I had to Google TNE as never heard of the acronym before and the first page that came up is a seller of the product and they say the following (they also call it test base):
"Testosterone Base aromatizes very easily and therefore estrogen build up and side effects can become an issue for users sensitive to these problems or those choosing to use a high dose of this compound. Therefore, when using Testosterone Base, bodybuilders often choose in incorporate an anti-estrogen.."
And second Google result, also a seller states:
"Obviously TNE is a very powerful form of testosterone. Given its ability to act so quickly on the body, also makes it prone to cause many side effects. To start with, estrogen levels may rise very quickly with testosterone suspension, leading to the usual estrogen related side effects.
Gynecomastia can also develop very rapidly during a cycle, and in many cases this drug will be intolerable without additionally taking an anti-estrogen. Many athletes take anti-estrogens immediately upon the start of a cycle containing the use of TNE in order to prevent such side effects before they become a problem."
This is just regarding the convo on how well it aromatizes. These statements don't compare it to test with esters attached, but seems like it should aromatize heavily. Felt like sharing this, since went on searching.