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PAXPHIL LJ20 BK Flush-Mount Cylinder Output Jack, Black
The PAXPHIL LJ20 BK is a flush-mount cylinder jack for a 1/4" plug in a black finish that all but disappears on a dark body. It screws into a guitar or bass body, and its knurled flange stays flush with the surface. The modular 3-contact design with a large terminal works with both passive and active electronics. The body is 40 mm long, 55 mm overall.
🏆 SoundsGood — official Paxphil dealer in Ukraine: genuine gear only, with full warranty and service support.
A Black Jack for Dark Instruments
On a black or dark body with black hardware, a chrome socket is the only shiny spot. The black LJ20 BK makes the jack inconspicuous and completes the understated look of a «blackout» instrument.
Not Just for Guitars
According to JAM, the LJ20 can also be mounted in the wall of a wooden pedalboard — as an input jack for the guitar cable, with a patch cable running on to the pedals. And the third contact, as JAM explains, controls power to active circuits so the battery does not drain with the plug out.
Check the Hole Depth
The jack body is 40 mm long, and the contacts add about 10 mm — 55 mm in total. If space in the cavity or behind the wall is tight, check these figures in advance — a cramped space may call for a shorter jack.
Specifications
| Type | Cylinder flush-mount output jack, modular |
| Plug | 1/4" (6.35 mm) jack |
| Contacts | 3 |
| Terminal | Large |
| Mounting | Threaded, screws into the body |
| Body Length | 40 mm |
| Overall Length | 55 mm (with contacts) |
| Finish | Black |
| Model | LJ20 BK |
| Included | Jack, as shown in the product photo |
| Country of Manufacture | Korea |
| Warranty | 12 months (electronic and mechanical components) |
What's Included
You get one black PAXPHIL LJ20 BK jack, as shown in the product photo.
Who It's For
The LJ20 BK is for the owner of a guitar or bass with black hardware who wants an inconspicuous jack, the musician building a wooden pedalboard with a built-in input, and the tech replacing a worn flush-mount jack.
Frequently Asked Questions
What is the PAXPHIL LJ20 BK?
It is a black flush-mount cylinder jack for a 1/4" plug: it screws into the body and its knurled flange sits flush with the surface.
How long is the jack?
Per JAM, the body is 40 mm long and the contacts add about 10 mm more, so 55 mm in total.
Can the LJ20 be mounted in a pedalboard?
According to JAM, yes: the jack can be mounted in the wall of a wooden pedalboard as an input for the guitar cable.
How does the LJ20 BK differ from other Paxphil jacks?
From the LJ20 CR and LJ20 GD only by its black finish. The LJ45 is a chrome cylinder with a smooth head, and the LJ15 and LJ35 are endpin jacks.
What is the third contact for?
For active electronics: it switches the circuit's power on only when a plug is inserted. On a passive guitar it can stay unconnected.
Is this genuine Paxphil, and what is the warranty?
Yes. SoundsGood is an official Paxphil dealer in Ukraine; the warranty is 12 months on electronic and mechanical components.
🚚 Shipping and Payment
🏆 SoundsGood — full warranty and service support
✅ Quality guarantee — genuine instruments only
🏪 Pickup — Kyiv, free
🚚 Nova Poshta / Ukrposhta / Meest — 1–3 days
💳 Installments — PrivatBank, Monobank
🎸 Order the black PAXPHIL LJ20 BK jack at SoundsGood! ⚡