Zendrive 2


MADE AND SIGNED BY Alfonso Hermida

Very Small Batch Build

Hermida audio technology zendrive 2 TUNG-SOL 12AX7

Between November of 2014 and March of 2015 Alfonso Hermida built a small batch of these incredible units. They are ready to ship and very rare! We only have this one small batch of units Alfonso built by hand available. We have a NO return, NO cancel policy on these particular units because of the time involved to produce them.

Original Handmade Zendrive with a dual triode preamp tube inside. The tube is installed in a socket and can be replaced with other preamp tubes. Different tubes can change the voicing and gain of the pedal in different ways.

The Zendrive 2 comes with a TUNG-SOL 12AX7 tube but can also use 12AT7, 7025, 5751.

Why did I choose the Tung-Sol 12AX7 as the ZD2 tube?
by Alfonso Hermida

I’ve been asked that question many times. When I designed the Zendrive 2 I went through literally about 50 or 60 tubes in my collection both NOS and new commercial types. Any dual triode with the same pin configuration as a 12AX7 was tested. Loved the sound of the NOS 12AX7…but at the current prices…not feasible. I decided to install a socket permanently on the pedal so the customer could replace the tube and experiment.

After accepting the fact that I would supply the pedal with a commercial tube I ended selecting the Groove Tubes GT-12AX7-M and the Tung-Sol (in that order). From that point on I installed the GT-12AX7-M tube on all Zendrive 2 pedals. With time I noticed that for some reason the newer GT-12AX7-M tubes were not performing as well as the older ones so I decided to stop using them completely and decided to focus on the Tung-Sol 12AX7. I quickly noticed that it was a very consistent and great sounding tube. As it breaks in the pedal’s tone gets better and better.

Some customers do experiment with NOS and commercially available tubes since its easy to change and test them in the pedal. They also ask me what would I recommend. I tell them that I’ve already done the homework for them and my choice is the Tung-Sol 12AX7. Keep playing the pedal, let the tube break in and enjoy.


This pedal also comes with a free 9V DC, 200mA adapter since it does not operate with a battery.


Smooth, round, balanced, low-to-medium gain TUBE overdrive TUNG-SOL 12AX7

Slight overdrive to mild distortion

Great dynamic response and open sound

Connectors: Input, Output, DC adapter

Power Supply: DC adapter ONLY (supplied)

Dimensions:  4.7″ x 3.7″ x 1.18″

“The Zendrive is one of the most elegant sounding overdrives I’ve ever heard…. Whether you’re seeking a glass-smooth overdrive with flawless string-to-string clarity or a clean booster/sweetener for a medium-wattage combo, your search is over.” —Darrin Fox, Guitar Player Magazine

“I tried it out and fell in love with it.” —Robben Ford

“Really smooth and musical with a nice harmonic factor. It seems to adapt really well to different amps…” —Sonny Landreth

“One of the best sounding kind of overdrive pedals I’ve ever heard… fabulous.” —Vince Gill

“You really won’t find a smoother overdrive that expands your tone so effortlessly.” —Adam Moore, Guitar Player