JIM DUNLOP EQ Effects Pedal A/B Box (M196) - Dual Output Routing

Our review of the JIM DUNLOP EQ Effects Pedal (M196) finds it best suited for players who need straightforward, reliable signal routing. The bottom line: this MXR A/B Box is for guitarists or bassists who want to send one instrument to two separate amp chains or play through both simultaneously, with a dedicated Thru jack for a tuner or always-on feed. It makes splitting signals and switching between amps intuitive, and its heavy-duty die-cast housing gives real confidence on stage or in the studio.

Key Features

• Dual outputs: Lets you send your instrument to two isolated amp paths so you can compare tones or run separate effects chains simultaneously.
• Thru output: Provides a constant feed for a tuner, monitor, or amp that must always receive the signal.
• Simple switching: Mechanical switches that make it fast to select A, B, or A+B with a clear, tactile action for live use.
• Die-cast housing: Heavy-duty construction protects the unit on stage and in a pedalboard rig, resisting knocks and wear.
• Battery-free operation: Works without a battery, so it does not require power to route your signal.

Who It's For

This A/B Box is ideal for gigging guitarists and bassists who run more than one amp or want a dedicated effects chain per output, and for players who value a rugged, no-frills tool that simply routes signal reliably. It suits anyone who needs a constant tuner feed alongside amp switching, and those who prefer analog switching without power dependencies.

Less suitable for players who need integrated buffering, active isolation to eliminate ground loops, or programmable switching and presets; if you require silent switching or advanced switching workflows, a more feature-rich switcher would be a better fit.

Pros & Cons

Pros

• Solid build and tank-like die-cast housing provide durability for road use.
• Clear functionality for splitting signals and running two amps or effect paths at once.
• Thru output is handy for an always-on tuner or feed without interrupting the main routing.

Cons

• Not an active buffered splitter, so some users may notice noise or tone change depending on their instrument and cable length.

Specifications

Model Number	M196
Type	A/B Box effects pedal
Outputs	Two separated amp outputs plus Thru output
Power	Passive operation, no battery required
Housing	Heavy-duty die-cast
Jacks & Switches	High quality jacks and mechanical switches

Our Verdict

The JIM DUNLOP EQ Effects Pedal (M196) is a practical, value-minded A/B Box that delivers reliable routing and tough construction for players who need two outputs and a thru feed without fuss. For those who want a simple, mechanical splitter to run two amps or separate effect chains, it offers solid build quality and straightforward utility at a reasonable price point.

Frequently Asked Questions

Can I use this pedal to play through two amps at the same time?
Yes. The M196 supports A+B operation so you can send your instrument to both amps simultaneously.

Does the unit require a battery or power supply?
No. The A/B Box is passive and does not need a battery to route the signal.

What is the Thru jack for?
The Thru jack provides a constant output for a tuner, amp, or other device that should always receive the instrument signal.