI...
Product Price  $329.99
$399.99
Great Condition
Symetrix Used Symetrix SX205 Exciter
Used Symetrix Used Symetrix SX205 Exciter
Product Price  $34.99
$39.99
Great Condition
Symetrix Used Symetrix SX205 Exciter
Used Symetrix Used Symetrix SX205 Exciter
Product Price  $34.99
$39.99
Great Condition
PreSonus Used PreSonus Digimax LT Microphone Preamp
Used PreSonus Used PreSonus Digimax LT Microphone Preamp
Product Price  $219.99
$249.99
Great Condition
dbx Used Dbx IEQ-31 Graphic Equalizer
Used dbx Used Dbx IEQ-31 Graphic Equalizer
Product Price  $509.99
$824.99
Great Condition
dbx Used Dbx IEQ-31 Graphic Equalizer
Used dbx Used Dbx IEQ-31 Graphic Equalizer
Product Price  $509.99
$824.99
Great Condition
Tc-helicon Used TC-Helicon VoicePro Vocal Processor
Used Tc-helicon Used TC-Helicon VoicePro Vocal Processor
Product Price  $1,619.99
$2,449.99
Great Condition
Rupert Neve Designs Used Rupert Neve Designs 542 500 SERIES Microphone Preamp
Used Rupert Neve Designs Used Rupert Neve Designs 542 500 SERIES...
Product Price  $699.99
$799.99
Great Condition
Rupert Neve Designs Used Rupert Neve Designs 542 500 SERIES Microphone Preamp
Used Rupert Neve Designs Used Rupert Neve Designs 542 500 SERIES...
Product Price  $699.99
$799.99
Great Condition
Lexicon Used Lexicon PCM96 Multi Effects Processor
Used Lexicon Used Lexicon PCM96 Multi Effects Processor
Product Price  $2,119.99
$3,199.99
Great Condition
Bbs Used BBS Fds336 Compressor
Used Bbs Used BBS Fds336 Compressor
Product Price  $349.99
$499.99
Great Condition
Pigtronix Used Pigtronix Gate Keeper Noise Gate
Used Pigtronix Used Pigtronix Gate Keeper Noise Gate
Product Price  $89.99
$99.99
Great Condition
dbx Used Dbx 215S Dual Channel 15-Band Graphic Equalizer
Used dbx Used Dbx 215S Dual Channel 15-Band Graphic Equalizer
Product Price  $189.99
$229.99
Great Condition
Alto Used Alto CLE 8.0 Compressor
Used Alto Used Alto CLE 8.0 Compressor
Product Price  $159.99
$219.99
Great Condition
dbx Used Dbx IEQ-31 DUAL 31 BAND GRAPHIC EQ/limiter Equalizer
Used dbx Used Dbx IEQ-31 DUAL 31 BAND GRAPHIC EQ/limiter...
Product Price  $559.99
$824.99
Great Condition
Golden Age Project Used Golden Age Project PRE 73 JR Microphone Preamp
Used Golden Age Project Used Golden Age Project PRE 73 JR...
Product Price  $229.99
$274.99
Great Condition
Smsl Used SMSL SU6 Signal Processor
Used Smsl Used SMSL SU6 Signal Processor
Product Price  $129.99
$139.99
Great Condition
Klark Teknik Used Klark Teknik 76-KT Compressor
Used Klark Teknik Used Klark Teknik 76-KT Compressor
Product Price  $299.99
$399.99
Great Condition
Joyo Used Joyo Jdi-48 Direct Box
Used Joyo Used Joyo Jdi-48 Direct Box
Product Price  $59.99
$66.99
Great Condition
Zoom Used Zoom AC-2 Acoustic Creator Multi Effects Processor
Used Zoom Used Zoom AC-2 Acoustic Creator Multi Effects...
Product Price  $139.99
$159.99
Great Condition
Joemeek Used Joemeek Meek Box Vc6 Compressor
Used Joemeek Used Joemeek Meek Box Vc6 Compressor
Product Price  $259.99
$329.99
Great Condition
Golden Age Project Used Golden Age Project Pre73 Jr Microphone Preamp
Used Golden Age Project Used Golden Age Project Pre73 Jr...
Product Price  $239.99
$279.99
Great Condition
BSS Audio Used BSS Audio MSR-604 Microphone Preamp
Used BSS Audio Used BSS Audio MSR-604 Microphone Preamp
Product Price  $134.99
$199.99
Great Condition
Universal Audio Used Universal Audio UAD-2 Effects Processor
Used Universal Audio Used Universal Audio UAD-2 Effects...
Product Price  $349.99
$649.99
Great Condition