Inline Low Noise, High Gain Preamplifier
Ballurio Guitars’ preamplifier provides 30 dB voltage gain -
more than sufficient for most low impedance guitar and bass guitar
electromagnetic transducer applications.
preamplifier circuit uses filters to remove unwanted hum and high
frequency noise, ensuring a clean output signal throughout the
audio range. The
preamplifier has state-of-the-art integrated circuitry and active
filtering techniques to minimize radio frequency interference and
improve signal-to-noise ratio in the usable audio frequency range.
The active filtering
provides a useful frequency range of 16 Hz to 20 KHz.
D.C. power supply in the range of 3 to 30 volts may be used to
power the active preamplifier circuit. With 9 V battery power, the
current drain is less than 1 mA, ensuring long battery life. When
using external power supplies (non-battery) adequate filtering
should be used to ensure maximum noise immunity.
Guitars Inline Low Noise, High Gain Preamplifier
Ballurio Preamplifier is well suited for use with low impedance
transducers that produce low output signal levels. When used as an
inline amplifier, the circuit may be placed immediately after
transducer coil switching (Figure 1). The preamplifier may also be
placed in line at the alternate location between the volume and
tone circuitry and the final output stage (Figure 1).
< 1 mA @ 9 V
~ 100 mV Peak (with 9 V supply)
~ 3.3 V Peak (with 9 V supply)
~ 16 Hz to 20 kHz – 3 dB
THD at 1V 1 kHz:
> 60 dB at 1V output
Ensure that the proper connection to power supply is established.
An incorrect connection renders the component inoperable.
An incorrect connection is not covered under the terms of this