After developing the Bluedrive circuit I haven't built very many Blueverbs, but maintain this page for those considering the purchase of a used Blueverb.  If you're looking to buy or sell one please email me with information you'd like me to pass along.  I've facilitated several transactions at no charge and since all are a little different and most were custom voiced and configured, I am happy to re-voice, re-configure and update used Blueverbs at very reasonable costs.  What follows is lightly edited promotional copy from 2005.

In 2004, I set out to improve upon the classic amplifiers that Leo Fender made in the 60's. My goal was to develop a true professional-grade amplifier with the best possible tone, tremendous versatility and the highest quality construction.
Through extensive experimentation with guitar amplifier circuitry and endless critical listening I drew two fundamental conclusions. First there are two types of distortion: euphonic and dissonant or good and bad. Second when pushed gently into overdrive a tube gives up very euphonic distortion quite easily. Push it harder and it creates more and more dissonant distortion. I discovered that the secret to getting great tone is to control the gain at every stage and let each tube contribute just a little bit of euphonic distortion.

Cascading this concept over multiple tube stages results in an amplifier with smoother overdrive, greater dynamics, and clearer more vibrant tone. Applying this design philosophy to an old classic resulted in the Blueverb: the world’s first amp that gives you total control over the drive at every gain stage. This unprecedented amount of control allows you to dial in your individual sound throughout the amplifier rather than at just one point. By running each gain stage at relatively the same level of overdrive, you can tailor the overall amount of overdrive the amp delivers and still have fantastic dynamic range and sonically-rich clear tone. What this means is that when the amp is being pushed hard it will still have great definition and touch sensitivity, as well as the ability to achieve a cleaner tone by rolling off the volume knob on the guitar or by simply picking lighter.
For a dramatic example of this check out Todd Austin's Rock05 clip on my Audio page. He's playing through the second Blueverb I ever built (later owned by Tom Bukovac). All of the change in tone is a result Todd's amazing fingers. No pedal (I've been asked that a lot). No switch. No volume knob. Just picking.
BTW if you ever get a chance to see Todzilla with the Jones's you'll surely marvel over his mastery of the electric guitar.

I've also made the Blueverb's power supply circuitry stunningly fast. Fast from an engineering standpoint, dv/dt kind of stuff. No marketing fluff here. The Blueverb's speed is the result of the most sophisticated power supply in the industry. So what? When pushed into overdrive, the amp is very musical and euphonic, yet maintains its clarity. The pick attack, note separation and harmonic content of the note decay are all enhanced by this design. Several accomplished artists have also told me that they can feel the difference in their fingers. This tactile response means the amp does exactly what you want it to do when you play a note. I believe that the clarity and response of the Blueverb is unsurpassed by any other amp boutique or otherwise.
 

For those looking for the warmth and vibe of yesteryear combined with the tone and versatility of ultra-expensive boutique amplifiers, I created the Blueverb. I impreved all of Leo's best amp designs and features added a few of my own and put them into one single-channel amp.

The Blueverb is the first amp to give the artist total control over gain at every stage. With four gain controls: Volume, Drive, Pre-Master and Post-Master, you get to decide how much gain each tube provides, so you can achieve your perfect sound.

The Blueverb is more than just more knobs, the deep rich tone also comes from the circuit design and component selection. I've spent most of my life understanding what guitar players want a tube to do when it is pushed into overdrive. Specifically, which types of distortion you prefer and which kinds you really don't like.  The Blueverb is designed to provide more of the euphonic distortion and less of the dissonant distortion than any other amplifier before it (my Bluedrive is an improvement over the Blueverb). I'm not into hype, so I’ll skip the flowery terms, but you might want to give it a listen on my Audio page.

The Total-Control concept is a little different, so I’ve dedicated an entire page to explaining it. Once you understand what each knob does, you’ll find that getting your individual sound is easier than ever. Please go to the Operation page for a detailed explanation of the controls.

The Blueverb’s on-board, two-knob, tank-based reverb is also an improvement over classic on-board designs. It's more like a stand alone reverb build into the amp with a tone of dedicated circuitry, rather than the shared circuitry of the Fender reverb amps of the 60s.  Like the stand-alone Fender unit, the Dwell control lets you decide how hard to drive the tank, and the Reverb control lets adjust how much processed (post-tank) reverb to fold into your dry signal. The Blueverb has a completely-separate, all-tube, reverb-recovery stage for much greater depth, detail and quieter operation than the amps from the 60s.

I've also developed the most advanced power supply in the industry for stunning clarity, detail and response. You don’t hear much about power supplies from other manufacturers for two reasons. They’re generally not well understood and good ones are very expensive to build. The clarity, tone and tactile-response of the Blueverb owe’s much to my power supply design. This is something that is only truly appreciated when you plug into a Blueverb.

On top of all that, the amp is built to old school standards. Just like Leo Fender would have built it, with one twist. The Blueverb uses audiophile-quality, military-surplus, paper-in-oil capacitors and metal-film resistors for astonishingly clear tone and definition even at high levels of overdrive. Please see the Construction page for more details

Construction

Blueverb amplifiers are built to last. The cabinetry is all 13-ply Baltic Birch construction. The shell is precision box-jointed and glued together. No screws, nails or staples are used in the shell, just good old-fashioned wood clamps. The 16-gauge, cold-rolled, three-piece, welded-steel chassis is immersion electro-plated to prevent corrosion. The electrical components are the finest available and selected solely for their ability to deliver great tone. The resistors and capacitors are loaded onto hand-made, vulcanized-fiber, eyelet boards. The all tube amp is completely hand wired. The result is a handcrafted, artisan-quality product intended to last a lifetime.

