Recommendation for balancing with JLM Dingo + 990A+ + Jensen Transformer

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Ingenia
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Joined: Tue Jan 06, 2026 6:39 pm

Recommendation for balancing with JLM Dingo + 990A+ + Jensen Transformer

Post by Ingenia »

Hi everyone,
I’m working on a project to balance the master output of a Trident Series 70 console, and I’d like to gather some opinions and real-world experience.
My idea is to use the JLM Audio Dingo PCB as the base. On that board, I’m planning to install a JLM Audio 990A+ DOA, intended to drive a Jensen JT-11-BMCF output transformer.
Before moving forward, I’d like to ask a few specific questions:
Do you think all these components work well together?
Specifically: the Dingo PCB with the 990A+ and the Jensen JT-11-BMCF transformer.
Any recommendations or precautions to consider with this combination?
The Dingo PCB includes components intended for “standard” op-amps.
If I install a 990A+ DOA instead of a conventional op-amp, are there any components on the PCB that are unnecessary or that should be removed or modified?

Thanks in advance for any help or insight

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Joe Malone
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Location: Brisbane, Australia
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Re: Recommendation for balancing with JLM Dingo + 990A+ + Jensen Transformer

Post by Joe Malone »

Ingenia wrote:
Fri Jan 09, 2026 7:19 am
Hi everyone,
I’m working on a project to balance the master output of a Trident Series 70 console, and I’d like to gather some opinions and real-world experience.
My idea is to use the JLM Audio Dingo PCB as the base. On that board, I’m planning to install a JLM Audio 990A+ DOA, intended to drive a Jensen JT-11-BMCF output transformer.
Before moving forward, I’d like to ask a few specific questions:
Do you think all these components work well together?
Specifically: the Dingo PCB with the 990A+ and the Jensen JT-11-BMCF transformer.
Any recommendations or precautions to consider with this combination?
The Dingo PCB includes components intended for “standard” op-amps.
If I install a 990A+ DOA instead of a conventional op-amp, are there any components on the PCB that are unnecessary or that should be removed or modified?

Thanks in advance for any help or insight
That combination will work great. Very powerful and clean with high headroom and only the warmth of the output transformer.

The current red dingo pcbs like below have all parts NOT needed for DOA marked with the number in [ ] brackets like [C13]
And other parts for special builds in ( ). These are not needed as well.
Image
Joe :-)
JLM Audio
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