My L30 just arrived today at a local shop and I bought it straight away after testing it (with d10s) over there. Here are some pictures of L30 with E30 on top of a coffee table (temporary place till I get a desk)
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Using usb input, source is a Hiby R5
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Side view to show how the power supply is connected. Using the Hexagon socket with usb ports. imho is adequate for the bulky and heavy power supply to remain stable
Overall, I'm quite happy with the performance. I especially like the -9db gain switch for iem usage.