Forums - Dynagrid Jr. Reviews and Impressions

Lon

Seasoned Member

"Love without
guts is
worthless!"
Philip K. Dick

Posts: 27538

Re: Dynagrid Jr. Reviews and Impressions
Reply #50 - 02/15/26 at 16:42:49

I think everything is fully broken in and situated and I've stopped "tweaking" the JR. and surroundings. . . and just really enjoying the improvements.

I still miss a bit the sort of "darkness at the edge of town" that my favorite rectifier with its black carbon sprayed interior brings in harmony with the black carbon sprayed 300B-Z tubes I use. . . . I was very surprised to discover that I am getting a tax refund this year, and so I ordered 845 Linlai tubes with the black carbon lining--they seem the same internally as the tube Steve provides, but with the lining--could be just the ticket for me. Should arrive in ten days or so.

In the meantime I'm happy to have JR. in operation producing some excellent sound.

Back to top

HR-1,ZBIT,ZROCK3,SEWE300B,Dynagrid Jr;Rega RP3+all GrooveTracer mods;PSAudio:PST+DSD DAC Mk II,NPC,PowerBases,AC-12 pwr cbls, Reference spkrcbls;Mapleshade SamsonV3;VeraFi Audio cpts VooDoo:Cremona+Amati interconnects;Stack EQ; headphones:Sennheiser HD800S,ZMF Or

IP Logged

ArtMan Seasoned Member Posts: 216	Re: Dynagrid Jr. Reviews and Impressions Reply #51 - 02/15/26 at 21:45:57 Does anyone know how much wattage the Dynagrid Jr. consumes?
Back to top	EcoFlow RIVER 2 Max Power Station Veri-Fi SDFB's w/Graphene Sluggos Holo Audio May Icon 4 Zen passive preamp Decware SE84UFO25/All Cryotone tubes Caintuck Cherry Magnum/Lii Audio F15's Decware DSR3S/DHC2/ZFOCUS cables IP Logged

Lon

Seasoned Member

"Love without
guts is
worthless!"
Philip K. Dick

Posts: 27538

Re: Dynagrid Jr. Reviews and Impressions
Reply #52 - 02/15/26 at 22:52:05

The product page says "consumption is 35 to 50 watts."

And the manual says this:

SPECIFICATION
DynaGrid Jr. has a maximum voltage of 500 volts DC. Most components are well below that, but if you have a fairly high power amplifier using an industrial version of a 5U4G you should research what the B+ voltage is and see that it is below 500 volts.

DynaGrid Jr. has a maximum current rating of 300 mA, higher than a 5U4G rectifier tube.

DynaGrid Jr. requires 120V power outlet and grounded power cord. The total power draw from the outlet is between 35 and 50 watts.

Back to top

HR-1,ZBIT,ZROCK3,SEWE300B,Dynagrid Jr;Rega RP3+all GrooveTracer mods;PSAudio:PST+DSD DAC Mk II,NPC,PowerBases,AC-12 pwr cbls, Reference spkrcbls;Mapleshade SamsonV3;VeraFi Audio cpts VooDoo:Cremona+Amati interconnects;Stack EQ; headphones:Sennheiser HD800S,ZMF Or

IP Logged

ArtMan Seasoned Member Posts: 216	Re: Dynagrid Jr. Reviews and Impressions Reply #53 - Yesterday at 02:09:03 Thank you Lon. I expected it to be a lot higher for some reason.
Back to top	EcoFlow RIVER 2 Max Power Station Veri-Fi SDFB's w/Graphene Sluggos Holo Audio May Icon 4 Zen passive preamp Decware SE84UFO25/All Cryotone tubes Caintuck Cherry Magnum/Lii Audio F15's Decware DSR3S/DHC2/ZFOCUS cables IP Logged

Lon

Seasoned Member

"Love without
guts is
worthless!"
Philip K. Dick

Posts: 27538

Re: Dynagrid Jr. Reviews and Impressions
Reply #54 - Yesterday at 10:56:16

One thing I have noticed now that the JR. has settled in and is sounding so good is that I notice tiny adjustments with the ZROCK3 to have an impact. Especially the gain--gain structure is everything in my system, and just a tiny increase or decrease to the gain from the ZROCK3 has a real significance in the overall sonic presentation.

The ZROCK3 is certainly a very useful refinement to the ZROCK technology, and I find Steve's choice of capacitors to be a very good one for this component.

Back to top

HR-1,ZBIT,ZROCK3,SEWE300B,Dynagrid Jr;Rega RP3+all GrooveTracer mods;PSAudio:PST+DSD DAC Mk II,NPC,PowerBases,AC-12 pwr cbls, Reference spkrcbls;Mapleshade SamsonV3;VeraFi Audio cpts VooDoo:Cremona+Amati interconnects;Stack EQ; headphones:Sennheiser HD800S,ZMF Or

IP Logged

JHC Senior Member Posts: 95	Re: Dynagrid Jr. Reviews and Impressions Reply #55 - Yesterday at 16:06:00 Lon, it will be interesting to hear whether or not your new Linlai tubes make any sonic difference. Please keep us posted.
Back to top	LNBH > Pine Tree Audio Conditioner > Sumiko Starling > VPI Signature Classic > Aric Audio Super MC/MM \| Cambridge MX10 > Pine Tree Audio 67+ > SE84UFO + DGR Jr. > Omega Super 8 HO XRS Music: F♯A♯∞, Life Metal, Nirvana Unplugged, Timewave Zero, Nebraska IP Logged

Kahuna Jack Seasoned Member Posts: 232	Re: Dynagrid Jr. Reviews and Impressions Reply #56 - Today at 06:14:34 https://www.hifi-amplifiers.com/en/full-music-electronic-tube-valve-c-142/fullmu... This may be an interesting choice???? Pricey so it's a gamble but if the tube is really tweaked to sound like a 300b ?? possibly could provide a different texture in Dynagrid .
Back to top	IP Logged

Lon Seasoned Member "Love without guts is worthless!" Philip K. Dick Posts: 27538	Re: Dynagrid Jr. Reviews and Impressions Reply #57 - Today at 08:04:43 Whoa! Pricey is right. I'm not in that zone of spending and won't be likely for a while. I still feel what I lack is the sound that the carbon lining may bring. I'm probably ten days or so away from receiving the tubes I ordered.
Back to top	HR-1,ZBIT,ZROCK3,SEWE300B,Dynagrid Jr;Rega RP3+all GrooveTracer mods;PSAudio:PST+DSD DAC Mk II,NPC,PowerBases,AC-12 pwr cbls, Reference spkrcbls;Mapleshade SamsonV3;VeraFi Audio cpts VooDoo:Cremona+Amati interconnects;Stack EQ; headphones:Sennheiser HD800S,ZMF Or IP Logged