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JBL 7510A

JBL 7510A

4 4 out of 5, based on 2 Reviews

This multi-channel preamp / automixer is upgradeable to 24 total preamps, each module containing 4 preamp channels, switchable gate, master output, and direct outs on all channels(this is key).


2nd June 2015

JBL 7510A by FeatherAndTape

  • Sound Quality 5 out of 5
  • Ease of use 3 out of 5
  • Features 3 out of 5
  • Bang for buck 3 out of 5
  • Overall: 3.5
JBL 7510A

Requires either rev log pots or hard-wiring resistors in place of jumpers on the back of the machine to make useable for tracking due to its inherent gainy input.

Once this is figured out, expect a lively yet smokey preamp that fattens up drums, guitars, and certain vocals. It kind of bullies the details of the source--let's all the highs thru but not without pushing them around a bit first.

The gate sounds cool if you're trashing out a sound with gain, but on sources you want to sound like reality, disable it. You can also remove a leg of a resistor and rip an opamp out to iso the preamps from all the auto mixer and gate circuitry. It's not hard to work on and relatively cheap for the sound quality and learning experience.

The JBl / UREI 7510a combined with something clean like a Millenia or Sytek can get a lot of jobs done and teach you something in the meantime.

7th September 2017

JBL 7510A by lostwars

  • Sound Quality 4 out of 5
  • Ease of use 4 out of 5
  • Features 5 out of 5
  • Bang for buck 5 out of 5
  • Overall: 4.5
JBL 7510A

Comes in a variety of configurations with 4 preamps on one card a total of 6 cards can fit in the chassis - 24 total preamps.

You will have to hard wire some resistors on the remote panel behind the unit to lower the input gain but after you do that or wire a pot for it, its plug and play.

I skip using the "master section" and gate. Think of it as 16 preamps with a power supply where every preamp has a direct out.

I have a stage box hooked up to it for 16 pres and all the direct outs are wired to a patch bay for conversion. Sounds great on a number of sources - they are utilitarian UREI preamps. Great design, great sound, they do one thing and do it well.

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