I've been an Alembic player since 2003. My first was an '83 Spoiler Exploiter, followed by a limited edition John Entwistle Tribute Spyder, an '03 Europa, an '04 Dragon's Wing, a '91 Essence, an '06 Stanley Clarke Signature Standard, a '92 Essence, and a Custom Series II Entwistle Exploiter Replica. I've used, as a result, their basses with Essence (filter, pan, volume), Europa (filter, pan, volume, treble/bass boost/cut switches), Anniversary (2XQ, 2 X filter, pickup selector switch, 2 X volume), Signature (2XQ, 2 X filter, pan, volume), and Series II (on my custom, 2 X continuously variable Q, 2 X filter, 2 X volume, 2 X master volume (with switch to choose between them), pan) electronics. I've used short scale (SC), medium scale (Spoiler), and long scale (all the others). Some have had LEDs (Europa, Dragon's Wing, Series II, Spyder Tribute) and others not. Some have been very heavy (Dragon's Wing, to me) and others relatively light (Series II - wood backplates help A LOT). A few thoughts on some of the main points in this thread based on my experiences as an Alembic player.
Expense - they are expensive. Stipulated.
Weight - they can be heavy. However, if you order a custom, they'll chamber the body if you wish, or used lighter hardware, wood backplates (which cost more money), etc. to make it lighter
Ergonomics - not for everyone. The Dragon's Wing, for example was great to sit down with, but in my experience not so much standing up. It sounded amazing to my ears, though. Same goes for the JE tribute Spyder. Long, long, long neck. The Essence and Europa were/are great ergonomically, as is my Series II.
Hippie Sandwich and Affect on Tone - a matter of taste and opinion.
I've visited the Alembic factory in Santa Rosa, and have spoken to Ron, Mica and Susan in person. Folks have to remember that this is a family owned business, not a mega producer like Fender, Gibson, etc. Things cost more money for them as a result as they cannot buy in bulk like the larger companies can.
Then, there is the fact that the cost of goods and services have been rising over the years. Think Fender doesn't pass that on to you, the consumer? Think again. For Alembic to remain viable in a global market, as a small, family owned business their prices have to reflect the cost. If they didn't, they'd find themselves out of business very quickly.
Quality and Craftsmanship - Second to none. For example, Ron Wickersham built the pickup winding machine that winds their pickups. Sanding blocks are hand made to fit the person using a particular block. They make all their own bridge hardware and bridge blocks. Nuts are hand cut, as are bridge saddles. Inlays are hand cut, and up until recently Alembic made their own circuit boards. Tony Stoufer hand wires their preamps and SF-2s (I saw him doing this when I visited). Their pots are sealed, meaning no dust every gets in them. Their jacks are the same as those that used to be used in telephone switchboards - in other words made for years of continuous use. Knobs use collets, not screws to attach them to pot posts. All screws used to attach backplates are threaded into metal screw inserts glued into the body. Body cavities are shielded using a special silver impregnated paint, meaning absolutely no noise whatsoever. In short, what separates Alembic (and other boutique makers) from your average mass produced instrument is the dedication to, pursuit and achievement of gnat's ass detail. Every new Alembic I've purchased was perfect, and I mean perfect. I could not find one flaw in fit, finish, playabilty (for me) or performance. These folks are obsessed with quality and it shows.
Employees - some of them have been there for years. Outside of Susan, Ron, Mica, etc., James and Tony have been there for years, plying their craft as they always have. I can't speak for the mass produced companies, but I find it comforting to know that the same folks who put together John Entwistle's Alembics put together mine.
Customer service - flawless. Every time I've needed help with something (which has been rare) I've received it. It is sometimes better to call them rather than email (Mica is the main POC for a lot of these kinds of things, and she has other duties), but their response, in my experience has always been prompt and on point.
Customs: It took four years to make my custom. Some of that wait was due to getting some details correct. Some of it wasn't. To say that I was frustrated at times is an understatement, but in the end it was worth the wait. It is an amazing instrument, and nothing else I've ever owned sounds like it (I currently own 28 instruments, to include Gibson, Fender, Rickenbacker, Sadowsky, Pedulla, Parker, Lakland, etc.).
I agree that if you want to try an Alembic, buy one used. Most Alembic users take good care of their instruments, so you'll be getting a nice bass at a much lower price. If you don't like it, you can flip it for what you paid or close to it. As others have noted, they're not for everyone.
Electronics - the filters can be a challenge to those used to "conventional" electronics. Basically, the filters act like a strainer - you keep what you want in your tone at a certain frequency (the stuff that flows out of the strainer) and get rid of the stuff you don't want at a certain frequency (the stuff that remains behind in the strainer). The Q acts as a boost - you set the frequency with the filter, and the boost gives you a dB "oomph" at that frequency, particularly on the initial attack. Can everyone hear this? Maybe not. But having used them for ten years, I can. Again, not for everyone.
Wow Factor - like any low volume boutique, particularly those not shaped like traditional instruments (e.g., Fender, Gibson, Rickenbacker, etc.), there is an associated "wow" factor involved. I often get asked what kind of instrument it is, I tell them, and usually the words that follow are "awesome," "it sounds amazing," "beautiful," etc. If this kind of thing is important to you, an Alembic (or other boutiques) can deliver in spades if my experience is any example.
Bottom Line - Are They Worth The Expense? - like any bass, an Alembic is only worth it to those who play them and like them based on the music being played, tones required, etc. What works for one individual may not work for another based on these and other factors. It all boils down to personal preference. Yes, a cliche, but when you're looking at a very expensive instrument vs. an inexpensive one, that cliche goes a long way.
My advice, as a long time Alembic owner to those who want to try one is to try to find someone who owns one and will allow you to try it. Failing that, buy a lower level (Epic, Essence, Excel, etc.) model and try them (keep in mind the Epic and Excel are set neck, whereas the Essence is neck through; also the Essence has a filter, while the Epic/Excel have traditional treble/bass controls). You won't be out much cash if you decide it's not for you as noted above.
For me they work. I still have my Series II, my '91 Essence (which I used in Iraq) and my Stanley Clarke. I have no plans on selling them any time soon, either.
Alan