4 Band EQ with Stacked Knobs:

Volume/Balance stack, HighMid/LowMid stack, Treble/Bass stack

Look for our other eBay listing if you prefer Volume/Volume.

The Pro JZ provides:

• High level of touch responsiveness
• Enhanced active pickup mixing, gives you a broader sound range
• Flexible tone control with 4 bands of Tone Control
• Broader frequency range response
• Higher definition and clarity of sound

Features of the Pro JZ (Jack on Plate) model:

• Installs quickly with no soldering
• Made for Fender jazz basses with the output jack on the plate
• Enriches the organic sound of passive pickups.
• LED Battery Monitor, tells you before you play if your battery is getting weak.
• JZ preamps can not be used with active pickups. Most active basses have passive pickups.

What’s Included:

• Chrome plate and knobs
• On plate LED battery monitor; flashes to show battery strength when cable is initially inserted. See 4th photo.
• On plate, Z-Mode switch for three bass voices (more info below) Ships with shorter bat than shown.
• Z-mode programming switch (used during installation)
• Battery supplied with U.S. shipments.

Check out this link to the Bass Player review on the original JZ release.

• Jonathan Herrera installs a JZ into his '75 Fender Jazz and gives his opinion on the sound and features, "seriously groovy".
• Since then we've added a temporary switch (shown in photo) that allows the player to tailor the Z-Mode settings if desired.

What is Z-Mode?

Z-Mode is a 3 position toggle switch on the plate that delivers three organic bass voices with clarity and definition—giving you more control, range, and musicality while retaining the passive sound you love. You can’t get this level of definition, responsiveness, and range with any other preamp on the market.

• Mid Z-Mode (center position) – this is the sound of your passive bass. You will not lose your passive sound - you will gain more touch responsiveness and better pickup mixing. Typically players spend the majority of their time in this mode.
• High Z-Mode (toward the bridge) – this is a bright, aggressive sound. This mode is often used for slap playing.
• Low Z-Mode (toward the neck) – this is a deeper, focused response. The unique aspect of this mode is it features very good note timing location and is never muddy. Lots of bass players have been looking for this sound and attempt to get it with tone controls on other preamps without success.
• During installation, a temporary programming switch on the board allows you to select from a set of Z-Mode configurations.

Ships direct from our factory in Oregon.

Please note: Ships USPS.