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RJ-Chicago
38
Feb 21, 2019
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I received my Koss stats today and they sound great. The separation is phenomenal. Soundstage is very good. Just in early listening right now. But wanted to ask, has anyone else notice that the RCA jacks on the power unit are very set in? In other words I can’t hook up any quality RCA cable with th usual collar because they aren’t able to plug in because the RCAs are set in and the box blocks the cable collar edge. So I have to use the cheap RCAs that came with the unit. If this is supposed to be this way, can someone please recommend a quality RCA cable with collars like these stock ones? Please see the photos and let me know if you have this issue or is mine defective or both. Thanks. 
r33tom
15
Feb 21, 2019
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RJ-Chicagothat is normal all of them are built like that including the one i have. read up on all the esp 950 reviews out there, a number of them point this out as a poor design choice to recess the rca inputs.
RJ-Chicago
38
Feb 21, 2019
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r33tomOk. Thanks. I dig through my cables to see what would fit. Shunyata Venoms don’t fit. But Transparent and Schiit Pysst cables do fit. Thank goodness.
Barondla
146
Feb 21, 2019
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RJ-ChicagoAs already mentioned that is the way they were designed. But, were there any massive RCA connectors 30 years ago? Doubt it. Wouldn't be surprised if Massdrop changes this in later drops. They could just enlarge the holes around the RCAs to allow more cables to fit.
Recessed connections do have one nice benefit. They can prevent damage, especially in shipping and moving. These were originally designed as portable headphones. I thought portable use was a little crazy. Then I found how light weight the energizer was. I could see a traveling salesman having this setup in a suitcase for listening on the road.
RJ-Chicago nice to know the Transparent & Schiit fit. Which cable sounds better?
JoeTori
7
Feb 21, 2019
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RJ-ChicagoHi. In anticipation of this, I ordered a pair of Kimber Kable Silver Streaks with the standard Ultraplate connectors. I'm happy to report they work great. And, they're a nice cable, consistent with the rest of my silver interconnect cabling.
A community member
Mar 6, 2019
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RJ-ChicagoAs others have mentioned, that's the way they are designed, but there is an easy fix if you are so inclined. Just remove the four screws holding the back panel on, remove the panel and drill the holes out larger. I suggest putting the panel in a vice and using a stepped bit if you have one.
I had this same issue some 20 years ago when I purchased my ESP950 (now long since sold off). I complained about this when I had to send my amp to Koss for service (volume control went bad due to extended disuse). They returned the amp with the original panel as well as a new one with the holes enlarged... talk about great customer service!
(Edited)
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