JERZY DROZD COPPERSTONE

Available exclusively on JERZY DROZD Instruments

Available exclusively on JERZY DROZD Instruments

COPPERSTONE Lite

COPPERSTONE Lite is the solderable version of our COPPERSTONE 3 band bass guitar preamp. Its installation requires basic soldering skills.

JERZY DROZD COPPERSTONE

Free your Tone

COPPERSTONE interchangeable 3 Band Bass Guitar Preamp frees your instrument from being attached to one tone. Now, if your tone needs to change, you can replace your COPPERSTONE at will.

COPPERSTONE is a beautifully crafted, compact and replaceable 3 band bass guitar preamp, designed
by Jerzy Drozd and manufactured in THE CASTLE.

COPPERSTONE is the preamp installed on all JERZY DROZD creations equipped with active electronics
Now it is available to be installed in any bass guitar regardless of its manufacturer.

COPPERSTONE, smartly engineered into a small footprint, is easy to install
into the bass guitar of your choice.

Besides its exclusive characteristic, interchangeability, this 3 band bass guitar preamp delivers
up to 9dB gain boost and can be configured with up to 3 different midrange selectable frequencies,
passive tone and active/passive mode among others.

COPPERSTONE produces a powerful tone with warm lows. Its 3 midrange selectable frequencies
provide different usable medium tone variations, while the treble control serves a crisp and clear sound.

COPPERSTONE is beautifully crafted compact replaceable 3 band bass guitar preamp designed by Jerzy Drozd
and manufactured in THE CASTLE. This is the same bass guitar preamp we do install in all JERZY DROZD creations
equiped with active electronics. COPPERSTONE smartly enginered into small footprint makes it possible for easy install
without soldering into bass guitar of your choice.

Besides it´s unique caracteristic - interchangeability, this 3 band bass guitar preamp can deliver up to 9dB gain boost
and can be configured with up to 3 different mid range selectable frequencies, passive tone and active/passive mode among others..

COPPERSTONE produce powerful tone with warm lows, while 3 midrange selectable frequencies will allow you to have many
different usable medium tone variations while treble control serve crisp and clear tone.

COPPERSTONE can be expanded with our electronic modules like FLAME, QUARZ and MIDI to bring even more sound posibilities
to your JERZY DROZD creation or any other bass guitar of your choice.

COPPERSTONE can be configured with 3 different mid frequency variations:

- single fixed frequency eg.: 250Hz
- two switchable frequencies eg.: 250Hz/400Hz using 2 way toggle switch
- tree switchable frequencies eg.: 250Hz/400Hz/1000Hz using 3 way toggle switch

More over, besides the standard frequencies available for COPPERSTONE, upon your order you can configure
your custom COPPERSTONE preamp with different frequencies to suits your needs.

In its basic setup, COPPERSTONE is adjusted as a unity gain device, where the input signal remains
the same as the output signal. This means that the active and passive signals will remain the same
when the EQ is set flat on all the three bands. However, it is possible to boost the gain of COPPERSTONE
up to +9dB if necessary, especially if the signal of the pickup is not enough to drive the first stage of amplification.

COPPERSTONE is one of the smallest bass guitar preamps available today.

COPPERSTONE is one of the smallest bass guitar preamps available today.

Small

Small

For active or passive pickups

COPPERSTONE interchangeable 3 band bass guitar preamp can be installed on any bass guitar equipped with active or passive pickups.

COPPERSTONE operates on current as low as 0,84mA, which represents almost half of current consumed by other commercially available bass guitar preamps. The minimum voltage necessary to power COPPERSTONE is 3.8V, very low compared to the minimum of 5v or even 7v for other similar devices.
While a battery with a voltage of 5V would be considered "dead" for other preamps, COPPERSTONE is capable to squeeze it down to 3.8 volts with an impressive 70% performance. These factors, among others, make this unique bass preamp to stand out in terms of energy efficiency, which translates in less battery consumption, less vaste and, lastly in a lower operational cost.

FLAME
Flame is a discrete electronic device. This litlle module monitors your battery
status and will flash when battery drops its voltage below the desired level

- Long: 28mm
- Wide: 18mm
- High: 8.3mm
- Weight: 9.7g
- Cover plate: Phosphor bronze
- Connection: 24 pins

- Active/Passive Mode Selector (optional)
- Mid Freq. 2 or 3 way Toggle Switch (optional)
- Passive Tone (optional)

- Master Volume
- Pickups Blend
- Treble
- Mid
- Bass

Frequency response:
- Bass: +/- 16dB @ 40Hz
- Midrange: +/- 15 dB @ Up to 3 selectable frequencies (standard 250/400/1000Hz)
- Treble: +/- 15dB @ 6.0 KHz
- Gain adjustment: 0dB to +9dB
- Frequency range: 8 Hz - 20 KHz
- Input Impedance: 500kOhm
- Output Impedance: 100 Ohm
- Power consumption: 840uA
- Operating voltage: maximum 18v down to 3.5V , one or two 9v alcaline batteries
- Single 9v battery life: Estimated at more than 600 hours