Dr. Z has wanted to add a pedal to its product line for some time. The goal was to release a killer overdrive that adheres to the brand’s quality, craftsmanship and tone. EarthQuaker Devices is just a stone’s throw away from Dr. Z, so the company enlisted the talents of Jamie Stillman to create the new Z-Drive overdrive pedal.
The Z-Drive starts with an active global EQ and offers a choice between two distinct-sounding preamp channels (via the channel footswitch). The Germanium channel uses NOS germanium diodes and is a lighter- more open-sounding overdrive. The Mosfet channel is a more compressed, higher-gain overdrive. Both gain stages use hi-ﬁ OPA 2134 op amps. Because the signal goes through the EQ ﬁrst, turning the EQ controls clockwise can increase overall gain/distortion.
The Z-Drive is essentially two pedals in one. You can use one channel as a cleaner boost and the second channel for full overdrive, or dial in overdrive sounds to bring out the different characteristics of each channel. Between the two channels and the full EQ, the Z-Drive will open up a world of possibilities while complementing an amp’s tone.
Germanium channel: drive, level and cut switch.
Mosfet channel: drive, level and cut switch.
Global EQ: Bass, middle, treble
Channel and Bypass footswitches.
Power: 9 volt DC power supply with a 2.1mm negative center barrel or 9 volt battery. Dr. Z recommends pedal-speciﬁc, transformer-isolated wall-wart power supplies. Pedals will make extra noise if there is ripple or unclean power. Switching-type power supplies, daisy-chains and non-pedal speciﬁc power supplies do not ﬁlter dirty power as well and let through unwanted noise. Do not run at higher voltages.
Current draw is 30 mA.
Dimension & Weight 1 5⁄16” H x 4 11⁄16“ W x 3 11⁄16” D, one pound.
For more information, visit Dr. Z Amplification.