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?
 Flash Sale ends today! Call 888-688-0208 or chat for exclusive savings. Flash Sale ends today! Call 888-688-0208 or chat for exclusive savings.
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

(446 Items)

  • Direct Boxes

    Direct Boxes

  • Equalizers

    Equalizers

  • Compressors & Limiters

    Compressors & Limiters

  • 500 Series Gear

    500 Series Gear
Clear All
Yorkville dADB Dual Active Direct Box
Yorkville dADB Dual Active Direct Box
0 of 5 stars
Product Price  $94.99
Shure RPM626 In-Line Preamp for Shure BETA Series
Shure RPM626 In-Line Preamp for Shure BETA Series
1.0 of 5 stars (1)
Product Price  $58.70
ART TPatch Eight Point Patch Bay
ART TPatch Eight Point Patch Bay
0 of 5 stars
Product Price  $66.99
Klark Teknik DI 10A Active Direct Box
Klark Teknik DI 10A Active Direct Box
0 of 5 stars
Product Price  $54.90
Klark Teknik DI 10P Passive Direct Box
Klark Teknik DI 10P Passive Direct Box
0 of 5 stars
Product Price  $57.90
Palmer Audio Palmer Audio PLI-06 Line Level Converter 2-In 1-Out
Palmer Audio Palmer Audio PLI-06 Line Level Converter 2-In...
0 of 5 stars
Product Price  $99.99
Palmer Audio PAN 02 Active Direct Box
Palmer Audio PAN 02 Active Direct Box
0 of 5 stars
Product Price  $89.99
Palmer Audio PAN 01 Passive Direct Box
Palmer Audio PAN 01 Passive Direct Box
0 of 5 stars
Product Price  $69.99
ART PROSPLIT PROSPLIT HIGH PERFORMANCE MIC SPLITTER
ART PROSPLIT PROSPLIT HIGH PERFORMANCE MIC SPLITTER
0 of 5 stars
Product Price  $99.99
ProCo DB-1 Direct Box
ProCo DB-1 Direct Box
4.0 of 5 stars (27)
Product Price  $79.99
Rupert Neve Designs Half Rack Joining Kit
Rupert Neve Designs Half Rack Joining Kit
0 of 5 stars
Product Price  $69.95
Used Alesis Nanoverb II Effects Processor
Used Alesis Nanoverb II Effects Processor
Product Price  $79.99
Excellent Condition
Used Hughes & Kettner RED BOX 5 Direct Box
Used Hughes & Kettner RED BOX 5 Direct Box
Product Price  $59.99
Excellent Condition
Used Cloud Cloudlifter CL-1 Microphone Preamp
Used Cloud Cloudlifter CL-1 Microphone Preamp
Product Price  $99.99
Excellent Condition
Used DigiTech JMVXT-V Jam Man Vocal XT Vocal Processor
Used DigiTech JMVXT-V Jam Man Vocal XT Vocal Processor
Product Price  $59.99
Excellent Condition
Used dbx 131 Single 31-Band Graphic Equalizer
Used dbx 131 Single 31-Band Graphic Equalizer
Product Price  $99.99
Excellent Condition
Used dbx 166XL Dual Compressor
Used dbx 166XL Dual Compressor
Product Price  $66.99
Excellent Condition
Used dbx 166XL Dual Compressor
Used dbx 166XL Dual Compressor
Product Price  $66.99
Excellent Condition
Used Behringer space fx Multi Effects Processor
Used Behringer space fx Multi Effects Processor
Product Price  $70.99
Excellent Condition
Used Radial Engineering PRO DI PASSIVE DIRECT BOX Direct Box
Used Radial Engineering PRO DI PASSIVE DIRECT BOX Direct...
Product Price  $99.99
Excellent Condition
Used TC Helicon Talkbox Vocal Processor
Used TC Helicon Talkbox Vocal Processor
Product Price  $99.99
Excellent Condition
Used PreSonus 900BTDP Blue Tube DP Microphone Preamp
Used PreSonus 900BTDP Blue Tube DP Microphone Preamp
Product Price  $99.99
Excellent Condition
Used Cloud Cloudlifter CL-1 Microphone Preamp
Used Cloud Cloudlifter CL-1 Microphone Preamp
Product Price  $99.99
Excellent Condition
Used Warm Audio warm lifter Exciter
Used Warm Audio warm lifter Exciter
Product Price  $99.99
Excellent Condition
Used Triton KOMPRESSOR Compressor
Used Triton KOMPRESSOR Compressor
Product Price  $79.99
Excellent Condition
Used 2010s Focusrite Liquid Mix 16 Compressor
Used 2010s Focusrite Liquid Mix 16 Compressor
Product Price  $99.99
Excellent Condition
Used Nady GEQ 231 Equalizer
Used Nady GEQ 231 Equalizer
Product Price  $89.99
Excellent Condition
Used Rolls HRS84 Signal Processor
Used Rolls HRS84 Signal Processor
Product Price  $99.99
Excellent Condition
