Search query: guitar amplifier with 1/4 in jack

Product: 2 Pack Round Metal Speaker Jack Plates for Amplifier Cabinets 1/4 inch Black Finish 2 inch Diameter
Brand: Axegrinderz
Relevance: Irrelevant
2 Pack - 2 inch round metal jack plates for speaker cabinets. Gloss Black Finish.

For use with 1/4" USA made jacks with standard 3/8" -32 Threads or 6.3mm Metric Jacks.

Requires a 1-1/16" to 1-1/4" mounting hole. Will sit very nearly flush with a 1" mounting hole.
2 Pack jackplates for speaker cabs
2" outside diameter
For 1/4" US spec or 6.3mm Metric jacks
Requires a 1-1/16" to 1-1/4" mounting hole
black finish - sturdy metal

Product: OneOdio Wired Over Ear Headphones Studio Monitor & Mixing DJ Stereo Headsets with 50mm Neodymium Drivers and 1/4 to 3.5mm Audio Jack for AMP Computer Recording Phone Piano Guitar Laptop - Black
Brand: OneOdio
Color: Black
Relevance: Irrelevant
BASS SOUND: Enjoy clear sound and comfort with the OneOdio Studio monitor headphones. Large, 50 millimeter speaker unit drivers combined with neodymium magnets; powerful bass, clear vocal, and crisp high tones form stereo sound
BUILT TO STAY COMFORTABLE: The soft padded ear cushions are designed for monitor headphones comfort and noise isolation. The headband is adjustable and stretchable for you to find the desired angle you like to fit in
NO MORE ADAPTER: DJ style coiled cord (9.8Ft Stretched) easily reaches from the TV or stereo to your chair. A standard-sized 6.35mm plug and a 3.5mm plug are included. They both are completely detachable, you can plug in the mixer you want to use
SINGLE-SIDE MONITORING: 90° swiveling ear cups for single-ear monitoring anytime; self-adjustable and flexible headband delivers a fatigue-free listening experience that can last for hours, ideal for mastering and mixing
Works with: All devices have 3.5mm or 6.35mm audio jack. Bass sound, durability, and comfort. These are the headphones you've been looking for