Just thought you might be interested in this feedback. At this point, I've owned the following preamps. It's a little scary when you look down the list. Ampeg SVT-IIp Ampeg SVP-Pro Ampeg SVP-CL Aguilar DB-659 Aguilar DB-924 Alembic F-1X Demeter VTBP-201 Eden Navigator Raven Labs PHA-1 Sansamp RBI Sansamp BDDI SWR IOD Sadowsky Outboard Trace V-Type A couple of these (the DB-659, SVP-PRO, and SVT IIp) I only had a few days and sold or returned because of mechanical issues (transformer hum, noise, etc.) That said, the issues didn't prevent me from getting a fair feel for the functionality of the unit. My main pre for blues and rock has been the IOD--for about two years. But lately, I relized I had the basis for a smaller-venue rig, I just needed a preamp. Since I play everything from Fleetwood Mac to Pink tunes, flexibility was important. After thinking back over the units I'd owned and doing some reading, I decided to try the Navigator. As luck would have it, I found an Eden WP-100 Navigator preamp in "like new" used condition. One year old, bought from another TB'er, who purchased it from Bass Central in 04. Came with 4-function footswitch. Perfect condition. If you've seen the unit, you know it's about the most complicated thing going. Lights, all kinds of balance controls, compressor, semi-para EQ. Phew! But like with anything, you bypass as much as possible, start "flat", and work from there. And frankly, it wasn't hard to do that on the Eden--it's pretty clearly laid out. What's been VERY interesting about this unit is the way that two KEY controls offer up an unparalleled diversity of tones. The first is the "tube" control which blends in tube artifacts and actually can get pretty overdriven. But, I found the overdrive a little rougher than, say, the gooey goodness of the IOD and I really only go up to about halfway before it's enough. So, unlike the Alemic or V-Type, you can get a harder rock sound if you want it. The second is the "enhance" control. This pre-eq control is right after the tube stage and I think the best way to sum it up is to imaging a flat Alembic at one and an SWR SM-500 at 10. Turning that enhance control produces an amazing conversion in tune--from mid-heavy and less distinct to crystal clear "hi fi" bass tone. The footswitch includes a bypass for this control, so you have two very different sounds available there. And what's also nice is that the volume doesn't drop too much in switching. These two controls together give me the ability to get close to most of the other preamps on the market. Other cool features are a footswitched tuner mute, which doesn't "bang back" when disengaged--the volume ramps up slowly to protect your rig (and the audience!). The "studio quality" compressor does the job nicely without getting in the way. I would rather that the "default" setting be "off" instead of on, though. It's wierd to look down at your footswitch and have the light ON over "compressor bypass"--you have to double check yourself. Wait, uh, is that ON or OFF? Sounds simple enough, but on the gig, it's easy to get confused--I know, I've played tunes with the compressor on when I didn't mean for it to be. Anyway, it does a good job regardless. The semi-parametric EQ is more powerful than any EQ ought to be. I've read complaints from people who say they can't get the EQ right--because they're introducing major alterations without knowing it. The knobs on the faceplate are very high-quality and move in subtle detents--you could probably run the range of an SWR eq in three clicks, with 17 more to go! I don't mess with dual channel crossovers or stereo effects, so I don't need any of those features. There are like three effects loops, which I also don't use. There are lights across the bottom of the unit that look like christmas lights but whick serve no function except to look funky and provide illumination. I wonder why somebody doesn't ever put some of those on the BACK, since you can never see it if you're using a power amp-depth rack. Knobs on the faceplate are color coded which is helpful I guess, but also contributes to the Eden's overall "bling" look, which ain't everybody's bag. But it sounds so good, I could care less what it looks like. Strengths: Versatility, great tone, light weight, awesome construction (I mean it, open it up and say "wow". best of ALL the pre's I've owned). OH--there's a jumper inside that you can use to double the output voltage for those hard-to-drive power amps--YEAH!!!! Weakness: Complexity has its dangers--battlefield weapons are kept simple for a reason. Tube--the stock tube (or at least the one sitting in mine when I got it) was noisy. When I dropped a new 7025-rated 12Ax7 in, bang--silent. Same for the AC cord--the one that came with my unit was defective and picked up interference. All in all, I would HIGHLY recommend this preamp to anyone who is looking for several great tones and isn't afraid to tweak knobs. You can get VERY close to the Alembic, SVP-PRO, SWR Grand Prix, while still having something unique to offer. The ability to adjust/incread output voltage was a HUGE selling point to me. Why don't more makers do that? Anyway, it's a few bucks more, but I think it definitely worth it. If anyone ever has questions about the unit and its features/reliability, send 'em along!