Feature:
Besides the pre-programmed emulations you get a XLR direct out with cab simulation, a phone jack preamp out for direct out without the cab simulation, full tone controls, mini-jack in for CD/MP3 and a headphone jack. That makes this good as a traveling practice amp and I've killed hundreds of what would have been wasted hours staring at a TV in hotels/condo timeshares using this amp for headphone practice with my IPOD. I really like the tone controls and they work exactly as you'd expect. The compressor is nearly invisible and records well from the direct out and the recorded tones responds well to further processing including adding more compression and limiting in post-production without sounding clipped. I do not like the SYNTH setting, it is worthless for anything I do. I wish they'd put the BRIT tone where the SYNTH setting is and had made you go to the manual to find a hidden SYNTH setting instead of the more tasty BRIT tone. That really is the only major complaint I have. Anyone who actually expects a single 10 inch speaker and 75 watts to create a really lush low end and make their pants flap in the breeze should have their head examined in the first place.

Quality:
I've had mine for over two years. When I picked this up I had actually gone to pick up a Markbass 12 inch mini-combo but saw the Line 6 Studio 110 and came home with it instead of the MarkBass and also with $600 still in my pocket. I've taken the Studio 110 to about 100 rehearsals, used it at home for at least an hour a day for a period of over a year, I've traveled with it on vacations and business trips. I've never dropped it or mistreated it though. (Tip: A garbage bag makes a handy cover for dashing it into rehearsals during rain storms.) If I had any complaints about the quality it would be the carpet covering, because I HATE carpet coverings. So far this amp has worked flawlessly and I feel I got my money's worth out of it long ago. If it broke or if it was stolen I'd either buy another just like it or replace it with the MarkBass I originally went to get two years ago, or with the new GK Ultralight MB115. Still for the money it is the best buy of the three as a practice and rehearsal amp with the added bonus of the emulations. I'd say that right now I'd buy the Studio 110 again since the rehearsal capable alternatives are so much more expensive. I wouldn't gig with any of the other more expensive combo amps either, so the Studio 110 makes perfect sense as my rehearsal amp since it is just loud enough and so easy to move around.

Value:
I think this amp was a top value for my rehearsal amp dollar when I bought it two years ago and I still think it is a good value today. You'd have to spend twice as much to get anything this usable that is so small and light. Again it isn't the best amp on the market. It has limitations like probably not being the best 5-string micro-amp out there, but it also has lots of good features and with a four string bass it will keep up with a drummer in a rehearsal setting no problem. There has been a $50 price increase since I bought mine, but I'd probably buy one again today if I needed to replace the one I've got now.

Desirability:
Bass amps are supposed to be big, black and sexy with a rectangular "A" on the grill and are supposed to be so heavy that you grunt when you try to move them. Well this one is black but that is where the similarity to other bass combo amps ends. If you are used to big rigs, but are tired of moving them, then you make a compromise for something like the Line 6 Studio 110. It is about 1 square foot big and weighs about 26 pounds. Sexy? No. Visually impressive? No. But it is a practical "grab & go" rehearsal amp when space is limited or you are tired of dragging a 200 pound stack around to a rehearsal for which you get paid zilch or when packing the car for a family vacation and you want to play some while away.

Sound:
I play 4 string bass exclusively in standard E-A-D-G tuning. For a 5 string player a single 10 inch speaker is probably going to disappoint on the B string no matter what brand amp you buy. Since 1971 I've played Ampeg amps almost exclusively. With any of my 4 string basses the Studio 110 sound is adequate for rehearsals. Most bass amps of this physical one-square-foot size are a complete joke that you can't take out of the home practice environment, but the Studio 110 is different from other micro amps in the price range. Of course when people see me walk in with the Studio 110 they might think I'm a total loser, but I only use it at rehearsals when lugging the gig rig is so not necessary. One PA sound tech who came to a rehearsal said "that is a remarkable bass amp to be so small." He then asked me to turn it down so he could put some of the direct out in the main mix. The band I'm in plays mostly old school stuff with lots of Motown, Stax-Volt/Atlantic and such and oddly enough the ROCK and BRIT tones work better for me in stand-alone mode than the R&B setting! This was very surprising to me since I bought the Studio 110 precisely because the R&B setting supposedly closely emulates the Ampeg B-15. The Ampeg B-15 is the studio standard old school bass tone so you'd think I'd be using that tone to death, but I've decided that the problem there is that the B-15 has a 15 inch speaker while this tiny Line 6 amp has a 10 inch speaker. So, while the preamp is making the tone the little speaker simply can't pass it on. When using the direct out into a console with subs or decent phones the B-15 setting gets way fuller, much less mid-rangy and is in fact totally usable and very B-15 like. Previous to this rehearsal amp I used an Ampeg (USA) BA115 and a Peavey Basic 112 (the last "USA" series version with the metal grill.) This little Line 6 keeps up with a drummer at rehearsals and is less than half the size and weight of the Ampeg and is even louder than the larger and much heavier Peavey. Does it have the low of the Ampeg? No, because of the 10 inch speaker it has a definite low end limitation. If you aren't patching this thing into a mixer you are not getting the full potential out of it. There is NOT a pre-programmed button for the BRIT tone, which is one of my two favorite tones from this amp. Here is my favorite TIP about this amp: BRIT is a HIDDEN tone, read the manual and follow the directions to replace the CLEAN tone with the hidden BRIT tone and I think you'll enjoy this amp far more in stand-alone use. The CLEAN tone is nearly worthless for my style of play, but BRIT is quite usable since it has a little bite and a tube emulation edge to it which the clean tone doesn't. None of the online sites selling these amps talk about the hidden BRIT tone but it is there and it emulates a Marshall SUPERBASS fairly well. Trust me, the BRIT TONE is worth reading the amp's manual to find! Once you find the BRIT tone you'll want to keep it I think. This is not the best bass amp ever built, but for a tiny little micro amp at this price point it is a quite useful amp. If I could have only one amp, it would be a small & light combo like this. I practice at home and rehearse with the band way more than the band actually gigs and I could patch this into the PA with this thing and be just fine if I had to do so. Some people say it distorts when you turn it over about 3 O'clock. I say that ANY amp is going to start distorting when you turn it up over about 2 or 3 O'clock. I cranked a MarkBass combo and made it fart out too. As a general rule most amps are delivering most of their usable clean power at 12 o'clock and anything beyond that is frankly pushing it.

Ease of Use:
This amp does have a learning curve. Of the four factory presets you can find a usable tone and tweak it to better suit you, but beware that it takes some time to monkey around and find personally favorable tones. Once you do find them it is easy to STORE them by pressing and holding the preset button down until the light flashes twice. The amp manual is your friend. Read it. Once you learn how this amp works you'll become more comfortable with it.

Support:
I've never actually needed support, so I'm picking 5 as a middle of the road average. I've signed up on their their site and all, but that is all I've done with their support system. I'm pretty sure after the warranty runs out this amp is pretty much disposable should it break and you'd be better off buying a new one than repairing the old one. There are no "user serviceable parts" on this thing so if it is out of warranty you need someone who knows what they are doing to fix it and that ain't cheap.

Overall:
There are better small compact amps that have more power, sound truly great, look better and are way sexier. The catch is that the amps that are better cost at least 2 times to as much as 5 times more and don't have the emulation features the Studio 110 has and are actually larger and heavier to boot. The Studio 110 is different than the more expensive amps, but for an old school four string player like me this tiny amp gets the job done for practice and rehearsal. It is sort of like "BABE" the sheep herding pig in that movie from years back. Yes, it is different but it is still surprisingly OK. "That'll do pig, that'll do."