Fender Classic 4T Acoustic Preamp Black (By Fishman)

Fender Classic 4T Acoustic Preamp Black

Used for many years on multiple Fender acoustic guitars and basses. They are hard to find if yours is on the fritz and you need a replacement.

Features:

TUNER Depress the TUNER button to turn the circuit on and off. When the tuner is on, the output is muted. For your convenience you may turn on the tuner when the instrument is unplugged. Note: The tuner devours battery power, so remember turn it off when you finish tuning.

BATT: (Battery Indicator) When you plug in the guitar the BATT indicator will flash momentarily. The flash tells you power is on. When the BATT indicator stays on, it is time to change the battery.

VOLUME: For the cleanest signal, set the VOLUME slider as high as possible, without causing distortion to your amp or mixer.

BASS: Boost here to add depth and weight to the sound of the guitar.

MIDDLE: Move the MIDDLE slightly below the center detent to add roundness to the bass and clarity to the treble. Put the MIDDLE slider all the way down for a smooth “scooped out” tone at high volume levels. Raise the MIDDLE slider slightly above the center detent to add midrange “bite” to the sound.

TREBLE: A boost here will help to “cut through the mix”. Conversely, cutting TREBLE will mellow and subdue your amplified tone.

BRILLIANCE: This slider can add shimmer and sparkle to your sound. It zeros in on “extra crispy” high frequency tones, the realm of harmonics and acoustic string sound. Lower the BRILLIANCE slider to reduce finger noise and fret buzz.

Specifications:
Output Impedance Less than 3.5kOhm
Nominal Output Level -6dBV THD Less than .04%, -18dBV input
Signal to Noise Ratio 82dB (A weighted, @ nominal –18dBV input) Current Drain:  
(preamp) 1.9mA (est 300 hrs continuous)
(preamp & tuner, no signal) 4.2mA (est 135 hrs continuous)
(preamp & tuner w/signal) 21.3mA (est 27 hrs continuous)
Power supply 9V alkaline battery
Low Battery Indicator Threshold: below 6V
Bass Control ± 10dB at 60Hz
Middle Control ± 10dB at 700Hz
Treble Control ± 10dB at 10kHz
Brilliance Control ± 8dB at 10kHz
Tuner Calibration A = 440 Hz

All specifications are subject to change without notice