So, I took shipment of a used, but in perfect condition, Radial JDI. For years, I've either used whatever DI a venue had (rare) or simply used the DI on my head (normally GK heads). I've been fine, and never worried too much about it. Lately, my band has been using IEM's, and over time, I've found I prefer a straight signal from my bass and effects to be what I hear in my ears and I prefer to be able to EQ my amp to the room. I use a GK MB2-500 and found out by accident that the Gain pot conrols the output going to the DI. I usually throw the amp in it's bag every night, and alot of times the Gain gets moved. With how we have everything set up, it's a hassle to dial in the exact volume level night after night, even if I think it's close by sight. I finally broke down and bought the Radial from a fellow TB'r. Used it for the first time last night, and I am a very happy camper. Everything I've read about this DI is true- very flat frequency response, very uncolored, so that what I hear in my ears is only my bass and effects (Line 6 M9). The venue last night is very sensitive of being loud due to other people in the immediate vicinity, so my choice was to either put my amp behind a petition or go ampless. I chose the latter, and was just fine. Everything was clear and sounded great in my ears. The Radial is built like a tank and will definitely be able to take a ton of abuse. I have another gig tonight, where I'll probably use my amp, and another Saturday, so I should be able to give some more real-world input after that. Bottom line, if you're looking for a great sounding, uncolored, hefty DI, the Radial is definitely worth looking into.