Best ABY Switch Box Guide: Top Picks for Guitars and Audio
Answering the need for clean, reliable signal routing, these ABY switch boxes help you send one source to two outputs or combine two sources into one. This guide highlights five models suited for guitar rigs, home studios, and AV setups. The top picks emphasize true bypass, durable construction, and easy use. Best for guitarists with multiple amplifiers, best for studio keyboards, best for balanced audio, and best for coaxial or VGA/AV setups.
Summary of selected products:
- Adoerpai ABY Pedal Channel Switch Box – Best for guitarists needing true bypass with pedalboard-style routing.
- WisWinDa Pro XLR Passive A/B Switch Box – Best for balanced, XLR-based audio without power draw.
- A/B A B A+B Stereo Speaker Selector – Best for home audio: simple A, B, or A+B speaker switching.
- Coaxial A/B Switch (1) – Best for coaxial cable or antenna routing with isolation.
- Monoprice 101375 BNC AB 2 Position Switch Box – Best for quick BNC-based signal routing in video or RF setups.
Adoerpai ABY Pedal Channel Switch Box

The Adoerpai ABY Channel Switch enables one input to be split into two outputs or combined in reverse. This is ideal for guitarists managing multiple amplifiers, speaker cabinets, and effect pedals without tone loss. It features true bypass for high-fidelity signal transmission and a DC 9V option for a status light, though operation is possible without external power.
Best for: Guitarists who use several amps or pedal chains and want a compact, straightforward ABY solution that preserves tone. Choose this if you value true bypass and a simple light indicator option.
Limitation: Power is optional; if you need a lit status indicator, you’ll need a DC power supply (not included). This model is optimized for guitar pedal use, not high-channel-count studio desks.
CablesOnline 2-Way A/B DB25 Parallel Switch Box

This switch uses DB25 connectors to route one PC to two printers or two devices to one printer. It’s built with a fully shielded metal casing suitable for environments where interference might be a concern. The setup is straightforward, with two input sides and a common output.
Best for: Small office or home studios needing reliable, shielded AB routing for parallel devices or legacy printers. Consider this if you require DB25 compatibility and a sturdy metal chassis.
Limitation: It is designed for parallel/DB25 interfaces; not a general-purpose audio or video switch for high-fidelity stereo or AV signals.
WisWinDa Pro XLR Passive A/B Switch Box

The WisWinDa XLR A/B switch box is a passive, balanced-signal selector. It supports XLR and 1/4” inputs, and its reversible design accommodates different source/monitor configurations. As a passive device with full-duplex capability, it does not require external power, simplifying placement in studios or live rigs.
Best for: Audio professionals who rely on balanced XLR signals and want a simple, power-free switch. Choose this if you need a clean, low-noise A/B selector for mic or line-level gear.
Limitation: Being passive, it does not provide gain or active signal conditioning; use where signal strength is adequate and power-free operation is preferred.
A/B A B A+B Stereo Speaker Selector

This 2-way speaker switch lets you pick A, B, or A+B outputs. It’s designed for stereo playback with a mounting option included. The device notes a typical limit of 10 watts per channel for continuous music power, making it suitable for compact bookshelf speakers or small home audio setups.
Best for: Home audio enthusiasts who want quick, reliable speaker switching without passive loss or crosstalk. Choose this when you need to control multiple speaker sets from a single source.
Limitation: It’s rated for relatively low power per channel, so it’s not intended for high-power PA speakers or demanding continuous use.
Coaxial A/B Switch (1)

The Coaxial A/B Switch handles switching between coaxial cables for antenna or similar signals. It features F-type connectors and a design focused on clear isolation between paths to minimize interference and crosstalk.
Best for: AV setups or RF installations where quick routing of coaxial signals is needed and isolation is important. Choose this if you work with TV antennas, cable modems, or similar coax systems.
Limitation: Primarily designed for coaxial signals; not suitable for high-fidelity audio or digital video in non-coaxial formats.
Monoprice 101375 BNC AB 2 Position Switch Box

The Monoprice BNC AB switch provides two-position BNC routing for quick signal changes in video or RF-related tasks. It comes in a compact form factor and is commonly used in test setups, CCTV, or other BNC-based systems requiring fast switchover.
Best for: Tech enthusiasts and professionals who need reliable BNC switching without complexity. Choose this for test rigs or monitoring setups where BNC is the standard connector.
Limitation: BNC-only interface may limit compatibility with other signal types; for mixed media, a multi-connector option might be more convenient.
Buying Guide
Key considerations when choosing an ABY or signal switch box:
- Signal type and connector compatibility: Audio, coaxial, DB25, XLR, or BNC; ensure the device matches your cables and devices.
- Active vs. passive: Passive switches don’t require power but may lose some signal strength; active switches can provide buffering or gain but need power.
- Isolation and interference: Shielded housings and proper isolation reduce crosstalk and hum, especially in multi-device setups.
- Bypass quality: True bypass preserves tone for guitar setups; check for any buffering that could affect signal integrity.
- Power options and LEDs: Power-indicator LEDs help with troubleshooting; consider whether you want status indicators or a completely silent box.
- Physical build and mounting: Steel or metal enclosures offer durability; consider rack-mount or tabletop suitability for your workspace.
- Expansion needs: If you anticipate growing your rig, assess whether one box can handle your future number of sources and outputs.
What to compare next
- Number of inputs/outputs versus connector type
- Signal fidelity expectations for audio versus data or video
- Budget versus features like lighting, buffering, or self-powered operation
Common buyer questions
Q: Do I need a powered ABY switch for guitars?
A: Not always. Passive switches can work well for high-impedance guitar signals, but powered options may offer buffering for longer cable runs.
Q: Can I use an ABY box for both audio and video signals?
A: Yes, but ensure the box supports the required connector types and signal quality for video; some models are optimized for audio only.
Q: What is true bypass and why does it matter?
A: True bypass minimizes the electronic path when the effect is off, preserving signal purity. It matters most for guitar tones and clean signal chains.
Q: Are metal enclosures better than plastic?
A: Metal enclosures generally provide better shielding and durability, which is important in professional or live settings.
Q: How do I prevent signal loss with ABY switching?
A: Choose a model with low insertion loss, proper shielding, and consider using higher-quality cables and shorter runs when possible.
FAQ
- What is an ABY switch box used for?
- Do all ABY boxes support both A and B inputs?
- Can ABY switches affect tone in guitar rigs?
- Is external power necessary for every ABY box?
- What connectors are most common for ABY switches?