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

(176 Items)

  • Direct Boxes

    Direct Boxes

  • Equalizers

    Equalizers

  • Compressors & Limiters

    Compressors & Limiters

  • 500 Series Gear

    500 Series Gear
Clear All
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
TC Helicon VoiceTone Single C1 HardTune & Correction Effects Pedal
TC Helicon VoiceTone Single C1 HardTune & Correction...
4.5 of 5 stars (30)
Product Price  $149.00
Radial Engineering Pro48 Active 48-Volt Compact Active Direct Box
Radial Engineering Pro48 Active 48-Volt Compact Active...
5.0 of 5 stars (6)
Product Price  $154.99
Empirical Labs EL8 Distressor Audio Compressor
Empirical Labs EL8 Distressor Audio Compressor
5.0 of 5 stars (1)
Product Price  $1,549.00
Roland VT-12 Vocal Trainer
Roland VT-12 Vocal Trainer
4.5 of 5 stars (7)
Product Price  $309.99
Radial Engineering HotShot DM1 Microphone Signal Muting Footswitch
Radial Engineering HotShot DM1 Microphone Signal Muting...
4.0 of 5 stars (4)
Product Price  $179.99
Cloud Cloudlifter CL-1 Mic Activator
Cloud Cloudlifter CL-1 Mic Activator
5.0 of 5 stars (16)
Product Price  $129.00
48-Month Financing*
Warm Audio WA-2A Tube Opto Compressor
Warm Audio WA-2A Tube Opto Compressor
5.0 of 5 stars (1)
Product Price  $999.00
Or $21/month^ with 48 month
financing* Limited Time. Details
Radial Engineering JDI MK3 Passive Direct Box
Radial Engineering JDI MK3 Passive Direct Box
5.0 of 5 stars (10)
Product Price  $299.99
Art PDB4 Passive Direct Box
Art PDB4 Passive Direct Box
4.5 of 5 stars (2)
Product Price  $125.99
Radial Engineering Pro RMP Passive Reamping Direct Box
Radial Engineering Pro RMP Passive Reamping Direct Box
5.0 of 5 stars (4)
Product Price  $154.99
Whirlwind IMP 2 Standard Direct Box
Whirlwind IMP 2 Standard Direct Box
5.0 of 5 stars (27)
Product Price  $98.00
Radial Engineering StageBug SB-1 Compact Active Direct Box
Radial Engineering StageBug SB-1 Compact Active Direct Box
4.0 of 5 stars (1)
Product Price  $109.99
Radial Engineering TWIN ISO Passive Line-Level Isolator
Radial Engineering TWIN ISO Passive Line-Level Isolator
5.0 of 5 stars (1)
Product Price  $389.99
TC Electronic Clarity M Stereo/5.1 Audio Loudness Meter
TC Electronic Clarity M Stereo/5.1 Audio Loudness Meter
5.0 of 5 stars (1)
Product Price  $319.00
Radial Engineering ProAV1 Single-Channel Direct Box
Radial Engineering ProAV1 Single-Channel Direct Box
5.0 of 5 stars (4)
Product Price  $179.99
48-Month Financing*
Solid State Logic UltraViolet EQ 500 Series Stereo EQ
Solid State Logic UltraViolet EQ 500 Series Stereo EQ
5.0 of 5 stars (2)
Product Price  $699.99
Or $15/month^ with 48 month
financing* Limited Time. Details
Rapco Horizon CVPBLOX Variable Pad Microphone Volume Control
Rapco Horizon CVPBLOX Variable Pad Microphone Volume...
4.0 of 5 stars (7)
Product Price  $59.99
Art SCL2 Compressor
Art SCL2 Compressor
5.0 of 5 stars (1)
Product Price  $199.99
TC Helicon Ditto Mic Looper Pedal
TC Helicon Ditto Mic Looper Pedal
5.0 of 5 stars (8)
Product Price  $119.00
Galaxy Audio CM-130 Check Mate SPL Meter
Galaxy Audio CM-130 Check Mate SPL Meter
5.0 of 5 stars (5)
Product Price  $89.99
Rapco Horizon DBBLOXF Lo to Hi Z Transformer Direct Box
Rapco Horizon DBBLOXF Lo to Hi Z Transformer Direct Box
4.5 of 5 stars (3)
Product Price  $26.99
Radial Engineering StageBug SB-5 Stereo Laptop Direct Box
Radial Engineering StageBug SB-5 Stereo Laptop Direct Box
5.0 of 5 stars (1)
Product Price  $144.99
Art ARTcessories Zdirect Professional Passive Direct Box
Art ARTcessories Zdirect Professional Passive Direct Box
4.5 of 5 stars (19)
Product Price  $52.99
Shure RK100PK In-line Preamplifier for MX Series Microphones
Shure RK100PK In-line Preamplifier for MX Series...
5.0 of 5 stars (1)
Product Price  $126.00
Art SplitCom Pro 2 Way Mic Splitter / Combiner
Art SplitCom Pro 2 Way Mic Splitter / Combiner
5.0 of 5 stars (13)
