Holy cow! this thing is next level! Ive owned tube preamps before and this thing is legit! All the signs are there, tube grit, tube punch, tube chunk, TUBE SLAM DUNK! Its got that chewy tubey goodness and though i can only compare it to my bogner twinjet, its definitely sounds..... Bognery. As far as "feel" goes, it 100% feels like playing a tube amp and not just a distortion pedal or whatever. It came with that AMT ss tube which sounded totally legit! I tried out a tungsol and got a bit more beefy lows. Not a huge difference but noticeable. Very cool. Want to swap back as my ears may just be tricking me, its that close. I absolutely HAVE to get more of these things! Im 100% sold. Getting actual tube goodness from something significantly smaller than a boss pedal is just nuts. Thing is TIIIINY. Not many videos of these, but now theres one more! And yes, my bass was not plugged in. Just playing along for anyone that cares to see what i was playing can do so. Thats how i do all my vids. Anyway, on with the show!