AudioFu

Best Interface Modules for Signal Routing 2025

Perfect interface modules for signal-routing - easy to play and learn on

Last updated: November 5, 2025 • Next update: November 12, 2025

PRICE RANGES: Under $100 Under $200 Under $300 Under $500
SKILL LEVELS: For Beginner For Intermediate For Professional For Advanced
GENRES & STYLES: For System Integration For External Connections For Level Matching For Format Conversion For Studio Integration For Signal Routing
BRANDS: Intellijel Designs Expert Sleepers Doepfer Befaco ADDAC
Intellijel Designs Stereo I/O 1U - Professional Music Instrument Photo
#1

Intellijel Designs Stereo I/O 1U

by Intellijel Designs
Studio Integration System Integration Level Matching
Key Feature:
• Connect modular to external equipment
✓ PROS
  • • Connect modular to external equipment
  • • Protect sensitive modular circuits
✗ CONS
  • • Not directly creative or musical
  • • Takes up valuable HP space

Intellijel Designs Stereo I/O 1UEurorack ModuleInput/output module for audio signalsTwo inputs for external signalseach...

⭐ 4.8/5 (36 reviews)
Sound:
8/10
Build:
9/10
Value:
7/10
Art. 606722
$237
Buy at Thomann View Details
Bastl Instruments 1983 - Professional Music Instrument Photo
#2

Bastl Instruments 1983

by Bastl Instruments
Level Matching Format Conversion Signal Routing
Key Feature:
• Connect modular to external equipment
✓ PROS
  • • Enable use of external processors
  • • Protect sensitive modular circuits
✗ CONS
  • • Additional cost for basic functionality
  • • Not directly creative or musical

Bastl Instruments 1983Eurorack ModulePolyphonic MIDI to CV/Gate interface4 Channels with CV and gate output that can be...

⭐ 4.9/5 (44 reviews)
Sound:
7/10
Build:
7/10
Value:
8/10
Art. 563228
$252
Buy at Thomann View Details
Expert Sleepers ES-10 - Professional Music Instrument Photo
#3

Expert Sleepers ES-10

by Expert Sleepers
Studio Integration Format Conversion System Integration
Key Feature:
• Connect modular to external equipment
✓ PROS
  • • Enable use of external processors
  • • Protect sensitive modular circuits
✗ CONS
  • • May introduce noise or coloration
  • • Multiple types may be needed

Expert Sleepers ES-10Eurorack Module8-Channel ADAT interfaceConverts 8 ADAT inputs/outputs to analogue audio or CV...

⭐ 4.6/5 (49 reviews)
Sound:
8/10
Build:
9/10
Value:
8/10
Art. 599133
$395
Buy at Thomann View Details
Intellijel Designs Audio I/O (2023) - Professional Music Instrument Photo
#4

Intellijel Designs Audio I/O (2023)

by Intellijel Designs
System Integration Format Conversion External Connections
Key Feature:
• Connect modular to external equipment
✓ PROS
  • • Protect sensitive modular circuits
  • • Enable use of external processors
✗ CONS
  • • Takes up valuable HP space
  • • Multiple types may be needed

Intellijel Designs Audio I/O (2023)Eurorack ModuleCompatible with Intellijel Designs MixupOutsStereo Mixer 1UXY IO...

⭐ 4.9/5 (8 reviews)
Sound:
9/10
Build:
7/10
Value:
9/10
Art. 564759
$307
Buy at Thomann View Details
Expert Sleepers Disting NT - Professional Music Instrument Photo
#5

Expert Sleepers Disting NT

by Expert Sleepers
Signal Routing Level Matching Studio Integration
Key Feature:
• Essential for studio integration
✓ PROS
  • • Enable use of external processors
  • • Level and impedance matching
✗ CONS
  • • May introduce noise or coloration
  • • Takes up valuable HP space

Expert Sleepers Disting NTEurorack ModuleMultifunctional module with more than 80 algorithmsincluding...

⭐ 4.6/5 (36 reviews)
Sound:
10/10
Build:
8/10
Value:
7/10
Art. 600545
$768
Buy at Thomann View Details
Hexinverter Électronique Mutant Brain - Professional Music Instrument Photo
#6

Hexinverter Électronique Mutant Brain

by Hexinverter Électronique
Format Conversion System Integration Level Matching
Key Feature:
• Protect sensitive modular circuits
✓ PROS
  • • Connect modular to external equipment
  • • Protect sensitive modular circuits
✗ CONS
  • • Takes up valuable HP space
  • • Multiple types may be needed

Hexinverter Électronique Mutant BrainEurorack ModuleMulti-channel MIDI to CV/Gate interfaceMIDI input (5-pin DIN)4 CV...

⭐ 4.7/5 (50 reviews)
Sound:
8/10
Build:
7/10
Value:
7/10
Art. 559947
$229
Buy at Thomann View Details
Frap Tools CGM Masterone - Professional Music Instrument Photo
#7

Frap Tools CGM Masterone

by Frap Tools
Level Matching System Integration Format Conversion
Key Feature:
• Level and impedance matching
✓ PROS
  • • Level and impedance matching
  • • Enable use of external processors
✗ CONS
  • • May introduce noise or coloration
  • • Additional cost for basic functionality

Frap Tools CGM MasteroneMaster Module For The CGM Creative Mixer SystemUp to four CGM Group can be connected to one...

