Best Doepfer Filter Modules 2025

Premium Doepfer filter modules - legendary tone and craftsmanship

Last updated: October 22, 2025 • Next update: October 29, 2025

Doepfer A-127 - Professional Music Instrument Photo
#1

Doepfer A-127

Frequency Control Sound Shaping Classic Synthesis
Key Feature:
• Shape and color synthesized sounds
✓ PROS
  • • CV control over frequency and resonance
  • • Shape and color synthesized sounds
✗ CONS
  • • Character differences subtle to beginners
  • • Can be expensive for quality filters

Doepfer A-127, VC Resonance Filter, Width: 28 HP, Depth: 55 mm, Power requirements: +100 mA (+ 12V)/-60 mA (-12 V),...

4.6/5 (20 reviews)
Sound:
7/10
Build:
9/10
Value:
9/10
Doepfer A-121s - Professional Music Instrument Photo
#2

Doepfer A-121s

Audio Processing Classic Synthesis Frequency Control
Key Feature:
• Shape and color synthesized sounds
✓ PROS
  • • Create classic synthesizer sounds
  • • Multiple filter types and characters
✗ CONS
  • • May need multiple types for variety
  • • Can be expensive for quality filters

Doepfer A-121sEurorack ModuleStereo multimode VCFEach filter has continuously adjustable characteristics (from low-pass...

4.5/5 (25 reviews)
Sound:
9/10
Build:
9/10
Value:
9/10
Doepfer A-121-2 - Professional Music Instrument Photo
#3

Doepfer A-121-2

Tonal Character Frequency Control Classic Synthesis
Key Feature:
• Create classic synthesizer sounds
✓ PROS
  • • Create classic synthesizer sounds
  • • Essential for subtractive synthesis
✗ CONS
  • • Patch complexity with multiple filters
  • • Can be expensive for quality filters

Doepfer A-121-212 dB multi-mode filterEurorack moduleVoltage-controlled multi-mode filter with a slope of -12 dB /...

5.0/5 (15 reviews)
Sound:
8/10
Build:
8/10
Value:
9/10
Doepfer A-121s VE - Professional Music Instrument Photo
#4

Doepfer A-121s VE

Frequency Control Tonal Character Classic Synthesis
Key Feature:
• CV control over frequency and resonance
✓ PROS
  • • Multiple filter types and characters
  • • Create classic synthesizer sounds
✗ CONS
  • • Self-oscillation can be tricky
  • • Can be expensive for quality filters

Doepfer A-121s VEEurorack ModuleStereo multimode VCFVintage Edition with a black front panelEach filter has...

4.8/5 (51 reviews)
Sound:
8/10
Build:
7/10
Value:
7/10
Doepfer A-124-2 SE - Professional Music Instrument Photo
#5

Doepfer A-124-2 SE

Tonal Character Frequency Control Audio Processing
Key Feature:
• Multiple filter types and characters
✓ PROS
  • • Essential for subtractive synthesis
  • • Multiple filter types and characters
✗ CONS
  • • Can be expensive for quality filters
  • • May need multiple types for variety

Doepfer A-124-2 SEEurorack ModuleSlim Line Wasp Filter Special Edition12 dB Multimode filterControl for cutoff...

4.5/5 (40 reviews)
Sound:
9/10
Build:
9/10
Value:
9/10
Doepfer A-106-1 Xtreme Filter (MS20) - Professional Music Instrument Photo
#6

Doepfer A-106-1 Xtreme Filter (MS20)

Classic Synthesis Subtractive Synthesis Audio Processing
Key Feature:
• CV control over frequency and resonance
✓ PROS
  • • Essential for subtractive synthesis
  • • Create classic synthesizer sounds
✗ CONS
  • • Patch complexity with multiple filters
  • • May need multiple types for variety

Doepfer A-106 Xtreme Filter (MS20), MS20 Low/High Pass Filter, MS20 filter clone, Width: 14 HP / 70.8 mm, Depth: 40 mm...

4.6/5 (14 reviews)
Sound:
7/10
Build:
7/10
Value:
9/10
Doepfer A-105-2 VE - Professional Music Instrument Photo
#7

Doepfer A-105-2 VE

Audio Processing Subtractive Synthesis Sound Shaping
Key Feature:
• Shape and color synthesized sounds
✓ PROS
  • • Multiple filter types and characters
  • • Shape and color synthesized sounds
✗ CONS
  • • Self-oscillation can be tricky
  • • Character differences subtle to beginners

Doepfer A-105-2 VEEurorack ModuleVintage Edition with black front panelAnalogue low-pass filter (24 dB/oct.) based on...

5.0/5 (41 reviews)
Sound:
7/10
Build:
7/10
Value:
8/10
Doepfer A-101-1 - Professional Music Instrument Photo
#8

Doepfer A-101-1

Frequency Control Subtractive Synthesis Audio Processing
Key Feature:
• Essential for subtractive synthesis
✓ PROS
  • • Multiple filter types and characters
  • • CV control over frequency and resonance
✗ CONS
  • • Character differences subtle to beginners
  • • Self-oscillation can be tricky

Doepfer A-101-1Vactrol Steiner FilterIn contrast to the original circuitthe A-101-1 vactrols are used instead of diodes...

4.7/5 (14 reviews)
Sound:
9/10
Build:
8/10
Value:
9/10
Doepfer A-104 - Professional Music Instrument Photo
#9

Doepfer A-104

Classic Synthesis Audio Processing Frequency Control
Key Feature:
• Shape and color synthesized sounds
✓ PROS
  • • Create classic synthesizer sounds
  • • CV control over frequency and resonance
✗ CONS
  • • Self-oscillation can be tricky
  • • Character differences subtle to beginners

Doepfer A-104, Quad Resonance Filter, Trautonium formant filter, Width: 20 TE / 20 HP / 101.2 mm, Depth: 45 mm...

