Just some initial impression of first night listening to Susvara paired to Glenn el3n tube.
Well, it is nothing short of impressive and breath-taking moment. Firstly, susvara itself is seriously a God-tier pair of headphones compared to all my previous cans - ZMF VC, Rosson RAD-0, LCD-X etc. With Gel3n under two tube mode and volume knob at around 12 o'clock, I would say it drives Susvara with full authority - superb dynamic, deep and hard slamming taunting bass, excellent separation and imaging, buttery smooth vocal and high. I know a lot of Susvara owner paired it with speaker amp, but till then, I must say I enjoy every single bit of it coming out from Gle3n so far, and don't think it is underdrive in any single way.
I am sticking to this setup for a little longer while, shall there be an opportunity to compare a speaker amp, I will do an A/B comparison and see how does Gle3n stacks up against speaker amp