Used 2020s Soundtools CAT BOX MX Signal Processor
Used 2020s Soundtools CAT BOX MX Signal Processor
Product Price  $99.99
Excellent Condition
Used 2020s Soundtools CAT BOX MX Signal Processor
Used 2020s Soundtools CAT BOX MX Signal Processor
Product Price  $99.99
Excellent Condition
Used Neutrik NYS-SPPL Patch Bay
Used Neutrik NYS-SPPL Patch Bay
Product Price  $74.99
Excellent Condition
Used Acoustic PBISO8 Patch Bay
Used Acoustic PBISO8 Patch Bay
Product Price  $74.99
Excellent Condition
Used TC Helicon T1 Vocal Processor
Used TC Helicon T1 Vocal Processor
Product Price  $89.99
Excellent Condition
Used Cloud Cloudlifter CL-1 Microphone Preamp
Used Cloud Cloudlifter CL-1 Microphone Preamp
Product Price  $99.99
Excellent Condition
Used DOD SR830QXLR Dual 15-Band Equalizer
Used DOD SR830QXLR Dual 15-Band Equalizer
Product Price  $99.99
Excellent Condition
Used Crate SM4 CL Compressor
Used Crate SM4 CL Compressor
Product Price  $59.99
Excellent Condition
Used Hosa MXL-369 Patch Bay
Used Hosa MXL-369 Patch Bay
Product Price  $69.99
Excellent Condition
Used American DJ Pow-r bar Signal Processor
Used American DJ Pow-r bar Signal Processor
Product Price  $99.99
Excellent Condition
Used KORG DT-1PRO
Used KORG DT-1PRO
Product Price  $99.99
Excellent Condition
Used Art CleanBoxPRO Direct Box
Used Art CleanBoxPRO Direct Box
Product Price  $79.99
Excellent Condition
Used PreSonus TubePre V1 Microphone Preamp
Used PreSonus TubePre V1 Microphone Preamp
Product Price  $99.99
Excellent Condition
Used K-song Live Sound Card Signal Processor
Used K-song Live Sound Card Signal Processor
Product Price  $89.99
Great Condition
Used dbx 223XS Stereo 2-Way/Mono 3-Way Crossover
Used dbx 223XS Stereo 2-Way/Mono 3-Way Crossover
Product Price  $99.99
Great Condition
Used Radial Engineering HEADLIGHT Direct Box
Used Radial Engineering HEADLIGHT Direct Box
Product Price  $89.99
Great Condition
Used Radial Engineering SHOTGUN Direct Box
Used Radial Engineering SHOTGUN Direct Box
Product Price  $90.99
Great Condition
Used Fredenstein Professional Audio Artistic Mic Pre SE Rack Equipment
Used Fredenstein Professional Audio Artistic Mic Pre SE...
Product Price  $69.99
Great Condition
Used Radial Engineering SGI TX Direct Box
Used Radial Engineering SGI TX Direct Box
Product Price  $90.99
Great Condition
Used Radial Engineering SGI RX Direct Box
Used Radial Engineering SGI RX Direct Box
Product Price  $89.99
Great Condition
Used Behringer MDX2600 Compressor
Used Behringer MDX2600 Compressor
Product Price  $79.99
Great Condition
Used dbx 231s Dual Channel 31-Band Graphic Equalizer
Used dbx 231s Dual Channel 31-Band Graphic Equalizer
Product Price  $89.99
Great Condition
Used dbx 266XS Compressor
Used dbx 266XS Compressor
Product Price  $83.99
Great Condition
Used Zoom Zoom Studio 1201 Multi Effects Processor
Used Zoom Zoom Studio 1201 Multi Effects Processor
Product Price  $99.99
Great Condition
Used Fender RT-1000 Signal Processor
Used Fender RT-1000 Signal Processor
Product Price  $59.99
Great Condition
Used dbx 231 Dual 31-Band Graphic Equalizer
Used dbx 231 Dual 31-Band Graphic Equalizer
Product Price  $99.99
Great Condition
Used Cloud Cloudlifter CL-1 Microphone Preamp
Used Cloud Cloudlifter CL-1 Microphone Preamp
Product Price  $89.99
Great Condition
Used Behringer Ultralink MS8000 Signal Processor
Used Behringer Ultralink MS8000 Signal Processor
Product Price  $99.99
Great Condition
Used Cloud Cloudlifter CL-1 Microphone Preamp
Used Cloud Cloudlifter CL-1 Microphone Preamp
Product Price  $89.99
Great Condition
Used Radial Engineering Pro 48 Signal Processor
Used Radial Engineering Pro 48 Signal Processor
Product Price  $99.99
Great Condition
Used Phonic i7100 Feedback Silencer Compressor
Used Phonic i7100 Feedback Silencer Compressor
Product Price  $99.99
Great Condition
Used Behringer SU9920 Sonic Ultramizer Exciter
Used Behringer SU9920 Sonic Ultramizer Exciter
Product Price  $89.99
Great Condition