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Under $20 Signal Processors

Shop the best prices on 5,019 great value under $20 signal processors. Shopping for signal processors is easy with Fruugo, with SALE discounts, offers and savings on Anqing Cheng Bu, Kincjon, Hsmy and more. Buy signal processors online safely with Fruugo, with secure payment and fast shipping to Singapore.

CrossoversEffects ProcessorsMicrophone PreampsPhono PreampsEqualizers
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1 - 32 of 5,019
MAX9814 Microphone Amplifier Module MIC Microphone Sound Amplification for Audio Projects and Sound Systems
$8.95 Save $4.00 RRP: $12.95
Guitar Noise Noise Gate Suppressor Effect Pedal P20250110873
$15.95 Save $38.05 RRP: $54.00
Dynamic Microphone Condenser Mic Amplifier M-20 Audio 48V Phantom Power Charging Black for Live Soun
$20.95 Save $78.05 RRP: $99.00
Phono Preamp with RCA and 1/4" TRS for Vinyl Turntables
$12.95 Save $15.00 RRP: $27.95
Basket with Hook, Hang It Behind a Door or on a Railing, Black
$13.95 Save $2.00 RRP: $15.95
Basket with Hook, Hang It Behind a Door or on a Railing, Black fg2025031702764
$10.95 Save $40.00 RRP: $50.95
2PCS 200W 3-Way Audio Hifi Filter Circuit Board Stereo Speaker Crossover Filters Treble/Bass 3 Unit Frequency Dividers
$9.95 Save $10.00 RRP: $19.95
Hifi Frequency Divider Bookshelf Speaker Dedicated Crossover Fever Adjustable One High One Low Two
$6.95
Multieffekt-Gesichtscreme für Männer Multi-effect gezichtscrème voor mannen Multi-Effect Ansiktskräm för män
$12.95 Save $6.00 RRP: $18.95
12 Pcs Guitar Effect Footswitch Topper Foot Nail Pedal Topper Anti-Slip Colorful Protection for Guitar Pedal Effect (Random Color)
$15.95 Save $43.05 RRP: $59.00
Vehicle Mounted Audio Module AUX In Module Compatible with Bluetooth Fit for E39 E46 E38 E53
$12.95 Save $13.00 RRP: $25.95
PP400Preamplifier Phono Preamp AudioAmplifier with Level VolumeControl Turntable for Turntable Tube AmplifierSpeaker(US) unbrand
$19.95
200W 40Hz-400Hz Bass Speaker Subwoofer Frequency Divider Home Theater Hifi Stereo DIY Car Audio Woofer Crossover Filter unbrand
$14.95
3X Guitar Pedal 2 Pin SPST Momentary Effects Push Button Foot Switch
$12.95 Save $9.00 RRP: $21.95
XR2206 High Precision Function Signal Generator Sine/Triangle/Square Output 1Hz-1MHz Adjustable Frequency Amplitude
$19.95 Save $23.00 RRP: $42.95
Electric Guitar Pedal Digital Delay for Electric Guitar
$20.95 Save $32.00 RRP: $52.95
Frequency Divider Hi-Fi Audio TREBLE BASS Speaker Frequency Divider Stereo Crossover Filters for 2-
$19.95
Aluminium Electronics Project Box Case Enclosure Instrument 1590A Style Guitar Effects Aluminium B
$12.95 Save $10.00 RRP: $22.95
A902 Preamplifier Board Wideband Preamplifier Module Replacement 5 Times Rate
$20.95 Save $11.00 RRP: $31.95
9v Replacement Compatible With Line 6 Pod 2.0 Processor-Good
$18.95 Save $6.00 RRP: $24.95
PP400 Ultra-Compact Phono Preamp Preamplifier EU Plug
$15.95 Save $68.05 RRP: $84.00
Microphone amplifier module with 20dB gain low noise DC 3.3V/5V
$15.95
Voltage To Frequency Converter Module 010v To 010khz Analog Signal Conversion Board
$17.95 Save $16.00 RRP: $33.95
Effects Pedal Footswitch Topper, Guitar Effect Foot Nail Cap Increase
$19.95
400W Crossover 2 Way High-Low 4-16 Ohm Frequency Divider for Speaker
$12.95
200W 3 Way High Speaker Frequency Divider, DIY Speaker Crossover
$14.95
20Pcs Colorful Guitar Effect Pedal Footswitch Topper Foot Nail Cap Protection Cap for Guitar Effect
$20.95 Save $19.00 RRP: $39.95
Guitar Footswitch Multi Color Metal Electric Guitar Effects Pedal Buttons For Music Applications 3.90x2.00x1.17cm 5Pcs
$19.95 Save $16.00 RRP: $35.95
PP500 Ultra-Compact Phono Preamp Pre Amp Preamplifier with Level Volume Control EU Plug jn
$14.95 Save $69.05 RRP: $84.00
Daisy Chain Cable 1 to Guitar Effect Pedal Accessory 9V DC Adapter Plug Power Cord
$9.95 Save $3.00 RRP: $12.95
General Guitar Effect Pedals 6 Way Power Daisy Chain Cables Fit for Pedal Power Adapter Guitar Effe
$14.95
D235 Speakers Crossovers Unit for Crisp Audiophiles Separation, Supports 4 8Ω Impedance for 8" Speakers Multicolor
$18.95