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?
 Shop Rocktober! Shop deals & special financing*. Call 888-688-0208 or chat for exclusive savings. Rocktober! 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

(165 Items)

  • Direct Boxes

    Direct Boxes

  • Equalizers

    Equalizers

  • Compressors & Limiters

    Compressors & Limiters

  • 500 Series Gear

    500 Series Gear
Clear All
Sale
Livewire SPDI Passive Direct Box With Attenuation Pad
Livewire SPDI Passive Direct Box With Attenuation Pad
4.5 of 5 stars (54)
Product Price  $24.99
$39.99
Sale
Livewire PDI Double-Shielded Heavy-Duty Passive Direct Box
Livewire PDI Double-Shielded Heavy-Duty Passive Direct Box
4.5 of 5 stars (26)
Product Price  $29.99
$49.99
Price Drop
Art P16 16-Channel XLR Balanced Patch Bay
Art P16 16-Channel XLR Balanced Patch Bay
5.0 of 5 stars (1)
Product Price  $79.99
Sale
dbx DriveRack PA2 Speaker Management System
dbx DriveRack PA2 Speaker Management System
4.5 of 5 stars (9)
Product Price  $599.00
$655.00
Save 20% Code ROCK
Rapco Horizon STL-1 Stereo Line Direct Box
Rapco Horizon STL-1 Stereo Line Direct Box
5.0 of 5 stars (7)
Product Price  $96.95
Price Drop
BOSS RC-505mkII Tabletop Loop Station -
BOSS RC-505mkII Tabletop Loop Station -
5.0 of 5 stars (1)
Product Price  $639.03
$659.99
Save 20% Code ROCK
Rapco Horizon DBBLOX Hi to Lo Z Transformer Direct Box
Rapco Horizon DBBLOX Hi to Lo Z Transformer Direct Box
4.5 of 5 stars (4)
Product Price  $26.99
Price Drop
Neutrik 48-Point TRS Patchbay
Neutrik 48-Point TRS Patchbay
4.0 of 5 stars (5)
Product Price  $108.86
$119.99
Price Drop
Cloud Cloudlifter CL-2 Phantom powered gain booster for dynamic and ribbon mics
Cloud Cloudlifter CL-2 Phantom powered gain booster for...
5.0 of 5 stars (8)
Product Price  $212.00
$249.00
Save 20% Code ROCK
Nady CX-22SW 2-Way Stereo Crossover
Nady CX-22SW 2-Way Stereo Crossover
4.5 of 5 stars (9)
Product Price  $131.99
(1) Open Box:
$116.15
Sale
Solid State Logic Revival 4000 Analog Channel Strip
Solid State Logic Revival 4000 Analog Channel Strip
5.0 of 5 stars (1)
Product Price  $1,799.99
$1,999.99
Or $38/month^ with 48 month
financing* Limited Time. Details
Price Drop
Warm Audio WA-1B Optical Compressor
Warm Audio WA-1B Optical Compressor
5.0 of 5 stars (2)
Product Price  $1,099.00
$1,299.00
Or $23/month^ with 48 month
financing* Limited Time. Details
(1) Open Box:
$967.12
Price Drop
Warm Audio WA-412 - Classic 4-Channel Mic Pre
Warm Audio WA-412 - Classic 4-Channel Mic Pre
5.0 of 5 stars (3)
Product Price  $1,349.00
$1,399.00
Or $29/month^ with 48 month
financing* Limited Time. Details
Price Drop
Warm Audio EQP-WA Tube EQ
Warm Audio EQP-WA Tube EQ
4.0 of 5 stars (5)
Product Price  $769.00
$799.00
Or $17/month^ with 48 month
financing* Limited Time. Details
Price Drop
Art 351 Single Channel 31-Band Equalizer
Art 351 Single Channel 31-Band Equalizer
5.0 of 5 stars (9)
Product Price  $159.99
$169.99
Save 15% Code ROCK
ProCo Panic Button Mic A/B Box
ProCo Panic Button Mic A/B Box
4.0 of 5 stars (5)
Product Price  $199.99
Price Drop
PreSonus BlueTube DP V2 2-Channel Mic/Instrument Tube Preamp
PreSonus BlueTube DP V2 2-Channel Mic/Instrument Tube...
4.0 of 5 stars (4)
Product Price  $249.99
$314.99
48-Month Financing*
Warm Audio WA73-EQ One-Channel British Mic Pre & EQ
Warm Audio WA73-EQ One-Channel British Mic Pre & EQ
5.0 of 5 stars (3)
Product Price  $895.09
Or $19/month^ with 48 month
financing* Limited Time. Details
(1) Open Box:
$787.68
TC Helicon Mic Mechanic 2 Vocal Effects Pedal
TC Helicon Mic Mechanic 2 Vocal Effects Pedal
4.0 of 5 stars (4)
Product Price  $139.00
