dbx PB-48

48 Point 1/4" TRS Patch Bay
dbx PB-48 image 1
dbx PB-48 image 1
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dbx PB-48
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The PB-48 is a 48 point patch bay (24 pairs) with TRS 1/4" phone jacks. The internal configuration offers 24 Card Assemblies with 2 jacks on each Card. Each Card can be positioned for half-normalled or non-normalled use, or de-normalled for straight throughput. This well-designed patch bay even provides pure nickel/silver alloy self-cleaning contacts. Clean up your rack with the PB-48 from dbx.

dbx PB-48 Patchbay Features at a Glance:
  • 48 patch points
  • 24 pairs on 24 cards
  • Each pair/card can be set to any normalled configuration or entirely de-normalled
  • All connections are 1/4" TRS
  • Contacts made of pure nickelsilver

Tech Specs

Analog/Digital Analog
Number of Points 48
Format Rack
Connector Types - Front 1/4" TRS
Connector Types - Back 1/4" TRS
Function Mode Normal, Half Normal, De-Normalled (Thru)
Height 1.74"
Depth 2.6"
Width 19"
Weight 2.3 lbs.
Manufacturer Part Number DBXPB48V

Customer Reviews

Based on 6 reviews
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dbx PB-48

As many other dbx products, this is a very useful and solid gear that avoid problems managing the wire.
Music background: Hobbyist, Student

excellent and still going strong

I purchased this to make trying different preamps in my home studio rack a lot more efficient. I was tired of reaching behind the rack and hooking up things in the dark basically. The dbx is actually very well built and I have never had a problem with signal flow or anything breaking or coming loose. Im not sure why others have had issues but I have never had an issue with the dbx and was steered towards buying it from the salesman saying it had nickel contacts. You can set this up via normal, thru or half normal like others and it couldnt be easier to get up and going in your studio. Patch bays take a fair amount of abuse from constantly plugging and un plugging leads and mine still looks like the day I purchased it 3 years ago. I also compared it to the nutrik and was sold instantly on the dbx. Definitely give this one a shot. Excellent product!
Music background: Serious Hobbyist


Hmmm, you can de-normal each channel by inverting its circuit board. (the manual shows how to do this.) Would much prefer a switch for this as I've seen on other patchbay models. The channels all come pre-configured as normalled. If you can find another patch bay that uses a switch to toggle the settings, go with that instead. Also, set this in between 2 rack units as the circuit boards will loosen up and fall from the weight of the attached cables you may/may not have.
Music background: Home Studio Sound Engineer

Most corner-cutting design I've ever seen in a piece of studio gear

If you Google for images of this patch bay, you'll never see a photo of its underside. That's because it literally doesn't have one. Nor does it have any sides. This patch bay is not a solid box. It's basically an L-shaped, open metal frame to which 24 1/4" modules attach. The modules' circuit boards are completely exposed. Each of the 24 four-jack modules is secured to the patch bay frame with only a single plastic nut that screws onto plastic threading. (No, I'm not kidding.) I installed this patch bay in my studio the other day, and even though it's functioning, I've already begun shopping for its future replacement because I can't imagine this patch bay will last more than a year before the plastic jacks crack or strip from use, or the modules are compromised by dust/debris. I also racked my patch bay upside down so that the labeling strips were on top, and to give each module a little firmer seating in case its single, plastic mounting nut ever loosened. I used a black Sharpie marker to draw division lines through the label strips between the modules. Removing a module to flip and de-normalize it requires unscrewing its threaded nut. Unfortunately the modules are too close together to seat a metric socket onto the nut, so you either have to fumble with a half-seated socket or try to grasp it with a needle-nose pliers. It took me a half-hour to de-normalize all 24 modules. In summary, for a hundred bucks, I'd at least like my patch bay to be enclosed with all six sides. And I'd certainly like to have more than one plastic nut holding in the modules. Given it's lackluster design and the most corner-cutting construction I've ever seen in a piece of studio gear, in no way would I value this product anywhere near $100. But, because it is working for the time being, I am obligated to at least give this product an "OK, Average" rating of two stars.

PB-48 Patchbay

I find the inputs on the jacks to be somewhat loose. Compared to my Neutrik patchbays, this one rates lower on the scale. I believe it will do the trick but if I need another 1/4" TRS patchbay, I'll go back to Neutrik.
See also: Patch Bays, dbx, dbx Patchbays