Palmer PCABM passive speaker cabinet merger

Palmer PCABM is a passive speaker cabinet merger for connecting two guitar cabinets to one amplifier output. It offers selectable series or parallel wiring, so the resulting cabinet load depends on the cabinets and the chosen connection.

At a glance

Combines two guitar cabinets with one amplifier output, according to the product description.
Selectable series and parallel wiring changes the total load. The listing illustrates this with two 8 ohm cabinets.
Passive operation means the unit does not require active electronics, according to the manufacturer.

Price

$63.52Save 20%

Reference price: ~~$79.48~~

Price checked: 12 Nov 2026

View offer Ahead of Black FridayExplore the selection

Often bought together

Ernie Ball 3' Straight/Straight Speaker Cable

$30.99

Pros and cons

Pros

Provides a compact way to connect two cabinets to a single amplifier output.
Series and parallel options allow different total loads for a given cabinet setup.
Customer feedback describes setup as easy and reports useful cabinet compatibility.

Technical specifications

12 specifications

Identity
Brand	Palmer
Model	PCABM
Product type	Merger

Connections and wiring
Connection technology listed	TRS
Inputs	2
Input connectors	6.3 mm jack
Output connector type	1/4 inch TS (Tip-Sleeve)

Power and weight
Power configuration	Corded Electric
Weight listed	0.01 Pounds

Manufacturer-described operation
Device design	The device is entirely passive and does not affect tone in any way.
Selectable wiring	parallel or series wiring
Example load with two 8 ohm cabinets	4 ohms (parallel) or 16 ohms (in series)

What to know before buying

The listing describes a passive merger but also lists TRS connectivity, Corded Electric power and a 1/4 inch TS output connector. Confirm the intended connections and operating setup against your amplifier and cabinets before purchase. The listed 0.01-pound weight is a listing detail, not a verified measurement. Do not use the example cabinet loads as a substitute for checking your amplifier's supported load.

Who is it for?

A good fit for

Guitarists who want to connect two speaker cabinets to one amplifier output.
Players who need to choose between series and parallel cabinet wiring and can verify the resulting load suits their amplifier.

Less suited to

Buyers seeking a mixer for line-level or instrument signals rather than a speaker cabinet merger.
Anyone unable to confirm that their amplifier supports the load produced by their cabinet and wiring configuration.

Palmer PCABM passive speaker cabinet merger · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.8 / 5 · 109 ratings

5 stars91%91%
4 stars5%5%
3 stars0%0%
2 stars2%2%
1 star2%2%

Customer feedback reports that the unit is easy to set up and works for connecting two cabinets to one amplifier output. Customers also mention flexibility between series and parallel wiring, alongside positive impressions of functionality and value. Those reports align with the described purpose, but do not confirm that a particular cabinet load or connector setup suits your amplifier. Aggregate ratings are mostly five-star, though lower-star ratings are also present and do not explain their reasons.

Positive themes

Customers report straightforward setup and useful cabinet compatibility.
Customer feedback mentions flexibility from choosing series or parallel wiring.
Customers describe the unit positively for functionality and value.

Frequently asked questions

What does the Palmer PCABM do?

It is described as a passive device for connecting two guitar cabinets to one amplifier output, with selectable series or parallel wiring.

How does wiring choice affect cabinet load?

The listing gives two 8 ohm cabinets as an example: 4 ohms in parallel or 16 ohms in series. Check that the resulting load is supported by your amplifier.

What connectors does the listing specify?

It lists 6.3 mm jack input and output connectors, TRS connectivity technology and a 1/4 inch TS output connector. These details are inconsistent, so confirm the required connections before buying.

Does the PCABM need mains power?

The product description calls it entirely passive, but the details also list Corded Electric as its power source. Confirm the intended setup with the listing before purchase.