Product Price  $48.82
Radial Engineering 500 Series ThumbSet Screws
Radial Engineering 500 Series ThumbSet Screws
5.0 of 5 stars (2)
Product Price  $19.99
Roland AIRA Compact E-4 Voice Tweaker
Roland AIRA Compact E-4 Voice Tweaker
5.0 of 5 stars (1)
Product Price  $269.99
48-Month Financing*
Solid State Logic SiX Channel 500 Series Mini Channel Strip
Solid State Logic SiX Channel 500 Series Mini Channel Strip
5.0 of 5 stars (2)
Product Price  $499.99
Or $11/month^ with 48 month
financing* Limited Time. Details
API 3124V Discrete 4-Channel Mic/Line Preamp
API 3124V Discrete 4-Channel Mic/Line Preamp
5.0 of 5 stars (1)
Product Price  $3,295.00
Soyuz Microphones The Launcher Microphone Preamp
Soyuz Microphones The Launcher Microphone Preamp
4.0 of 5 stars (1)
Product Price  $249.00
Drawmer 1974 Stereo Parametric Equaliser
Drawmer 1974 Stereo Parametric Equaliser
5.0 of 5 stars (1)
Product Price  $1,369.00
Roland VT-4 Voice Transformer
Roland VT-4 Voice Transformer
5.0 of 5 stars (1)
Product Price  $309.99
Radial Engineering Catapult Mini RX 4-Channel Cat 5 Audio Snake
Radial Engineering Catapult Mini RX 4-Channel Cat 5 Audio...
5.0 of 5 stars (1)
Product Price  $124.99
TC Helicon CRITICAL MASS Vocal Effects Pedal
TC Helicon CRITICAL MASS Vocal Effects Pedal
4.0 of 5 stars (2)
Product Price  $129.00
dbx Di1 Active Direct Box
dbx Di1 Active Direct Box
5.0 of 5 stars (1)
Product Price  $195.00
Cloud Cloudlifter-Z Microphone Activator
Cloud Cloudlifter-Z Microphone Activator
5.0 of 5 stars (3)
Product Price  $249.00
24-Month Financing*
Tascam TA-1VP Vocal Processor With Antares Auto-Tune
Tascam TA-1VP Vocal Processor With Antares Auto-Tune
4.0 of 5 stars (10)
Product Price  $499.00
Or $21/month^ with 24 month
financing* Limited Time. Details
Radial Engineering JPC Stereo PC DI Box
Radial Engineering JPC Stereo PC DI Box
5.0 of 5 stars (3)
Product Price  $299.99
dbx 530 Series Parametric EQ
dbx 530 Series Parametric EQ
5.0 of 5 stars (2)
Product Price  $340.00
Radial Engineering PromS2 Passive Microphone Splitter
Radial Engineering PromS2 Passive Microphone Splitter
5.0 of 5 stars (1)
Product Price  $179.99
Grace Design M101 Microphone Preamp
Grace Design M101 Microphone Preamp
4.5 of 5 stars (3)
Product Price  $874.00
Millennia STT-1 Origin All-In-One Recording Front End
Millennia STT-1 Origin All-In-One Recording Front End
5.0 of 5 stars (1)
Product Price  $4,050.00
Chandler Limited TG-2 Abbey Road Special-Edition Mic Preamp
Chandler Limited TG-2 Abbey Road Special-Edition Mic Preamp
5.0 of 5 stars (2)
Product Price  $2,850.00
TC Helicon VoiceTone Single T1 Adaptive Tone & Dynamics Effects Pedal
TC Helicon VoiceTone Single T1 Adaptive Tone & Dynamics...
4.5 of 5 stars (13)
Product Price  $139.00
dbx Drive Rack 260 with RTA-M Reference Mic
dbx Drive Rack 260 with RTA-M Reference Mic
5.0 of 5 stars (1)
Product Price  $955.00
Radial Engineering Reamp JCR Passive Reamper
Radial Engineering Reamp JCR Passive Reamper
5.0 of 5 stars (5)
Product Price  $299.99
Art Dual Transformer/Isolator Hum Eliminator
Art Dual Transformer/Isolator Hum Eliminator
5.0 of 5 stars (3)
Product Price  $95.99
Radial Engineering HotShot ABI Line Input Selector
Radial Engineering HotShot ABI Line Input Selector
4.0 of 5 stars (1)
Product Price  $179.99
Radial Engineering Radial Workhorse Cube Desktop Power Rack
Radial Engineering Radial Workhorse Cube Desktop Power Rack
4.0 of 5 stars (1)
Product Price  $419.99
Manley Stereo Variable Mu Limiter Compressor
Manley Stereo Variable Mu Limiter Compressor
5.0 of 5 stars (1)
Product Price  $4,999.00
Rupert Neve Designs Portico 511 500-Series Mic Preamp with Texture Control
Rupert Neve Designs Portico 511 500-Series Mic Preamp with...
5.0 of 5 stars (2)
Product Price  $849.00
Art ARTcessories Xdirect Professional Active Direct Box
Art ARTcessories Xdirect Professional Active Direct Box
4.5 of 5 stars (4)
Product Price  $76.99