• Account
  • View Shopping Cart

Menu Search View Shopping Cart Call Us

Dr. Z Therapy 35W Amp Head - Used  From Dr. Z

Tweed-era clean with a Dumble-esque saturated edge! Grillcloth front upgrade!


Buy Pre-owned from Sound Pure with Absolute Confidence

Sound Pure's dedication to pre-owned products is unprecedented in the industry. We are a small team of dedicated experts that buys, trades, and consigns. We are trusted by customers all over the world. Our curated collection, is thoroughly tested and inspected by some of the best in the business. Our inventory is constantly changing, ever-evolving, with some items sold before reaching the website. Looking for something specific? Have questions about this product's condition or history? Want more photos, or to simply chat with an expert who's had his hands on this actual piece? Contact us now.
Our Current Used/Vintage Collection »

Sound Pure's Consignment Program »

Luthier Certification for Used Instruments »

Dr. Z Amplification

"Gone, Baby, Gone"

This one is sold. Don't miss the next one. Some things never even make it to the site so stay up to date on our used collection.

We get in many oddities, rare and vintage products, most of which go fast. If you're on the hunt for something specific, something unique, or something priced right, let us notify you on our used collection before the items even hit the site.

Want to know if one lands?

Notify Me

Want to discuss what's coming?

What We Think

Condition: Used, Excellent

The Dr. Z Therapy is an aptly named success of an amp far off the beaten path from The Doctor's previous releases. With a clean slate and fresh perspective, the Dr. and gang tackled a whole new sound filled with bliss-inducing cleans, euphoric driven tones and rich harmonic content that's borderline theraputic - hence the final name, The Therapy. The finished product is an extremely versatile do-all amp with enough gain on tap to go from sparkling clean to Tweed-y growl to Overdrive Special style saturation. Super touch dynamic and sensitive, the Therapy responds beautifully to your picking nuances and makes sure every time you dig into a string - it responds accordingly. The bass response is booming, filling out the tonal spectrum nicely with the Therapy's thick midrange and warm open high-end. The Post Phase Inverter Master Volume enables you to keep those incredible tones at all volumes, making sure you lose no shimmer or sparkle on the high end at lower bedroom volumes.

The Dr. Z Therapy is an amp we expect to be successful not only now but in the many years to come. Atypical of anything Dr. Z has done before, this amp showcases the brilliance behind the scenes at the Z headquarters. 

Manufacturer's Description from Dr. Z

The Therapy is a departure from what Dr Z Amps has done in the past. We started with a clean sheet of paper and a fresh sonic perspective. The result is a cathode biased 6L6 based amp with a flavor of a low powered tweed Twin. It has a range of tones that will appeal to a wide audience and it includes a special design post phase inverter master volume which does not lose top-end definition at bedroom settings. Its output is a cool 35 watts with a tube rectified power supply.

Under the hood you'll find the highest quality components throughout. Special attention was used to select the coupling caps. We chose Jupiter hi end hand rolled coupling caps for the banana yellow Astron tone found in early Fender tweed amps. A high precision PEC sealed volume pot is used for unmatched sensitivity, control, and long life. The large output transformer gives more thrust than you can get from a 20 watt amp.
The Therapy has a woody bass response that fills out nicely. Think tweed-like clean with a modern clarity. We incorporated our unique 2 preamp tube front end that we have mastered in designs from our past. The more American-type overdrive sounds are smooth and harmonically rich while allowing great sustain and clarity. Because the Therapy doesn't use a cascaded front end you also get great clarity from pedals even at the highest drive settings. This simple design coupled with special EQ wiring maximizes gain, touch dynamics, and guarantees stable frequency response across the dial.

The PPIMV helps keep the sound level in check whether you are in church or in an arena. In this circuit the master is very effective with better results than you would get from many attenuators. All in all the Therapy is a great choice for a modern spin on a 6L6 design. It has great cleans for the roots players and plenty of drive for the rockers.

Dr. Z Amplification


Power Output: 35 watts

Output Tubes: 2 - 6L6 STR

Preamp Tubes: 2 - 12AX7

Rectifier: 5AR4

Controls: Volume, Treble, Mid, Bass, Master

Configurations: Head

Colors: Black

Dimensions & Weight: 19” W x 9 ¾" H x 9 ½" D, 30 lbs.

Recommended Accessories