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?
 Friendsgiving Flash Sale ends today!
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

(2226 Items)

  • Direct Boxes

    Direct Boxes

  • Equalizers

    Equalizers

  • Compressors & Limiters

    Compressors & Limiters

  • 500 Series Gear

    500 Series Gear
Rolls Used Rolls HRD342 Effects Processor
Used Rolls Used Rolls HRD342 Effects Processor
Product Price  $109.99
Good Condition
Solid State Logic Used Solid State Logic Logic X Rack AND XR626 Compressor
Used Solid State Logic Used Solid State Logic Logic X Rack AND...
Product Price  $1,999.99
Good Condition
Cloud Used Cloud Cloudlifter CL-1 Microphone Preamp
Used Cloud Used Cloud Cloudlifter CL-1 Microphone Preamp
Product Price  $93.99
Good Condition
Warm Audio Used Warm Audio WA76 Compressor
Used Warm Audio Used Warm Audio WA76 Compressor
Product Price  $449.99
Good Condition
E-mu Used E-mu PROTEUS 1 Multi Effects Processor
Used E-mu Used E-mu PROTEUS 1 Multi Effects Processor
Product Price  $199.99
$229.99
Good Condition
Ta Link Used TA Link Mono TX Direct Box
Used Ta Link Used TA Link Mono TX Direct Box
Product Price  $249.99
Good Condition
Art Used Art 428 EFFECTS PROCESSOR Effects Processor
Used Art Used Art 428 EFFECTS PROCESSOR Effects Processor
Product Price  $89.99
$114.99
Good Condition
API Used API API312 Rack Equipment
Used API Used API API312 Rack Equipment
Product Price  $684.99
Good Condition
Hafler Used HAFLER T3 Microphone Preamp
Used Hafler Used HAFLER T3 Microphone Preamp
Product Price  $379.99
$399.99
Good Condition
Radial Engineering Used Radial Engineering PZ-DI Direct Box
Used Radial Engineering Used Radial Engineering PZ-DI Direct Box
Product Price  $199.99
Good Condition
Focusrite Used Focusrite ISA Two Microphone Preamp
Used Focusrite Used Focusrite ISA Two Microphone Preamp
Product Price  $499.99
$629.99
Good Condition
Universal Audio Used Universal Audio 710TF Microphone Preamp
Used Universal Audio Used Universal Audio 710TF Microphone...
Product Price  $654.99
Good Condition
Art Used Art Digital MPA-II 2-Channel Tube Microphone Preamp
Used Art Used Art Digital MPA-II 2-Channel Tube Microphone...
Product Price  $299.99
Good Condition
Audio-Technica Used Audio-Technica AT8531 Microphone Preamp
Used Audio-Technica Used Audio-Technica AT8531 Microphone Preamp
Product Price  $69.99
$89.99
Good Condition
Rocktron Used Rocktron Hush Super C Noise Gate
Used Rocktron Used Rocktron Hush Super C Noise Gate
Product Price  $99.99
Good Condition
Golden Age Project Used Golden Age Project EQ573 Equalizer
Used Golden Age Project Used Golden Age Project EQ573 Equalizer
Product Price  $199.99
Good Condition
Phonic Used Phonic PEQ3300 Equalizer
Used Phonic Used Phonic PEQ3300 Equalizer
Product Price  $50.99
Good Condition
Animals Pedal Used Animals Pedal Firewood Acoustic DI Direct Box
Used Animals Pedal Used Animals Pedal Firewood Acoustic DI...
Product Price  $99.99
$119.99
Good Condition
Focusrite Used Focusrite OctoPre MKII Microphone Preamp
Used Focusrite Used Focusrite OctoPre MKII Microphone Preamp
Product Price  $479.99
Good Condition
Avalon Used Avalon VT737SP Class A Mono Tube Microphone Preamp
Used Avalon Used Avalon VT737SP Class A Mono Tube Microphone...
Product Price  $1,699.99
$1,879.99
Good Condition
Technical Pro Used Technical Pro Tub 800 Channel Strip
Used Technical Pro Used Technical Pro Tub 800 Channel Strip
Product Price  $39.99
Good Condition
BOSS Used BOSS GE131 Equalizer
Used BOSS Used BOSS GE131 Equalizer
Product Price  $79.99
Good Condition
Behringer Used Behringer Dsp1224p Modulizer Pro Multi Effects Processor
Used Behringer Used Behringer Dsp1224p Modulizer Pro Multi...
Product Price  $79.99
Good Condition
Behringer Used Behringer ULTRA-DI PRO Direct Box
Used Behringer Used Behringer ULTRA-DI PRO Direct Box
Product Price  $69.99
Good Condition
dbx Vintage 1980s Dbx 463X Noise Gate Noise Gate
Vintage dbx Vintage 1980s Dbx 463X Noise Gate Noise Gate
Product Price  $39.99
$59.99
dbx Vintage 1980s Dbx 463X Noise Gate Noise Gate
Vintage dbx Vintage 1980s Dbx 463X Noise Gate Noise Gate
Product Price  $39.99
$59.99
Signalflex Used Signalflex SF-DAB THE CONNECTION Signal Processor
Used Signalflex Used Signalflex SF-DAB THE CONNECTION Signal...
Product Price  $29.99
Good Condition
IK Multimedia Used IK Multimedia AMPLITUBE TONEX Multi Effects Processor
Used IK Multimedia Used IK Multimedia AMPLITUBE TONEX Multi...
Product Price  $319.99
Good Condition
Warm Audio Used Warm Audio EPQ WA Equalizer
Used Warm Audio Used Warm Audio EPQ WA Equalizer
Product Price  $599.99
Good Condition
Warm Audio Used Warm Audio EQP-WA Compressor
Used Warm Audio Used Warm Audio EQP-WA Compressor
Product Price  $499.99
Good Condition
Warm Audio Used Warm Audio EQP-WA Compressor
Used Warm Audio Used Warm Audio EQP-WA Compressor
Product Price  $499.99
Good Condition
Behringer Used Behringer Ad121 Direct Box
Used Behringer Used Behringer Ad121 Direct Box
Product Price  $29.99
$49.99
Good Condition
API Used API SR24 Equalizer
Used API Used API SR24 Equalizer
Product Price  $1,149.99
Good Condition
Radial Engineering Used Radial Engineering X-AMP Direct Box
Used Radial Engineering Used Radial Engineering X-AMP Direct Box
Product Price  $149.99
Good Condition
Warm Audio Used Warm Audio WA-2A Compressor
Used Warm Audio Used Warm Audio WA-2A Compressor
Product Price  $669.99
Good Condition
Lexicon Used Lexicon PCM42 Effects Processor
Used Lexicon Used Lexicon PCM42 Effects Processor
Product Price  $1,499.99
$1,599.99
Good Condition
Samson Used Samson STEREO COMPRESSOR LIMITER Compressor
Used Samson Used Samson STEREO COMPRESSOR LIMITER Compressor
Product Price  $70.99
Good Condition
Doepfer Used DOEPFER 2XBUFF.MULT Rack Equipment
Used Doepfer Used DOEPFER 2XBUFF.MULT Rack Equipment
Product Price  $49.99
$59.99
Good Condition
Doepfer Used DOEPFER QUAD BUFFER Rack Equipment
Used Doepfer Used DOEPFER QUAD BUFFER Rack Equipment
Product Price  $49.99
$59.99
Good Condition
Behringer Used Behringer MIC100 Microphone Preamp
Used Behringer Used Behringer MIC100 Microphone Preamp
Product Price  $59.99
Good Condition