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COPPERSTONE

COPPERSTONE

Interchangeable 3 Band Bass Guitar Preamp

interchangeable 3 Band Bass Guitar Preamp

 
INTERCHANGEABLE
Replace your COPPERSTONE preamp without soldering for another one with different sound caracteristics.
 
GAIN CONTROL
Get always the powerful sound you need. Up to +9dB gain boost.
 
3 SELECTABLE FREQUENCIES
Up to 3 different mid tone frequencies to play with.
 
ENERGY EFFICIENT
COPPERSTONE runs longer than most preamps on a single 9v battery.
 
COMPACT DESIGN
COPPERSTONE reduced dimensions makes it one of the smallest preamps available today.

 
CONFIGURABLE
Order the custom COPPERSTONE that better matches your desired tone.
 
FOR ACTIVE & PASSIVE PICKUPS
COPPERSTONE is compatible with the majority of the active and passive pickups available on the market.

 
EASY INSTALLATION
Install your prewired COPPERSTONE mostly without soldering.
 
BATTERY MONITOR
The optional FLAME module will let you know when to replace the battery when it gets low.

COPPERSTONE 2 versions

JERZY DROZD COPPERSTONE

Lite
- additional modules are available
- interchangeable 3 band bass guitar preamp
- no soldering is necessary
- with the same sound specifications
- additional modules are available
- the solderable version of COPPERSTONE
COPPERSTONE
COPPERSTONE
is available in 2 versions

Order your Copperstone LITE - 165€

Order your Copperstone LITE - 165€

Order your Copperstone LITE - 165€

Order your interchangeable Copperstone - 295€

Order your interchangeable Copperstone - 295€

Order your interchangeable Copperstone - 295€

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COPPERSTONE Lite

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

Order your Copperstone Lite - 165€

Order your Copperstone Lite - 165€

Order your Copperstone Lite - 165€

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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.

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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.

Beautifully crafted, smartly engineered
Beautifully crafted, smartly engineered

COPPERSTONE can be configured with 3 different mid frequency variations:

- single fixed frequency eg.: 350Hz
- two switchable frequencies eg.: 350Hz/700Hz using 2 way toggle switch
- tree switchable frequencies eg.: 350Hz/700Hz/900Hz using 3 way toggle switch

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

Up to 3 Different switchable medium frequencies
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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.

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

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

Small

Small

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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.

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Via a 30 pin connector, one united wire harness connects every component to the COPPERSTONE´s baseboard, making the installation or replacement of the wire harness and the baseboard fast and easy.

The solderless version allows connecting the entire system without soldering. The pickups are connected via terminal blocks on blend potentiometer module. The output jack is connected with push-on terminals.
The soldered version pickups blend module does not have solderless block terminals and the output jack does not have solderless push-on terminals, so soldering is necessary. All the other elements, like potentiometers, selector and battery clip are prewired in both cases.

Solderless and soldered version

COPPERSTONE Wire Harness
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COPPERSTONE connects to the baseboard through two 12 pin inline connectors. The additional trim potentiometer, located on the right upper corner of the baseboard, allows for up to 9dB gain adjustment.

The COPPERSTONE´s baseboard is an important piece of the COPPERSTONE system. The baseboard allows fast and easy replacement of the preamp. Due to its reduced dimensions (24mm x33mm), the baseboard fits inside the majority of the bass guitar's electronics cavities. The baseboard can be installed at the bottom or on the wall of the electronics cavity using double stick tape.

COPPERSTONE Baseboard
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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.

Energy Efficient & Environmentally friendly

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

Optional Expansion Module
Technical Details
Dimensions & Weight
Controls
COPPERSTONE Specifications
 
 
 
 
 

30 Days Money Back Guarantee

2 Year Warranty

Try COPPERSTONE 30 days. If you are not 100% satisfied we will refund 100% of the purchase price.

Enjoy 2 years of hassle-free guarantee included with every JERZY DROZD electronic product

COPPERSTONE Warranty