4.5/5 (23 reviews)
Sound:
8/10
Build:
8/10
Value:
9/10
Doepfer A-105-4 Quad Poly VCF - Professional Music Instrument Photo
#10

Doepfer A-105-4 Quad Poly VCF

Sound Shaping Tonal Character Classic Synthesis
Key Feature:
• Multiple filter types and characters
✓ PROS
  • • Multiple filter types and characters
  • • Shape and color synthesized sounds
✗ CONS
  • • Self-oscillation can be tricky
  • • Patch complexity with multiple filters

Doepfer A-105-4 Quad Poly VCFEurorack ModulePolyphonic filter module with 4 analogue 24dB low-pass filtersCommon...

4.5/5 (49 reviews)
Sound:
9/10
Build:
9/10
Value:
9/10
Doepfer A-106-5 SEM Filter - Professional Music Instrument Photo
#11

Doepfer A-106-5 SEM Filter

Audio Processing Subtractive Synthesis Frequency Control
Key Feature:
• Essential for subtractive synthesis
✓ PROS
  • • CV control over frequency and resonance
  • • Shape and color synthesized sounds
✗ CONS
  • • Self-oscillation can be tricky
  • • Patch complexity with multiple filters

Doepfer A-106-5 SEM FilterFilter12 dB Multi-mode filterin which the circuit of the SEM module is usedWidth: 8HP 40.3...

4.9/5 (19 reviews)
Sound:
6/10
Build:
5/10
Value:
9/10
Doepfer A-121-2 VE - Professional Music Instrument Photo
#12

Doepfer A-121-2 VE

Audio Processing Sound Shaping Tonal Character
Key Feature:
• CV control over frequency and resonance
✓ PROS
  • • Create classic synthesizer sounds
  • • CV control over frequency and resonance
✗ CONS
  • • Character differences subtle to beginners
  • • Self-oscillation can be tricky

Doepfer A-121-2 VEEurorack Module12 dB multimode filterVintage Edition with black front panelVoltage-controlled...

4.5/5 (52 reviews)
Sound:
8/10
Build:
7/10
Value:
9/10
Doepfer A-124 Wasp Filter SE - Professional Music Instrument Photo
#13

Doepfer A-124 Wasp Filter SE

Sound Shaping Audio Processing Subtractive Synthesis
Key Feature:
• CV control over frequency and resonance
✓ PROS
  • • CV control over frequency and resonance
  • • Essential for subtractive synthesis
✗ CONS
  • • Character differences subtle to beginners
  • • Self-oscillation can be tricky

Doepfer A-124 Wasp Filter SEWasp FilterSpecial editionSpecial 12 dB multimode filterCircuit technology of the "EDP...

4.6/5 (43 reviews)
Sound:
7/10
Build:
5/10
Value:
10/10
Doepfer A-123-2 - Professional Music Instrument Photo
#14

Doepfer A-123-2

Audio Processing Sound Shaping Frequency Control
Key Feature:
• Shape and color synthesized sounds
✓ PROS
  • • Create classic synthesizer sounds
  • • Essential for subtractive synthesis
✗ CONS
  • • Patch complexity with multiple filters
  • • Can be expensive for quality filters

Doepfer A-123-2Eurorack ModuleVoltage-controlled high-pass filter4 Separate filter outputs with different slopes: -6-24...

4.8/5 (16 reviews)
Sound:
8/10
Build:
8/10
Value:
8/10
Doepfer A-103 18dB Low Pass Filter - Professional Music Instrument Photo
#15

Doepfer A-103 18dB Low Pass Filter

Classic Synthesis Audio Processing Subtractive Synthesis
Key Feature:
• Shape and color synthesized sounds
✓ PROS
  • • Create classic synthesizer sounds
  • • CV control over frequency and resonance
✗ CONS
  • • Character differences subtle to beginners
  • • Self-oscillation can be tricky

Doepfer A-103 18DB Low-Pass Filter18 dB Low-Pass Filter for A 100 Modular SystemVoltage-controlled low-pass filter with...

4.6/5 (41 reviews)
Sound:
6/10
Build:
5/10
Value:
8/10

How to Choose the Best Filter Modules

Budget Planning

  • • Under $200: Entry-level
  • • $200-$500: Intermediate
  • • $500-$1000: Advanced
  • • $1000+: Professional

Quality Check

  • • Sound clarity & tone
  • • Build materials & finish
  • • Hardware durability
  • • Overall craftsmanship

Key Features

  • • Your musical style
  • • Skill level match
  • • Intended use case
  • • Brand reputation

Frequently Asked Questions

Key factors include build quality, sound characteristics, playability, brand reputation, warranty coverage, and value for money. Consider your musical style, skill level, and intended use to find the best match.
Budget depends on your needs and experience level. Beginners can find quality options for $200-500, intermediate players should consider $500-1500 range, while professionals often invest $1500+ for premium features.
Higher-priced filter modules typically offer better materials, craftsmanship, and performance. They're worth it if you're serious about music, perform regularly, or need professional-grade features.
Top brands combine quality, innovation, and reliability. We evaluate brands based on build quality, sound performance, durability, and customer satisfaction to recommend the best options for different budgets.
Both have advantages. Online offers better prices and selection, while stores allow hands-on testing. We recommend researching online first, then testing in stores if possible. Many online retailers offer excellent return policies.

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