(1) Open Box:
$122.32
BOSS VE-22 Vocal Performer Effects Processor
BOSS VE-22 Vocal Performer Effects Processor
5.0 of 5 stars (1)
Product Price  $399.99
(1) Open Box:
$351.99
Art TPS II 2-Channel Variable Impedance Tube Preamp
Art TPS II 2-Channel Variable Impedance Tube Preamp
4.0 of 5 stars (35)
Product Price  $269.99
(1) Open Box:
$237.59
Radial Engineering J48 Phantom Powered Active Direct Box
Radial Engineering J48 Phantom Powered Active Direct Box
4.0 of 5 stars (7)
Product Price  $299.99
(1) Open Box:
$263.99
Mackie MDB-2P Stereo Passive Direct Box
Mackie MDB-2P Stereo Passive Direct Box
5.0 of 5 stars (2)
Product Price  $89.99
(1) Open Box:
$79.19
Radial Engineering JDX-48 Reactor Guitar Amp Direct Box
Radial Engineering JDX-48 Reactor Guitar Amp Direct Box
5.0 of 5 stars (1)
Product Price  $299.99
(1) Open Box:
$263.99
dbx 234xs Stereo 2/3 Way, Mono 4-Way Crossover
dbx 234xs Stereo 2/3 Way, Mono 4-Way Crossover
5.0 of 5 stars (1)
Product Price  $380.00
(1) Open Box:
$334.40
TC Helicon VoiceTone Single H1 Intelligent Harmony Effects Pedal
TC Helicon VoiceTone Single H1 Intelligent Harmony Effects...
4.5 of 5 stars (66)
Product Price  $139.00
(1) Open Box:
$122.32
dbx 231s Dual-Channel 31-Band Graphic Equalizer
dbx 231s Dual-Channel 31-Band Graphic Equalizer
4.0 of 5 stars (7)
Product Price  $335.00
(1) Open Box:
$294.80
dbx 223xs Stereo 2-Way/Mono 3-Way Crossover
dbx 223xs Stereo 2-Way/Mono 3-Way Crossover
4.5 of 5 stars (8)
Product Price  $300.00
(1) Open Box:
$264.00
PreSonus Studio Channel Tube Channel Strip
Open-Box PreSonus Studio Channel Tube Channel Strip
4.5 of 5 stars (21)
(1) Open Box:
$307.99
dbx 215s Dual-Channel 15-Band Graphic Equalizer
dbx 215s Dual-Channel 15-Band Graphic Equalizer
4.5 of 5 stars (10)
Product Price  $280.00
(1) Open Box:
$246.40
48-Month Financing*
Solid State Logic Fusion Analog 2U Stereo Outboard Processor
Solid State Logic Fusion Analog 2U Stereo Outboard...
5.0 of 5 stars (1)
Product Price  $2,699.99
Or $57/month^ with 48 month
financing* Limited Time. Details
(1) Open Box:
$2,375.99
Cloud Cloudlifter Zi Microphone Activator
Cloud Cloudlifter Zi Microphone Activator
5.0 of 5 stars (1)
Product Price  $399.00
(1) Open Box:
$351.12
24-Month Financing*
Universal Audio 6176 Channel Strip
Universal Audio 6176 Channel Strip
5.0 of 5 stars (3)
Product Price  $2,999.00
Or $125/month^ with 24 month
financing* Limited Time. Details
(1) Open Box:
$2,639.12
Focusrite ISA One Classic Single-Channel Mic Pre
Focusrite ISA One Classic Single-Channel Mic Pre
4.5 of 5 stars (15)
Product Price  $699.99
(1) Open Box:
$615.99
Radial Engineering JS2 Passive Microphone Splitter Direct Box
Radial Engineering JS2 Passive Microphone Splitter Direct...
5.0 of 5 stars (1)
Product Price  $329.99
(1) Open Box:
$290.39
dbx DriveRack 260 Complete Equalization and Loudspeaker Control System
dbx DriveRack 260 Complete Equalization and Loudspeaker...
5.0 of 5 stars (3)
Product Price  $945.00
(2) Open Box: from
$756.00
24-Month Financing*
Universal Audio 710 Twin-Finity Mic Pre & DI Box
Universal Audio 710 Twin-Finity Mic Pre & DI Box
4.5 of 5 stars (5)
Product Price  $999.00
Or $42/month^ with 24 month
financing* Limited Time. Details
(1) Open Box:
$879.12
dbx 131s Single Channel 31-Band Graphic Equalizer
dbx 131s Single Channel 31-Band Graphic Equalizer
4.5 of 5 stars (2)
Product Price  $275.00
(1) Open Box:
$242.00
24-Month Financing*
Universal Audio UA-S610 SOLO/610 Classic Vacuum Tube Microphone Preamp and D.I. Box
Universal Audio UA-S610 SOLO/610 Classic Vacuum Tube...
4.5 of 5 stars (9)
Product Price  $1,199.00
Or $50/month^ with 24 month
