Massdrop x Eddie Current ZDT

Massdrop x Eddie Current ZDT Jr.

Massdrop x Eddie Current ZDT Jr.

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Hi everyone,
It has come to our attention that a few drop participants are experiencing a hum in one or both channels of the Massdrop x Eddie Current ZDT Jr. We wanted to let you know we are aware of this issue and are looking into possible solves for it.
If you are experiencing this issue with your unit, please reach out to our Community Support team for further assistance via your transactions page: They will be happy to assist you in either a return and full refund or in repairing your amp as soon as we determine the cause of the issue.
We apologize for the inconvenience and are working with the manufacturer to resolve this as quickly as possible, so you can enjoy your amp as intended.
Thank you for your patience to those who have experienced the issue, we are working in the background to see what we can do!
Hey Everyone!

The User Manual is available for download here:

On the Drop Page:
Hi everyone,

We’re checking in to let you know the Massdrop x Eddie Current ZDT Jr. is on its way to our warehouse in New Jersey! The units should arrive by the end of this week, and once they arrive they'll go through quality control checks. We estimate that the units will start shipping by the end of next week.

Thanks to everyone for their patience with this delay, and we’re looking forward to you receiving the first production of the Massdrop x Eddie Current ZDT Jr.!
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I am sorry you don't have yours yet. I love mine, it was in my opinion worth the wait.
Good to hear!
Another shipment delay.. Hope the next drop doesn't have as long of a wait. So disappointed with Massdrop's handling of this product.
Thanks for the update on the shipment delay and the latest expected shipdate! Please keep us updated if that changes. Sounds like the folks who've gotten theres are enjoying them!
I just received an email that my shipment has been delayed until mid-August. What is the explanation for this latest delay please?
Does anyone know if the 6N24P tubes are equivalent to the ECC89?
Would it damage this amp to swap them?
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Thank you! The stock tubes sound great but just want to try a few different tubes.
The first tube has a greater impact on the sound. For the first tube there are much more replacement options.
For example Russian 6Z2P, 6Z38P and another two million the same tubes)
Are these shipping out in waves? I haven't received any notification of shipment (checked spam folder as well as transaction history on my MD account). Anyone else still waiting on shipping info?
I'm also still waiting for it to ship out. Massdrop, can you please give us an update?
Totally blanked on the fact that this didnt come with rca cables, anyone have suggestions?
Cardas Iridium RCA cables would be my choice. I use Cardas Cables in my home audio systems.
Just get monoprice
ZDT, Jr. showed up yesterday. Low hum when powered on. Has not gone away. If it doesn’t this is the second MD gem I have that hums in less than a year. Starting to realize that I need to quit buying Audio gear at discount. The CTH is still unable to stack with anything or it has a static sound no one can explain or fix. It’s all so tiresome
I will buy it off you if you no longer want it?
Anyone else experiencing hum? Had the amp for a few days and had it warmed up but the hum is still here.
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We're going to test some shielding after receiving instructions. Typically, European and Russian partners are on vacation during the month of August but we are definitely still working to have some answers for you.

We have also heard a couple of users report hum dissipating after lots of hours with the amp...has anyone heard improvements or those who have hum still have consistent hum?
My unit from the first shipment hums also -- changes in position relative to other electronics do not help, nor do cheater plugs and other fixes. Just about bearable on HD650s but painful and distracting on lower-impedance phones and absolutely unendurable on IEMs. Is a fix on the way? A replacement or refund program?