⭐ 4.8/5 (44 reviews)
Sound:
8/10
Build:
7/10
Value:
9/10
Art. 533210
$347
Buy at Thomann View Details
4ms Meta Module - Professional Music Instrument Photo
#8

4ms Meta Module

by 4ms
External Connections Signal Routing Format Conversion
Key Feature:
• Connect modular to external equipment
✓ PROS
  • • Essential for studio integration
  • • Connect modular to external equipment
✗ CONS
  • • May introduce noise or coloration
  • • Not directly creative or musical

4ms Meta ModuleEurorack ModuleMultifunctional module that calculates emulations of individual modulesentire...

⭐ 5.0/5 (48 reviews)
Sound:
10/10
Build:
10/10
Value:
8/10
Art. 597515
$692
Buy at Thomann View Details
NANO Modules ST-IN - Professional Music Instrument Photo
#9

NANO Modules ST-IN

by NANO Modules
System Integration Signal Routing Format Conversion
Key Feature:
• Essential for studio integration
✓ PROS
  • • Enable use of external processors
  • • Level and impedance matching
✗ CONS
  • • Takes up valuable HP space
  • • Multiple types may be needed

NANO Modules ST-INEurorack ModuleStereo input module and preamp for line signalsGain control (+30 dB) and tilt...

⭐ 4.8/5 (28 reviews)
Sound:
9/10
Build:
7/10
Value:
9/10
Art. 621802
$149
Buy at Thomann View Details
ADDAC 711 Balanced Inputs - Professional Music Instrument Photo
#10

ADDAC 711 Balanced Inputs

by ADDAC
Level Matching System Integration Format Conversion
Key Feature:
• Protect sensitive modular circuits
✓ PROS
  • • Connect modular to external equipment
  • • Enable use of external processors
✗ CONS
  • • Takes up valuable HP space
  • • Multiple types may be needed

ADDAC 711 Balanced InputsEurorack ModuleTwo-channel DI module with input transformersSuitable for adapting external...

⭐ 4.6/5 (49 reviews)
Sound:
7/10
Build:
8/10
Value:
9/10
Art. 554068
$274
Buy at Thomann View Details
XAOC Devices Drezno II - Professional Music Instrument Photo
#11

XAOC Devices Drezno II

by XAOC Devices
Studio Integration External Connections Level Matching
Key Feature:
• Connect modular to external equipment
✓ PROS
  • • Essential for studio integration
  • • Enable use of external processors
✗ CONS
  • • Multiple types may be needed
  • • Not directly creative or musical

XAOC Devices Drezno IIEurorack ModuleBinary signal processor with AD/DA converterGenerates and processes analog signals...

⭐ 4.9/5 (36 reviews)
Sound:
9/10
Build:
8/10
Value:
8/10
Art. 567986
$303
Buy at Thomann View Details
Befaco MIDI Thing V2 - Professional Music Instrument Photo
#12

Befaco MIDI Thing V2

by Befaco
External Connections System Integration Level Matching
Key Feature:
• Level and impedance matching
✓ PROS
  • • Essential for studio integration
  • • Level and impedance matching
✗ CONS
  • • Takes up valuable HP space
  • • Not directly creative or musical

Befaco MIDI Thing V2Eurorack ModuleConfigurable MIDI to CV converter12 Outputseach of which can be configured as...

⭐ 4.8/5 (49 reviews)
Sound:
7/10
Build:
9/10
Value:
9/10
Art. 589637
$351
Buy at Thomann View Details
Intellijel Designs MIDI 1U - Professional Music Instrument Photo
#13

Intellijel Designs MIDI 1U

by Intellijel Designs
External Connections Format Conversion Studio Integration
Key Feature:
• Connect modular to external equipment
✓ PROS
  • • Essential for studio integration
  • • Protect sensitive modular circuits
✗ CONS
  • • Not directly creative or musical
  • • May introduce noise or coloration

Intellijel Designs MIDI 1UUSB/DIN MIDI to CV interfaceDirect connection to USB port and MIDI input of Intellijel 7U and...

⭐ 4.5/5 (53 reviews)
Sound:
9/10
Build:
7/10
Value:
9/10
Art. 505285
$251
Buy at Thomann View Details
Rides In The Storm CON - Professional Music Instrument Photo
#14

Rides In The Storm CON

by Rides In The Storm
External Connections Format Conversion Signal Routing
Key Feature:
• Level and impedance matching
✓ PROS
  • • Enable use of external processors
  • • Protect sensitive modular circuits
✗ CONS
  • • Takes up valuable HP space
  • • Additional cost for basic functionality

Rides In The Storm CONEurorack moduleQuad gain converterConverts 2 channels from line level to Eurorack level and 2...

⭐ 4.4/5 (46 reviews)
Sound:
8/10
Build:
6/10
Value:
9/10
Art. 522194
$65
Buy at Thomann View Details
NANO Modules ST-OUT - Professional Music Instrument Photo
#15

NANO Modules ST-OUT

by NANO Modules
Signal Routing Studio Integration External Connections
Key Feature:
• Protect sensitive modular circuits
✓ PROS
  • • Level and impedance matching
  • • Protect sensitive modular circuits
✗ CONS
  • • Multiple types may be needed
  • • May introduce noise or coloration

NANO Modules ST-OUTEurorack ModuleStereo output module for Eurorack systemsSwitchable drive level (soft / hard)LED...

⭐ 4.8/5 (25 reviews)
Sound:
9/10
Build:
9/10
Value:
8/10
Art. 621810
$149
Buy at Thomann View Details

How to Choose the Best Interface 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 interface 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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