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AUDIO FORUMS >> General Discussion and Support >> DynaGrid Jr Impressions
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Message started by Steve Deckert on 09/29/26 at 03:18:52

Title: DynaGrid Jr Impressions
Post by Steve Deckert on 09/29/26 at 03:18:52

I realize there is already my original design log thread, and a review thread on this, but there really isn't a simple place to get to the meat of it, which is simply this: If you have a DynaGrid Jr, 1) what product is it in, 2) what rectifier tube did it replace, 3) what do you hear different.

So far we have built a rather large number of these things and apparently many of the buyers are forum readers but not posters.

Thanks,

Steve

Title: Re: DynaGrid Jr Impressions
Post by Lon on 09/29/26 at 10:56:15

I'll add my info as concisely as I can.

My JR. is serving as the rectifier for my SEWE300B amp.

It replaced several favorite rectifiers, notably a Psvane 274B-Z, and a Linla 274B-D, and an Amperex 5R4WRGB. The Psvane was used most often--a fine rectifier.

What I heard most different from the rectifier in the amp is an increase in clarity and dynamics while maintaining a great frequency balance. I did a lot of tailoring of power and isolation and I have several times reinserted a rectifier into the amp for comparison. . . and gone back happily to the JR.

Title: Re: DynaGrid Jr Impressions
Post by Hearafter on 09/29/26 at 16:48:01

I use my Dynagrid Jr. with my Taboo MkIII.
I have compared the Dynagrid to several rectifiers: GEC U18/20 and Mullard FW4/500 (both with adapter), Stradi 5U4G, Psvane 274-Z, RCA 5R4GY ‘58, RCA 5U4G, Cryotone 5U4G, Sylvania 5U4G. My preferences are listed in that order. I could be very happy with these rectifiers if I hadn’t listened to the Dynagrid. Each time I performed a comparison I thought the rectifier sounded good until I installed the Dynagrid. The Dynagrid just sounds noticably better in every way. Improved clarity, micro details, imaging, soundstage, fuller sound presence that fills the room and bass clarity and presence. The Dynagrid has no plans of leaving the Taboo.