Feature:
An AC adapter comes with it, but it is not a 9 volt, and requires a separate plug.

Quality:
The metal case is very sturdy,as are the footswitches. It uses some small "tubes" to create the distortion, and as we all know tubes wear out. I had mine for several years without ANY problems...,then it started to have "noisy tube syndrome".

Value:
This pedal is expensive, but the effect you get makes it a bargain. Now, it lists for over $225, but I got it at guitar show several years ago for $180. That still is less than a lot of the "boutique" distortions on the market. If you can try one out,do so. I know I love mine!

Desirability:
It is not a sexy pedal, it is a functional one.When I had it serviced, I tried other pedals, but none even came close.

Sound:
I've been playing for 30 years, trying to find "the perfect tone". This pedal comes as close as I've ever gotten...I set channel one for a milder distortion and set channel two for as much as I need for the lead tone. I love the individual gain and volume controls for each channel.I play a PRS CE and a mex Strat through it, The guitars require individual adjustments, but it performs well with both!

Ease of Use:
This pedal is very intuitive, and is easy to adjust "on the fly". The "chicken head" knobs are a good feature, you can see at a glance how much distortion you have dialed in.

Support:
Since I'd had the pedal for several years, I thought the warranty had expired. I took it to a great local amp/effect repair shop and told them I thought it was the "tubes". The shop told me that they couldn't find the parts, so they were going to contact Seymour Duncan to find them. Seymour Duncan said it was still under warranty, and fixed it for FREE!! I am VERY impressed with their service, it sounds like new!

Overall:
This pedal is wonderful,I'll always have it on my pedal board. I would like to find one that didn't rely on "tubes", but that is a pipe dream because NOTHING ELSE sounds like natural tube distortion.

Feature:
The two channels alone make it worth the money!

Quality:
Looks very sturdy but I haven't had it long. I don't expect to have any problems though.

Value:
This thing would fly off the shelves at the $169 price point. I just couldn't wait for the prices to come down on this one though. I spent alot of time thinking and reading before I actually took the jump. At $169 it would have been a no brainer. I still think it was worth the money but it is hard on the pocket...

Desirability:
It is a very nice looking pedal. It's got a nice rock and roll look to it.

Sound:
I bought this to replace the borrowed Butler Real Tube pedal I had to give back. I use a Crate PowerBlock for a head and use my gear to adjust the input. This gives me a more consistent sound when I need to plug into another cabinet. This setup also allows me to carry my rig in a duffle bag if I need to. Anyway, this pedal gives me two channels which the PowerBlock lacks but I like that my two channels are coming from the same source making for a more consistent sound. And the difference between this preamp and just the amp are worlds apart. I could not get this sound on the PowerBlock even if you gave me a week with it. The Twin Tube ranges from warm to hot and I love the sound. I read alot of reviews ranting and raving about it and when I tried it out I was blown away! This is a MUST BUY for those of you who like that tube sound but can't afford to shell out hundreds of dollars!

Overall:
So far so good. It's made it into my permanent rotation as far as effects goes. In fact, I don't really consider it an effect. For me, it's a critical component of my amp.

Overall:
Used this on a couple of Broadway sessions in NYC and the other guitarist promptly went and ordered one as did the sound engineer. Like all pedals you need to play around to get the best out of in within your rig. Along with my Rivera amp and a tube screamer this pedal gives me plenty to play with. Highly recommended!

Feature:
two channels of tube preamp distortion, high and low eq, volume and gain, bypass. Has everything I need.

Quality:
The case is strong and the buttons work. Sometimes the drive select button makes a click that carries through to the amp. It's not really noticable but it bugs me.

Value:
Could be a little cheaper but after trying literally every distortion pedal this was the one I liked best and fond it worth while to pay to get the best. I love the tube sound.

Desirability:
Mmm... ugly 70's brown. The pedal is large and not the most attractive but I don't care so I give it a 10.

Sound:
I play this pedal through my 72' Masrhall superbass amp. I leave the amp clean and use the pedal to get two channels of drive. I like the sound of each drive and can get a bunch of sounds. I don't konw if it's the pedal or my amp but there's not a lot of feedback - even if I crank the gain and put my guitar right in front of the cab. I had to put a compressor just before this pedal for the times I want the play and feeback from my amp. Overall I like the sound.

Ease of Use:
Very easy to use, my one gripe is that the chicken-head knobs move too easily. I've accidently bumped the volume with my foot and every time I hopen my pedal board the knobs have rotated.

Support:
Haven't needed it.