financing* Limited Time. Details
(1) Open Box:
$959.20
24-Month Financing*
Universal Audio LA-610 Mk II Classic Tube Recording Channel
Universal Audio LA-610 Mk II Classic Tube Recording Channel
5.0 of 5 stars (12)
Product Price  $1,999.00
Or $84/month^ with 24 month
financing* Limited Time. Details
(1) Open Box:
$1,599.20
TC Helicon VoiceLive 3 Extreme Vocal and Guitar Effects Processor Pedal
TC Helicon VoiceLive 3 Extreme Vocal and Guitar Effects...
4.0 of 5 stars (13)
Product Price  $569.00
TC Helicon Play Acoustic Vocal and Guitar Effects Pedal
TC Helicon Play Acoustic Vocal and Guitar Effects Pedal
4.0 of 5 stars (32)
Product Price  $289.00
TC Helicon Harmony Singer 2 Vocal Harmony and Reverb Pedal
TC Helicon Harmony Singer 2 Vocal Harmony and Reverb Pedal
4.0 of 5 stars (17)
Product Price  $149.00
Radial Engineering ProD2 Passive Stereo Direct Box
Radial Engineering ProD2 Passive Stereo Direct Box
5.0 of 5 stars (9)
Product Price  $239.99
Radial Engineering ProDI Passive Direct Box
Radial Engineering ProDI Passive Direct Box
5.0 of 5 stars (22)
Product Price  $154.99
TC Helicon VoiceLive Play Vocal Effects Pedal
TC Helicon VoiceLive Play Vocal Effects Pedal
4.5 of 5 stars (46)
Product Price  $229.00
Art S8 8-Channel Balanced Mic Splitter
Art S8 8-Channel Balanced Mic Splitter
5.0 of 5 stars (3)
Product Price  $345.99
24-Month Financing*
Universal Audio 1176LN Solid State Limiting Amplifier
Universal Audio 1176LN Solid State Limiting Amplifier
5.0 of 5 stars (1)
Product Price  $2,999.00
Or $125/month^ with 24 month
financing* Limited Time. Details
24-Month Financing*
Universal Audio 4-710d 4-Channel Mic Preamp
Universal Audio 4-710d 4-Channel Mic Preamp
5.0 of 5 stars (6)
Product Price  $1,999.00
Or $84/month^ with 24 month
financing* Limited Time. Details
Radial Engineering BT-Pro V2 Stereo Bluetooth Direct Box
Radial Engineering BT-Pro V2 Stereo Bluetooth Direct Box
5.0 of 5 stars (1)
Product Price  $419.99
Rupert Neve Designs RNDI Active DI Box
Rupert Neve Designs RNDI Active DI Box
5.0 of 5 stars (1)
Product Price  $399.00
48-Month Financing*
Solid State Logic The Bus+ 2-Channel Bus Compressor and Dynamic Equalizer
Solid State Logic The Bus+ 2-Channel Bus Compressor and...
5.0 of 5 stars (1)
Product Price  $2,999.99
Or $63/month^ with 48 month
financing* Limited Time. Details
Behringer ULTRAGRAPH PRO FBQ3102HD 2-Channel 31-Band Graphic EQ With FBQ Feedback Detection System
Behringer ULTRAGRAPH PRO FBQ3102HD 2-Channel 31-Band...
5.0 of 5 stars (1)
Product Price  $189.00
Drawmer 1976 Stereo 3-Band Saturation and Width Processor
Drawmer 1976 Stereo 3-Band Saturation and Width Processor
5.0 of 5 stars (1)
Product Price  $1,399.00
Rupert Neve Designs Newton Channel Strip With Mic Pre + EQ + Compressor With Silk
Rupert Neve Designs Newton Channel Strip With Mic Pre + EQ...
5.0 of 5 stars (2)
Product Price  $1,999.00
Rupert Neve Designs RNDI-M Active Transformer Direct Box
Rupert Neve Designs RNDI-M Active Transformer Direct Box
5.0 of 5 stars (1)
Product Price  $199.00
Focusrite ISA Two Classic Dual Mono Transformer-Based Microphone Preamplifier
Focusrite ISA Two Classic Dual Mono Transformer-Based...
5.0 of 5 stars (2)
Product Price  $1,029.99
Radial Engineering JDI Stereo Passive Direct Box
Radial Engineering JDI Stereo Passive Direct Box
5.0 of 5 stars (1)
Product Price  $459.99
Radial Engineering J48 Stereo Active Direct Box
Radial Engineering J48 Stereo Active Direct Box
5.0 of 5 stars (1)
Product Price  $459.99
Radial Engineering ProAV2 Stereo Direct Box
Radial Engineering ProAV2 Stereo Direct Box
4.5 of 5 stars (3)
Product Price  $264.99