From the looks of it, EB01-E looks exactly the same as the original EB01 and the fact it's name is only one letter shy makes it even more confusing. However, from what I've read, the first edition seemed to suffer from some troubling noise issues, and since EB01-E is completely silent, then its quite clear the insides are different. As they should, since it's been at least 8 years since the previous version was released.
So, let's open it up and see what it has inside.
First things first, you are greeted by a clean, neatly arranged PCB, with the XMOS XS1 TQ128 audio MCU right next to the center. This one is an USB 2.0 compliant chip, supporting low-latency asynchronous transfer mode. It accepts all common high-quality sampling rates, such as: 44.1, 48, 88.2,96, 176.4 and 192kHz, and uses 24-bit stereo or monoaural audio.
As you can see in the image below, EB01-E features the PCM1798 DAC, a 24-bit, 192-KHz, Burr-Brown digital-to-analog converter from Texas Instruments. This lil chip is used in plenty of DACs, from portable devices like FiiO's Kunlun E18 to large "premium" items like the HFN-PS Audio. As it stands, it's a single DA converter with two D/A ouput channels.
Lastly, we have the NE5532 bipolar-input operation amplifier with very low noise, high-output drive, and low harmonic distorsion. Overall, a more than decent op-amp.
For the $100ish price-point, SilverStone's EBO1-E has a pretty good internal construction, using some very premium components exactly where it matters.