Anyone running a 5751 in their preamp?

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griff
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Anyone running a 5751 in their preamp?

Post by griff »

Got a couple of JJ 5751's on order. I'm hoping they smooth out the Overdrive a little on my Jet City 22h. Anyone use these tubes?

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Re: Anyone running a 5751 in their preamp?

Post by GrantB »

They are great at lowering the gain of a particular section. It may not smooth out the tone but it will possibly reduce fizziness.
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Re: Anyone running a 5751 in their preamp?

Post by godgrinder »

I tried a JJ one in my Soldano, it did lower the gain but it made the low end sounding really hollow in a strange way. I much prefer the JJ ECC83MG for lowering the gain.
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Re: Anyone running a 5751 in their preamp?

Post by griff »

Thats strange. I hope I don't see that problem. I have a feeling I'm going to get the same result just by turning down the gain anyway ha!

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Re: Anyone running a 5751 in their preamp?

Post by Slowy »

Used a 5751 for a long time. I'm a fan of lower gain V1 tubes. Have dropped again to an AT7 in my Jansen. It's given me more headroom and way more volume than I know what to do with.
The design of your amp and your aural expectations mean you should just experiment. My AT7 is a brand new old GEC. It doesn't sound anything like the equivalent JJ at all.
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Re: Anyone running a 5751 in their preamp?

Post by sizzlingbadger »

A 5751 is very similar to a 12ax7 just low er gain. AT7 is a different beast not just lower gain.

I used a 5751 in my Orange amps in the past to tame the gain, it gives you more control 'sweep' on the gain knob but doesn't usually sound much different, they can lose a little sparkle though.

Backing the volume control on the guitar off a bit can help a lot with top end harshness when playing at lower volumes.
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