Many consider the amplifiers built buy Leo Fender in the mid 1960s to be the zenith of amp construction quality. Their box-jointed, solid pine cabinets were nearly indestructible. The vulcanized-fiber, eyelet board was as durable as you can get and the favorite among amp techs today. The three-piece, welded-steel chassis was practically bullet proof. The stories about these amps enduring brutal punishment and still performing when their owners most needed them to abound.

1965 Fender Super Reverb

[insert picture of Super Reverb gut shot here]

The reason why amps aren't made this way today is simple. It's VERY expensive to build amps to this standard of quality today. One reason is inflation. According to the American Institute For Economic Research's cost-of-living calculator, $500 1965 dollars are worth $3098 in 2005. So if Leo had changed nothing and was making those amps today, they would be very expensive.

In an effort to make them more affordable, mass produced amps today use modern production technology. Compare the chassis photos of an amp Leo built in 1965 to the photo of the same amp as it is built today. The first thing that

2005 Fender Super Reverb

[insert picture of 2005 Super Reverb here]
you'll notice is that the hand-wired, vulcanized-fiber, eyelet board has been replaced by a printed circuit board (PCB). Amps with hand wired eyelet boards are more expensive to manufacture and sophisticated buyers snatch them up for two reasons. They are stronger than PCBs and easier to work on. Just ask your amp tech. He'll tell you.

Blueverb chassis

[insert picture of Blueverb here]

Leo got it right a very long time ago and the continuing road-worthiness of amps built forty years ago are testimony to superiority of that design: three piece welded steel chassis; hand-wired Vulcanex eyelet board; and Box joint for the cabinets.  Blueverbs are built to the same standards as these legendary amps with a few improvements: paper-in-oil signal capacitors for greater clarity; metal-film resistors for quieter operation; and no-void, Baltic-birch plywood because it's stronger and sounds better. From a construction/durability standpoint everything else is the same as Leo made his amps.  These are the toughest amps on the market. No kidding. "You can pay a lot more, but you can't buy a better amp."
 

Configuration

Another feature of the Blueverb is that you could have one custom built to suit you perfectly, for no extra charge. I've built Blueverbs as small as a 2x6V6 25 watt 1x12 combo amp all the way up to a separate 2x6L6 50 watt head with a slant 4x12 cab. I can reconfigure any used Blueverb yo may acquire to suit your playing needs.

Each Blueverb was custom built one at a time, start to finish to fit each customer's style and preferences. Although every amp has the same range of versatility, I carefully determined the sonic center of the amplifier’s voice to meet each customer's individual needs as a player. I did this by selecting the precise value of over forty components based upon a detailed understanding of each customer's tonal requirements. During the configuration stage I worked very closely with my customer's to determine what kind of tone they were seeking.

Even if they very little about guitar amplifiers I could still determine what would work best for them. I asked a lot of questions so that I understand exactly what tone they want from their Blueverb.  I often listened to a CD that they sent me with specific tones so I knew that we were talking about the same things. In this respect you can think of me as a tone tailor that takes the full measure.

Update: With the introduction of the Bluedrive, I've obsoleted my custom amp building business.  It is so versatile that there is really no need for custom voicing.  For everything from fat tubey cleans to rich, round and responsive mid-gain tones I can find no way to improve the sonics of a guitar preamplifier.  

There were several Blueverb configuration options for customers to choose from:
Output tubes: (6V6, 6L6, EL34, KT77)
Output transformer: (Bandmaster Reverb, Bassman, Super Reverb, Twin Reverb)
Voicing: (Super Clean, Clean, Standard, Overdrive, Super Overdrive and Tone Cloning)
Cabinet configuration: 1x12; 1x15; 2x10; 2x12; 4x10; 4x12; Heads; Combos and Cabs

How I did pricing was a little different but it gave me a lot more flexibility in building an amp that met my customer's requirements. The main component of all Blueverb configurations was the chassis. It included all of the electronics less the output transformer. It also included the Reverb/Vibrato footswitch and the Reverb tank and cables. It was the selection of components in the chassis that determined the voicing of the amplifier. I then added the output transformer, cabinetry and speakers to configure a Blueverb that was just right for each customer.

I also did five different amplifier voicings. Super Clean, Clean, Standard, Overdrive and Super Overdrive. All amps did Clean and Overdrive and had the same amount of gain. Clean amps did clean better than the Overdrive and vice versa. The Super Clean had much more deep low end and high-end sparkle compared to the Super Overdrive which had much smoother overdrive. I worked together with each cutomer to decide which voicing best fit their playing style.

All of the Blueverbs shared a common chassis, so unlike Fender, where the Deluxe Reverb is smaller than, say, the Super Reverb, there is no difference in chassis size for different wattage Blueverbs. The only difference in weight is due to the different size output transformers cabinetry and speakers. This means that I can easily modify an amp originally purchased as a '25' to a '50' by simply changing the output transformer. This is because all Blueverbs have the same power supply capable of delivering well over 50 watts.